ADC Network Card UTU 701C User Manual

7. Unstructured Mode Application....................................................................................................................16

8. Loopback Operations....................................................................................................................................19

9. Installing the UTU-701C Line Uni t..............................................................................................................23

10. UTU/ETU Console Port and Maintenance Terminal Connector Pinouts.....................................................25

11. Connecting a Maintenance Terminal to a Line Unit.....................................................................................26

12. Logon Password Scree n................................................................................................................................27

13. Console Screen Menu Bar.............................................................................................................................27

14. Console Screen Menu Structure....................................................................................................................28

15. Items in Console Screen Status Ba r..............................................................................................................30

16. Console Screen Config Menu .......................................................................................................................32

17. Config Terminal Settings Menu....................................................................................................................33

18. Config Date and Time Menu ........................................................................................................................34

19. Config Change Password Menu....................................................................................................................35

20. Config Circuit ID Menu................................................................................................................................36

21. Config System Settings Menu.......................................................................................................................37

22. Config LTU Interface Menu with Unstructured Mode Data Rate................................................................39

23. Config NTU Interface Menu with Structured Mode Data Rate....................................................................39

24. Config Alarms Menu ....................................................................................................................................41

25. Config Alarms LTU Interface Menu ............................................................................................................42

26. Config Alarms NTU Interface Menu............................................................................................................42

27. Config Alarms HDSL Span 1 Menu.............................................................................................................43

28. Set to Factory Defaults Screen......................................................................................................................44

29. Main Console Screen ....................................................................................................................................46

30. Monitor Menu ...............................................................................................................................................48

31. Monitor LTU Interface Screen......................................................................................................................49

32. Monitor NTU Interface Screen .....................................................................................................................50

33. Monitor HDSL Span 1 Screen ......................................................................................................................51

34. History Menu ................................................................................................................................................52

35. History LTU Interface Menu ........................................................................................................................53

36. History NTU Interface Menu........................................................................................................................53

ETU-701C and ETU-751C List 1

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List of Figures

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37. LTU Interface Alarm History Screen........................................................................................................... 54

38. History HDSL Span 1 Menu ........................................................................................................................ 55

39. 24 Hour History Screen for HDSL Span 1................................................................................................... 55

40. 7 Day History Status Screen for HDSL Span 1............................................................................................ 56

41. Alarm History Status Screen for HDSL Span 1........................................................................................... 57

42. Inventory Screen........................................................................................................................................... 58

43. Test Menu Screen......................................................................................................................................... 60

44. ETSI Firmware Download Utility Menu...................................................................................................... 62

45. ECA-800 DB25M to M34F (V.35) Connector Adapter, Part Number 150-1470-01 .................................. 65

46. ECA-801 D25M to DB15F (X.21) Connector Adapter, Part Number 150-1470-0 1................................... 66

47. ECA-802 DB9M to RJ-45 Connector Adapter, Part Number 150-1472-01 ................................................ 67

48. ECA-804 DB9M to Four-Position Terminal Block Connector Adapter, Part Number 150-1474-01 ......... 68

viii

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List of Tables

LIST OF TABLES

1. Rate Selectable G.703 Unit Characteristics....................................................................................................2

2. Transmission Ranges with 0 db ETSI Noise ..................................................................................................3

3. Line and Desktop Unit Front Panel Components ...........................................................................................5

4. Line and Desktop Unit Front Panel LED Indications.....................................................................................6

5. ETU-751C Desktop Unit Rear-Panel Components ........................................................................................7

6. WorldDSL Product Compatibility ..................................................................................................................8

7. Typical Structured Mode System Settings....................................................................................................15

8. Typical Unstructured Mode System Settings................................................................................................16

9. Examples of Selected and Actual HDSL Payload Rates ..............................................................................17

10. Monitored HDSL Transmission and Interface Performance Parameters......................................................18

11. HDSL Transmission and Application Interface Alarms...............................................................................19

12. Loopbacks Selected at Front Panel Pushbuttons and Console Screens ........................................................20

13. Loopback Equivalents...................................................................................................................................21

14. Console Screen Menus..................................................................................................................................29

15. Console Screen Status Bar Display s.............................................................................................................30

16. Console Screen Navigation Keys..................................................................................................................31

17. Config Menu Options and Recommended Order of System Configuration.................................................32

18. Fields and Options Displayed in Config System Settings Menu..................................................................38

19. Fields and Options in Displayed Config LTU and Config NTU Interface Menus.......................................40

20. Fields Displayed in Config Alarms LTU and Config Alarms NTU Interface Menus..................................43

21. Fields Displayed in Config Alarms HDSL Span 1 Menu.............................................................................44

22. Factory Default System Settings...................................................................................................................45

23. Reading the Main Console Screen................................................................................................................46

24. Fields Displayed in Main Console Screen....................................................................................................47

25. Fields Displayed in Monitor LTU and Monitor NTU Interface Screens......................................................49

26. Fields in Monitor HDSL Span 1 Screen .......................................................................................................51

27. LTU Interface and NTU Interface Alarm History Data................................................................................54

28. HDSL Span Alarm History Data ..................................................................................................................57

29. Inventory Screen Data...................................................................................................................................59

30. Test Menu Options........................................................................................................................................61

31. BER Section of Test Menu ...........................................................................................................................61

32. ETSI Firmware User Selectable Download Menu Options..........................................................................63

33. Navigating the ETSI Firmware Download Menu.........................................................................................63

34. D9F HDSL Line Connector Pinouts.............................................................................................................64

35. D25F Data Port Connector Pinouts...............................................................................................................64

36. ECA-800 DB25M to M34F (V.35) Connector Adapter Pinouts ..................................................................65

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List of Tables

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37. ECA-801 DB25M to DB15F (X.21) Connector Adapter Pinouts................................................................ 66

38. ECA-802 DB9M to RJ-45 Connector Adapter Pinouts ............................................................................... 67

39. ECA-804 DB9M to Four-Position Terminal Block Connector Adapter Pinouts......................................... 68

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Overview

OVERVIEW

ADC^®WorldDSL^™offers High-bit-rate Digital Subscriber Line (HDSL) Line Termination Units (LTUs),

Network Termination Units (NTUs), Universal Termination Units (UTUs), and ETSI Termination Units (ETUs).

The units are shelf and enclosure mounted, providing full-duplex transmission of up to 2.048 Mbps data over

one or two twisted pairs of copper wire. Public carriers and private network providers can use these units to offer

low-cost service with fiber-optic quality using the local copper loop without installing repeaters or conditioning

the outside plant. The units are used in systems that comply with European Telecommunication Standards Institute

(ETSI) specification TS 101 135.

This practice describes the WorldDSL RS UTU-701C List 1 and ETU-751C List 1 Rate Selectable HDSL line and

desktop units. The terms for these units are defined as follows:

•

LTU and NTU are defined by ETSI to distinguish between the two units in an HDSL system. An LTU is

generally located at the Exchange Office end of the circuit and acts as the master unit. The NTU is located at

the customer site and acts as the slave unit.

•

UTU is defined by ADC. These are programmable HDSL line units that can be configured as an

LTU (master) or an NTU (slave). The UTU default configuration is NTU (slave). The UTUs do not provide

line power to other HDSL units. All other aspects of UTU functionality are identical to LTUs or NTUs. The

UTU-701C has a G.703 interface and must be locally powered from a -36 Vdc to -72 Vdc power supply.

•

ETU is defined by ADC. These are programmable HDSL line units housed in plastic enclosures with interface

and power connectors for convenient use as integrated desktop units. The ETUs can be configured as an LTU

or an NTU. The ETU default configuration is NTU. The ETU-751C does not provide or receive line power;

it must be locally powered. All other aspects of ETU functionality are identical to LTUs or NTUs. The

ETU-751C has a G.703 interface and contains a power supply that accepts 100 to 240 volt, 50 or 60 Hz,

AC power.

WorldDSL RS (rate selectable) is defined by ADC. WorldDSL RS is a single pair High-bit-rate Digital

Subscriber Line (HDSL) solution that offers extended reach capabilities through the use of industry-leading

multi-rate DSL technology. The UTU-701C and ETU-751C deploy HDSL in networks using a single pair of

copper wire running at speeds between 256 kbps and 2048 kbps. The HDSL payload rates are menu selected

in time slot increments of 64 kbps, ranging from 256 kbps to 2048 kbps. Transmission ranges vary according

to the rate selected. Depending on noise environment, ranges of up to 7.1 km (4.4 miles) are possible at the

lowest-selectable HDSL payload rate (256 kbps) using 0.51 mm wire. Longer ranges are possible with larger

wire.

•

These HDSL units are configured as Data Communications Equipment (DCE) and respond to data, clock, and

control signals from Data Terminal Equipment (DTE).

Use of this product in a manner other than defined in this technical practice may cause

equipment damage or injury to personnel.

Gebrauch dieses Produkts in einer Weise anders als definiert kann in dieser technischen Praxis

Geräte Schaden oder Verletzung zu Personal verursachen.

RATE SELECTABLE HDSL UNIT FIRMWARE

Version 4.01 is the current release for the rate selectable HDSL unit firmware. This firmware must be installed at

each end of the circuit (that is, in both the LTU and NTU).

WorldDSL RS units are not backward compatible with standard HDSL or management unit

firmware. The installed firmware must be that designed for RS units.

RS G.703 LTUs can communicate with RS Nx64k NTUs, but only if HDSL unit firmware

Version 4.01 or later is installed at each end of the circuit.

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Overview

700-701-100-02

EMU FIRMWARE COMPATIBILITY

The EMU-830 Management Unit firmware must be Version 3.22.08 or later to support rate selectable HDSL units.

APPLICATION INTERFACE

The UTU-701C and ETU-751C provide G.703 interface ports with a rate selectable HDSL payload. The only

application mode is Single, indicating single pair.

The G.703 E1 application interface conforms with the ITU-T G.703 physical specification and can be configured

for an impedance of 75 Ωunbalanced or 120 Ωbalanced. User data can be unstructured or structured according to

the G.704 framing standard, and optionally CRC-4 multiframed according to the G.706 standard. Structured mode

is automatically invoked when 1 to 29 time slots are selected. Unstructured mode is invoked when 30, 31, or 32

time slots are selected.

The exchange office data terminal equipment (DTE) allocates the 2048 kbps E1 payload to the G.703 port in

time-slot increments of 64 kbps each. The number of G.703 time slots allocated by the DTE is determined by the

selected HDSL payload rate (the DTE and HDSL payloads must be set to the same rate). Time slots not allocated

to the G.703 port are replaced by idle codes at the G.703 output.

The UTU-701C and ETU-751C have HDSL payload rates ranging from 256 kbps to 2048 kbps. The desired

HDSL payload rate is selected in time slot increments of 64 kbps from the system settings menu of the

LTU-configured unit. The selected payload rate applies to both the receive and transmit directions. The

LTU-configured unit automatically configures the NTU-configured unit for the same payload rate. Table 1 lists

the characteristics of the rate selectable G.703 line and desktop units covered in this practice.

Table 1. Rate Selectable G.703 Unit Characteristics

User Selected

HDSL Payload

Rates (kbps)

Actual

HDSL Payload

Rates (kbps)

LTU/NTU

Configurable

Model

Interface

UTU-701C

ETU-751C

G.703

64 to 2048

256 to 2048

Yes

The G.703 units always transmit time slots 0 and 16, which results in 128 kbps being added to the user-selected

HDSL payload rate (when 1 to 30 time slots are selected). For example, the lowest-selectable HDSL rates, 64 and

128 kbps, are transmitted at 256 kbps. This 128 kbps increase in payload rate, however, does not affect the rate of

the G.703 data received at the customer or network DTE.

Figure 1 shows a single-pair, leased-line data application using 4 time slots for a 256 kbps HDSL payload rate.

Customer data is input to the remote G.703 port at the 256 kbps rate, transported over the HDSL loop at an

increased 384 kbps rate, and received by the exchange office DTE at the original 256 kbps rate. For more

information, see “Rate Selectable Application Modes and Options” on page 14 and “G.704 Framing and Rate

Selectable HDSL” on page 17.

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Overview

Customer Side

Network Side

UTU-701

(LTU)

UTU-701

(NTU)

Single Pair

HDSL loop

Exchange

Office

HDSL

G.703

DTE

Time Slots 1 through 4

+Time Slots 0 and 16

4 Time Slots

(256 kbps)

Customer

DTE

G.703

(256 kbps)

(384 kbps)

Figure 1. Leased Line Data Application on a Single-pair G.703 Network

HDSL TECHNOLOGY

HDSL is the core technology for ADC’s WorldDSL line of LTUs, UTUs, and ETUs. Rate selectable HDSL

enables these units to transmit and receive digital data at various rates over various distances on one twisted pair

of copper wire. Both outbound and inbound signals are delivered on the same pair of wires by using echo

cancellation techniques. The transmitted signal is canceled at the receiver by precisely predicting the amount of

signal echo, then subtracting it from the overall input signal. ADC’s market leading HDSL-based products tolerate

crosstalk, and operate not only on continuous unobstructed pairs of wires, but also on cables with mixed wire

gauges and bridged taps.

TRANSMISSION RANGES

Transmission ranges assume the presence of noise according to the ETSI model described in TS 101 135. The

expected Bit Error Rate (BER) using this model is 1x10^-7. The transmission ranges in such a noise environment

at the various HDSL line rates over one twisted-pair of 0.4 mm and 0.51 mm copper wire are listed in Table 2.

The no noise transmission ranges are listed in “Specifications” on page 9.

‘

Table 2. Transmission Ranges with 0 db ETSI Noise

RS G.703 HDSL Payload Rate

Wire Size and Transmission Range (with 0 dB ETSI Noise)

User Selected

HDSL Payload

Rate (kbps)

Actual

0.4mm (26 AWG)

0.51mm (24 AWG) Single

Single Twisted-Pair

Twisted-Pair Copper Wire

Copper Wire

HDSL Payload

Rate (kbps)^(a)

64/128

256

384

4.1 km (13,451 ft.)

3.6 km (11,811 ft.)

3.4 km (11,155 ft.)

3.0 km (9,842 ft.)

2.6 km (8,530 ft.)

2.2 km (7,218 ft.)

2.0 km (6,562 ft.)

5.1 km (16,730 ft.)

4.7 km (15,420 ft.)

4.5 km (14,760 ft.)

4.2 km (13,779 ft.)

3.4 km (11,155 ft.)

2.9 km (9,515 ft.)

2.4 km (7,874 ft.)

256

384

512

640

768

1024

1152

1536

2048^(b)

1408

1920/1984/2048

(a) See “G.704 Framing and Rate Selectable HDSL” on page 17.

(b) System operates in unstructured mode when 32 time slots are selected.

(b) The maximum no-noise transmission range is approximately 7.1 km (4.4 miles). See “Specifications” on page 9.

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FRONT AND REAR PANEL COMPONENTS

The line and desktop unit front panels are shown in Figure 2 and Figure 3, respectively. The components on these

panels are described in Table 3 on page 5 and in Table 4 on page 6.

The ETU-751C desktop unit rear panel is shown in Figure 4 on page 7. The components on this panel are

described in Table 5 on page 7. The pinouts for the desktop unit rear panel connectors are listed in Table 34 and

Table 35 on page 64.

SYNC

HDSL

ALM

HDSL LEDs

I/F

I/F ALM LED

LPBK

Loopback LEDs and

push buttons

Bar code label

(located on circuit

side of line card)

V.24 (RS-232) console port

Warranty control

number label

UTU-701

G.703

Figure 2. UTU-701C Line Unit Front Panel

Loopback LEDs

and push buttons

V.24 (RS-232)

console port

HDSL LEDs

WorldDSL

HDSL

G.703

Unit ID and bar code labels

(located on bottom of unit)

ALM I/F LED

Figure 3. ETU-751C Desktop Unit Front Panel

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Overview

Table 3. Line and Desktop Unit Front Panel Components

Function

Name

HDSL SYNC LED

HDSL ALM LED

I/F ALM LED

Displays synchronization state for the HDSL loop.

Displays alarm state for the HDSL loop.

Displays alarm state for the G.703 data port.

Displays local (LOC) loopback state.

LOC LPBK LED

LOC LPBK Button

REM LPBK LED

REM LPBK Button

Activates the local HDSL analog loopback.

Displays remote (REM) loopback state.

Activates the remote interface loopback.

V.24 (RS-232) console

port

Provides bi-directional communication between the unit and an external maintenance terminal through

a V.24 (RS-232C) interface to allow configuration and performance monitoring through the console

screen menus as described in “System Configuration” on page 25. This connector can also be used to

download new firmware to the line unit’s flash memory as described in “Firmware Download Utility” on

page 62. This port is configured as DCE (see “Maintenance Terminal Connection” on page 25 for

pinouts).

Bar code label (all units)

Warranty control

Contains the serial number and part number of the unit, as indicated in both bar code and text format.

Also contains the configuration number of the unit, as indicated by "CFG: Rnn," where nn is the

configuration number. For example, CFG: R07 would indicate configuration number 07.

Indicates the beginning year and month of the line card warranty. Also indicates the line card revision

number label (UTU-701C) number. For example, a warranty control number of "803R07" would indicate a warranty beginning in

the year 1998 (8), during the month of March (03), and line card revision number R07.

Unit ID label (ETU-751C) Identifies the model number, manufacturer, part number, and input voltage range of the ETU. Includes

the CE mark, certifying that the unit is in compliance with directive EN300 386-2. See “Certification and

Warranty” on the inside of the back cover.

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Table 4 defines the system states indicated by the front panel LEDs. When power is applied to the unit, one of the

LEDs listed in Table 4 will always be on.

Table 4. Line and Desktop Unit Front Panel LED Indications

LED

Mode

Description

HDSL SYNC LED

Steady green

Slow blinking

Off

HDSL loop is ready to transmit and receive data across all spans.

HDSL loop acquisition is in progress for local span.

HDSL loop is not configured.

HDSL ALM LED

Steady red

Loss of sync word (LOSW); or the margin is below the set margin

alarm threshold; or Errored Seconds (ES) count is above

threshold on any span.

Pulsing red

Off

Pulses for every ES on any span.

Normal transmit or receive data is in progress.

I/F ALM LED

Steady red

Loss of Signal (LOS) alarm due to loss of G.703 signal or Loss of

Clock (LOC) alarm due to loss of external clock (when using EXT

timing).

LPBK LEDs ^(a)

LOC

REM

Off

Steady yellow

Off

Local HDSL analog loopback is active.

No loopbacks are active.

Off

Blinking yellow

Off

Local interface loopback is active.

Steady yellow Remote loopback is active.

Blinking yellow

Blinking yellow A loopback away from the local equipment is active.

(a) The LOC and REM LPBK LEDs are read in unison.

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Figure 4. ETU-751C Desktop Unit Rear Panel

Table 5. ETU-751C Desktop Unit Rear-Panel Components

Item

Description

D15F 120ΩG.703

connector

Connects E1 balanced 120 Ωcircuits to the enclosure.

BNC 75ΩIn/Out G.703

connectors

Connects E1 unbalanced 75 Ωcircuits to the enclosure.

D9F HDSL line connector

On/Off switch

Connects the HDSL pair to the enclosure.

Rocker switch that allows you to turn the externally applied AC power on or off.

Accepts female end of three-prong power cord supplying 100-240 Vac at 50-60 Hz.

Power cord receptacle

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WORLDDSL PRODUCT COMPATIBILITY

The line and desktop units are compatible with the WorldDSL products listed in Table 6.

Table 6. WorldDSL Product Compatibility

Model

Description

Part Number

Rate-Selectable HDSL Units

UTU-702C

UTU-712C

UTU-722C

ETU-752C

ETU-762C

ETU-772C

Rate-selectable HDSL Line Unit, Nx64k Serial Data Interface,

128 to 2048 kbps HDSL Line Rate

150-1422-02C

150-1422-12C

150-1422-22C

Rate-selectable HDSL Line Unit, Nx64k Serial Data Interface,

128 to 768 kbps HDSL Line Rate

Rate-selectable HDSL Line Unit, Nx64k Serial Data Interface,

128 to 256 kbps HDSL Line Rate

Rate-selectable HDSL Desktop Unit, Nx64k Serial Data Interface, 150-1432-02C

128 to 2048 kbps HDSL Line Rate

Rate-selectable HDSL Desktop Unit, Nx64k Serial Data Interface, 150-1432-12C

128 to 768 kbps HDSL Line Rate

Rate-selectable HDSL Desktop Unit, Nx64k Serial Data Interface, 150-1432-22C

128 to 256 kbps HDSL Line Rate

Shelves and Enclosures for UTU-701C

(a)

(b)

EMS-830 List 1

EMS-830 List 2

Exchange office management shelf, rear connector access

Single-slot remote enclosure with internal AC power supply

150-1400-01

150-1400-11

150-1411-1x

(c)

ERE-811

(d)

Connector Adapters for ETU-751C

ECA-800

ECA-801

ECA-802

ECA-804

ECA-807

D25M to M34F connector adapter (V.35)

D25M to D15F connector adapter (X.21)

150-1470-01

150-1471-01

150-1472-01

150-1474-01

150-1477-01

DB9M to RJ-45 connector adapter (HDSL)

DB9M to 4-position terminal block connector (HDSL)

DB25M to DB37F connector adapter (RS-449)

(a) The EMS-830 List 1 supports protection switching, the EMS-830 List 2 does not.

(b) The EMS-830 List 2 is CE marked. The EMS-830 List 1 is not, and is intended for use in applications

where the CE Mark is not required.

(d) The ECA-80x series of connector adapters and their pinouts are listed in Table 36 through Table 39,

beginning on page 65.

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Specifications

SPECIFICATIONS

HDSL Interface

Line Code

2B1Q

Line Rate (selectable in increments of 64 kbps) Up to 2048 kbps

Protection

K.20, K.21

TS 101 135

Compliance

Transmission Ranges ( 200 m):

Transmission Ranges with 0 dB ETSI Noise

Transmission Ranges with No Noise

0.4 mm (26 AWG)

Single Twisted-Pair

Copper Wire

0.51 mm (24 AWG)

Single Twisted-Pair

Copper Wire

0.4 mm (26 AWG)

Single Twisted-Pair

Copper Wire

0.51 mm (24 AWG)

Single Twisted-Pair

Copper Wire

HDSL Line

Rate (kbps)

256

384

4.1 km (13,451 ft.)

3.6 km (11,811 ft.)

3.4 km (11,155 ft.)

3.0 km (9,842 ft.)

2.6 km (8,530 ft.)

2.2 km (7,218 ft.)

2.0 km (6,562 ft.)

5.1 km (16,730 ft.)

4.7 km (15,420 ft.)

4.5 km (14,760 ft.)

4.2 km (13,779 ft.)

3.4 km (11,155 ft.)

2.9 km (9,515 ft.)

2.4 km (7,874 ft.)

5.3 km (17,388 ft.)

4.7 km (15,420 ft.)

4.6 km (15,092 ft.)

4.3 km (14,108 ft.)

3.7 km (12,139 ft.)

3.3 km (10,827 ft.)

3.0 km (9,842 ft.)

7.1 km (23,294 ft.)

6.7 km (21,982 ft.)

6.3 km (20,669 ft.)

5.9 km (19,357 ft.)

5.3 km (17,388 ft.)

4.7 km (15,420 ft.)

3.2 km (10,499 ft.)

512

768

1152

1536

2048

G.703 Interface

Unstructured Leased Line

Structured Leased Line

Fractional E1

2.048 Mbps per ETS 300 247 (D2048U)

2.048 Mbps per ETS 300 419 (D2048S)

User-selectable DS0 blocking, with user-programmable idle code

Line Code

HDB3

Line Rate

2.048 Mbps

Impedance (jumper selectable)

120 Ωbalanced (twisted-pair)

75 Ωunbalanced (coax)

CRC-4 mode

Compliance

User-selectable CRC-4 detection and generation

ITU-T G.703, G.704, G.706, G.821, G.823, CTR 12

Timing

Clock Source

G.703 input

External 2.048 MHz clock (per G.703 par. 10)

Internal Oscillator

2.048 MHz 50 ppm

Performance Monitoring and Diagnostics

HDSL

Noise margin, pulse attenuation, ES, UAS

G.703 Interface

Major Alarm Relay

Loopbacks

ES, SES, UAS per G.821. CRC-4 errored seconds, BPV seconds

Form-C relay contacts (NO, NC, C). Fail-safe operation

Local interface loopback, local HDSL loopback (V.54 loop 3),

remote loopback (V.54 loop 2)

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Specifications

700-701-100-02

Alarms

Can be individually set to Disabled, Minor, or Major (major alarms actuate the LTU or NTU alarm relay)

E1 Interface

Loss of Signal (LOS)

Loss of Framing (LFA)

Alarm Indication Signal (AIS)

Remote Alarm Indication (RAI)

External Clock

HDSL Loop

Loss of Clock (LOC)

Margin, programmable threshold (MAR)

Errored Seconds, programmable threshold (ES)

Loss of Sync Word (LOSW)

History

E1 and HDSL Interface

24-Hour (15-minute intervals) and 7-Day (24-hour intervals) for

ES and UAS

Alarm

Time stamp of first and last occurrence, number of occurrences for

all enabled alarms

Power Requirements

UTU-701C

Local input voltage

Consumption (typical)

ETU-751C

-36 Vdc to -72 Vdc (see note at bottom of page)

4.5 W

Local input voltage

Consumption (typical)

100 to 240 volt, 50 or 60 Hz, AC power

4.5 W

Environmental

Operating Temperature Range

Humidity

0 ° C to +50 ° C (32 °F to 122 °F)

Up to 95% non-condensing

Storage Temperature

Storage Humidity

-40 °C to +70 °C (-40 °F to 158 °F)

5% to 95% non-condensing

Regulatory Approvals

CE Mark Certification

EN300 386-2

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Functional Description

FUNCTIONAL DESCRIPTION

This section provides a functional description of the line and desktop units, including major components,

single-pair application mode, alarms, and testing (including monitoring and loopbacks).

MAJOR COMPONENTS

The major components of the line and desktop units include:

•

G.703 interface (75 or 120 Ω)

rate selectable HDSL interface (including framing, transceiver, and line interface circuits)

system timing circuits

processor

Figure 5 is a functional block diagram of the line and desktop units.

100-240V

50/60 Hz

AC power

(ETU-751)

On-board

power

-36V to -72V

DC power

(UTU-701)

supply

module

Timing

circuits

+5V, +3.3V

HDSL

loop

75 and 120 Ω

DTE Interface

G.703

Interface

Transceiver

Line interface

HDSL framer

Ext. clock

from management

unit (UTU-701 only)

Control

Status

Processor

Front panel

control and

Alarm relay

(UTU-701 only)

console interface

Management unit

backplane interface

(UTU-701 only)

RS-232

console port

Figure 5. Line and Desktop Unit Functional Block Diagram

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Functional Description

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G.703 Interface

The G.703 interface performs the following functions:

•

provides a jumper-selectable 75 or 120 ΩDTE interface (see “Installation and Startup” on page 23 for jumper

locations)

•

allocates full or fractional portion of the total 2048 kbps bandwidth to and from the G.703 interface

frames data according to G.704

inserts an idle code into unused time slots at the G.703 output

recovers timing from the received G.703 signal

monitors multiframe CRC-4 errors in the received G.703 signal

regenerates multiframe (CRC-4) code at the G.703 output

regenerates time slot 0 at the G.703 output

transports time slot 16 transparently between G.703 ports

The G.703 interface operates in the structured application mode when less than 32 time slots are selected and in

the unstructured mode when 32 time slots are selected (see “System Configuration” on page 25). These modes are

described in detail in the “Rate Selectable Application Modes and Options” on page 14.

HDSL Interface

The HDSL interface includes the HDSL framer, which performs HDSL multiplexing and demultiplexing;

a firmware-controlled programmable clock, which sets the HDSL line rate at the interface output; and the

transceiver and line-interface circuits for the single HDSL pair.

In the transmit direction, the HDSL framer accepts inputs from the G.703 data port as shown in Figure 5. The data

is placed on the HDSL pair along with the HDSL overhead bits for presentation to the transceiver. A clock

representing the selected HDSL line rate is introduced to the transceiver, which outputs data on the single-pair

HDSL line. In the receive direction, overhead bits are stripped and processed, and time slots are output to the

G.703 interface.

Reversals of Tip and Ring wires are automatically detected and accommodated. The Monitor HDSL Span screen

indicates if the Tip and Ring wires are reversed.

System Timing Circuits

The UTU and ETU units can synchronize to any one of the following timing sources:

•

G.703: Timing recovered from G.703 input signal

EXT: External 2.048 MHz reference (available only for UTUs in a shelf with a management unit installed)

Processor

This device runs a program which in real-time:

•

monitors the HDSL framer performance

responds to user requests

maintains a history of system performance

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Functional Description

Power Sources

The line and desktop units receive power from the following sources:

•

A shelf-mounted UTU-701C receives power from a local source of -36 Vdc to -72 Vdc.

An enclosure mounted UTU-701C receives power from a local source of -36 Vdc to -72 Vdc or from the

enclosure’s built-in AC-to-DC power supply (when provided).

•

The ETU-751C desktop unit receives power from a source of 100 to 240 volt, 50 or 60 Hz, AC power.

Input voltage for the UTU-701C line unit (nominal -48 Vdc, tolerance -36 to -72 Vdc) must be

supplied by an isolated DC source that complies with TNV or earthed SELV requirements of the

latest version of IEC 950.

The single-pair rate selectable HDSL units (local and remote) must be locally powered.

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Functional Description

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RATE SELECTABLE APPLICATION MODES AND OPTIONS

Applications for single-pair rate-selectable HDSL are those that require transport of voice and data at various rates

over various distances on a single pair of wires. Depending on line noise and the HDSL rate selected, spans of up

to 7.1 km (4.4 miles) can be deployed without the use of doublers. The HDSL line rate depends on the number of

time slots selected. The UTU-701C and ETU-751C each have 32 time slots with a bandwidth of from 256 kbps

to 2048 kbps (1 to 32 time slots selected). Each time slot represents a 64 kbps increment of the available

bandwidth.

The available rate selectable application modes and options are:

•

single

structured

unstructured

CRC-4

Single Mode

Single is the only application mode displayed in the Config System Settings menu. It means the system uses a

single pair of twisted copper wires to transport data.

Structured Mode

When less than 32 time slots are selected, the line and desktop units automatically operate in the structured

mode (see “G.704 Framing and Rate Selectable HDSL” on page 17). There is no structured mode menu selection.

In structured mode, data at the G.703 interface is framed according to G.704. This permits fractional allocation of

the total 2048 kbps bandwidth to and from the G.703 interface, insertion of idle code into unused time slots at the

G.703 output, and monitoring of the G.703 input for CRC-4 multiframe errors.

A typical structured mode application is illustrated in Figure 6. The settings for this application are listed in

Table 7. Time slots 1-15 and 17-25 are transported as telephony voice channels between the G.703 ports of the

two units. Time slots 26-31 are unused and are set to idle code FF. In structured mode, time slot 1 is the beginning

time slot; time slot 0 is regenerated at the G.703 output. With the CRC-4 mode enabled, the input G.703 signal is

monitored for CRC-4 multiframe errors and at the G.703 output, a new CRC-4 code is generated. Time slot 16 is

transported transparently between G.703 ports and may be used for telephony signaling.

Figure 6. Typical Structured Mode Application

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Functional Description

Table 7. Typical Structured Mode System Settings

Options

Setting

Application Mode

<32 TS (Structured)

LTU Interface

Primary Timing Source

G.703 Port

G.703

CRC-4 Mode

Enabled

Idle Code

Data Rate / # of TSs

Beginning TS

1536 kbps / 24

NTU Interface

Primary Timing Source

G.703 Port

G.703

CRC-4 Mode

Enabled

Idle Code

Data Rate / # of TSs

Beginning TS

1536 kbps / 24

For applications requiring fractional use of the G.703 port, embedded generation and detection of CRC-4

information, and A-bit insertion, select less than 32 time slots to invoke the structured mode. In the structured

mode time slot 0 is regenerated according to G.704 at the output of the G.703 interface port. The following values

apply:

•

The Sa bits are always set to 1.

The A bit is normally set to 0 at the G.703 output port. It is set to 1 during an active Loss of Signal (LOS),

Alarm Indicating Signal (AIS), or a Loss of Frame Alignment (LFA) condition, if the alarm associated with

the respective condition is not disabled (see “Configure LTU and NTU Interfaces” on page 39).

•

When CRC-4 mode is disabled, the Si bit is transparently transmitted (that is, unmodified from the HDSL

input data stream).

When CRC-4 mode is enabled, the Si bit is set to a new CRC-4 multiframe signal and checksum (according

to G.706).

The E-bits are nominally set to 1 and set to 0 for each error in the incoming CRC-4 sub-multiframe.

Match the CRC-4 mode at each interface to the actual type of data present at that node in the

system. Otherwise CRC-4 data will not be transparently transmitted in CRC-4 disabled mode.

Also, non-CRC-4 data generates an LFA alarm in CRC-4 enabled mode.

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Functional Description

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Unstructured Mode

When 32 time slots are selected, the line and desktop units automatically operate in the unstructured mode (see

“G.704 Framing and Rate Selectable HDSL” on page 17). There is no unstructured menu selection.

In the unstructured mode:

•

There is no G.704 framing.

Time slot 0 is the beginning time slot, and the data rate is fixed at 2048 kbps.

A transparent transmission channel is provided between the local and remote units.

CRC-4 detection and generation are not available, and E1 alarms are limited.

Any framing, multiframing, and common-channel signals can be transmitted through the HDSL line units in the

unstructured mode, but the units do not monitor for a loss of framing condition.

Table 8 lists system settings for 2048 kbps transport of data between a DTE connected to an UTU-701C and a

DTE connected to an ETU-751C. The settings in Table 8 use the G.703 signal from the UTU-side DTE as the

primary timing source. Timing at the ETU side is recovered from the received G.703 signal. This application is

illustrated in Figure 7.

Table 8. Typical Unstructured Mode System Settings

Options

Setting

Application Mode

32 TS (Unstructured)

UTU-701C (LTU) Interface

Primary Timing Source

G. 703 Port

G.703

CRC Mode

N/A

Idle Code

Data Rate/# of TSs

Beginning TS

2048 / 32 TSs

ETU-751C (NTU) Interface

Primary Timing Source

Data Rate / # of TSs

Beginning TS

G.703

2048 / 32 TSs

Customer Side

Network Side

ETU-751

(NTU)

UTU-701

(LTU)

Single Pair

HDSL loop

HDSL

Exchange

Office

Time Slots

Customer

DTE

G.703

Time Slots

(2048 kbps)

G.703

(2048 kbps)

DTE

Figure 7. Unstructured Mode Application

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Functional Description

G.704 Framing and Rate Selectable HDSL

Time slots 0 and 16 are always transported in accordance with the G.704 framing standard. Although not used by

G.703 to transport data, the rate-selectable HDSL interface treats time slots 0 and 16 as a 128 kbps increase in the

HDSL payload rate. For example, when 4 time slots are selected (256 kbps), time slots 0 and 16 are transported

along with the selected time slots, 1 though 4. This results in an HDSL payload rate of 384 kbps (that is, 256 kbps

plus the 128 kbps added by time slots 0 and 16). Table 9 lists several examples of selected and actual HDSL

payload rates.

In structured mode, time slots 0 and 16 do not contain data and are transparent to the G.703 input. The transmitted

G.703 data arrives at both the customer and network DTE at the selected HDSL payload rate. This is illustrated

in Figure 6 on page 14.

Table 9. Examples of Selected and Actual HDSL Payload Rates

SelectedHDSLPayload

Rate (kbps) / Number of

Time Slots

Actual HDSL Payload

Rate (kbps)

G.703 Time Slots Transported

1 (plus 0 and 16)

64 / 1

128 / 2

256

1 and 2 (plus 0 and16)

192 / 3

1 through 3 (plus 0 and16)

320

256 / 4

1 through 4 (plus 0 and16)

384

384 / 6

1 through 6 (plus 0 and16)

512

512 / 8

1 through 8 (plus 0 and16)

640

640 / 10

768 / 12

896 / 14

1024 / 16

1152 / 18

1536 / 24

1920 / 30

1984 / 31

2048 / 32

1 through 10 (plus 0 and16)

768

1 through 12 (plus 0 and16)

896

1 through 14 (plus 0 and16)

1024

1152

1280

1664

2048

1 through 15 and 17 (plus 0 and16)

1 through 15, 17 through 19 (plus 0 and16)

1 through 15, 17 through 25 (plus 0 and 16)

1 through 15, 17 through 31 (plus 0 and 16)

1 through 31 (plus 0)

(a)

0 through 31

(a) The line and desktop units operate in the unstructured mode when 32 time slots are selected.

HOT SWAPPING

UTUs can be inserted and removed from any compatible shelf or enclosure with the power turned on. This will

not cause damage to the units nor will it cause interference to any other HDSL circuits that are operating within

the same shelf or enclosure.

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Functional Description

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PERFORMANCE MONITORING AND HISTORY

The UTU and ETU units provide extensive real time, non-disruptive monitoring of HDSL transmission

performance parameters for all units in a circuit. Performance of the user interface ports is also monitored. Current

cumulative counts of the past 24 hours and historical data in the form of 24-hour history (in 15-minute increments)

and a 7-day history (in 24-hour increments) are available to assist in identifying problem sources during

troubleshooting. See “Viewing Status” on page 46 for information on performance screens.

The monitored parameters are described in Table 10.

Table 10. Monitored HDSL Transmission and Interface Performance Parameters

Monitored Parameter

Description

HDSL Noise Margin

A measure of the ratio of signal power to noise power, in decibels (dB), at a receiver point. A value

of 0 dB means that the predicted transmission BER is equal to 10^–7. A value of 6 dB means the

predicted transmission BER is equal to 10^–10. The Main menu status display continuously updates the

margin value.

HDSL CRC-6

A six-bit word in every HDSL frame, representing a calculation based on all the bits in that frame. Any

mismatch at the receiver, between the received CRC-6 and the one calculated, based on the received

data in the frame, indicates that one or more bits were received in error. The units use this parameter

to derive HDSL Errored Seconds (ES).

HDSL Loss of Sync Word

(LOSW)

The unit has detected an error in one or more bits in six consecutive HDSL sync words. TS 101 135

requires two consecutive sync words to be received without error to clear this condition. A LOSW

condition generally indicates the loop is down, thus data cannot be transmitted.

Based on the monitored parameters, the LTU and NTU units derive the following performance parameters:

HDSL Errored Second (ES) An interval of one second during which at least one CRC-6 error is detected at the incoming HDSL

port or there is an LOSW condition.

HDSL Unavailable Second

(UAS)

A second during which a loop is down.

ALARMS

The UTU and ETU units generate alarms for problem conditions on the HDSL transmission facility and at the

local application interface. Alarms can be individually enabled or disabled as well as configured as a Major or

Minor alarms. See “System Configuration” on page 25 to configure alarms. See “Viewing Status” on page 46 to

view alarm conditions.

The HDSL transmission and application interface alarms are described in Table 11 on page 19.

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Functional Description

Table 11. HDSL Transmission and Application Interface Alarms

Alarm

Description

HDSL Alarms

HDSL alarms include:

Margin (MAR)

Margin has fallen below threshold set for the HDSL interface.

Errored seconds count has exceeded threshold set for the HDSL interface.

Errored Seconds (ES)

Loss of Sync Word

(LOSW)

Loss of sync word at the HDSL interface. Remains active during restart, but not a cold start.

G.703 Alarms

G.703 alarms include:

Loss of Signal (LOS)

Loss of signal at the G.703 input.

Loss of frame alignment at the G.703 input.

Loss of Frame Alignment

(LFA)

Receive Alarm Indication

Signal (AIS)

Remote Alarm Indication

Signal (RAI)

Alarm indication signal (unframed all ones) received at the G.703 input.

Remote alarm indication signal received at the G.703 input (through A-bit).

Loss of Clock (LOC)

Applies to loss of external clock when EXT timing is used. The external clock was lost for the

previous second. This alarm is reset when the clock is active again.

LOOPBACKS

An HDSL system maintains several diagnostic loopback configurations, both toward and away from the local unit,

which can be used to verify proper transmission of test data through the local unit, the HDSL facility, and the

remote unit. Figure 8 on page 19 shows all possible loopback paths. Table 12 on page 20 lists available loopbacks.

During loopbacks the system generates an Alarm Indication Signal (AIS) past the loopback point toward the far

unit. Loopbacks can be activated from the LOC (local) and REM (remote) front-panel pushbuttons, the console

Test menus, and the management unit interface. Table 13 on page 21 lists loopback equivalents for different

activation methods. Only one loopback option can be enabled at a time. During a loopback, the Loopback LEDs

on the front panel indicate the type of loopback currently present in the system. See Table 4, “Line and Desktop

Unit Front Panel LED Indications,” on page 6.

The system reverts to normal transmission of payload data after the specified timeout period has elapsed. If a

timeout period is not specified, the loopback must be manually disengaged before normal transmission of data can

resume.

Test loopbacks disrupt normal end-to-end transmission of customer data and are the

equivalent of taking the circuit out of service. The circuit does not revert to normal operation

until loopbacks are disengaged manually or until after the specified loopback timeout period

has expired.

LTU Interface

NTU Interface

Single-pair

HDSL loop

HDSL

Nx64k

Figure 8. Loopback Operations

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Table 12. Loopbacks Selected at Front Panel Pushbuttons and Console Screens

Description

Loopback

The two loopbacks that follow can be selected from the LOC and REM front-panel pushbuttons, the console screens, or the

management unit interface.

LOC Pushbutton—Local

HDSL Loopback

This is an analog loopback implemented in both HDSL transceivers, and enables a complete checkout

of the local equipment by looping back data at the furthest point before the transmission media. The

HDSL link goes down as a result of this loopback, and is therefore not selectable from the remote unit

console screens.

REM Pushbutton—Remote Data is transmitted across the HDSL link and looped back at the remote interface ports. The HDSL

Loopback

link must be up for this loopback to be available. With no HDSL link up, the REM button will not enable

any loopbacks.

The three loopbacks that follow are available exclusively from the console screens or management unit interface.

Local Interface Loopback

Data is looped back at the closest point in the local unit toward customer equipment. This loopback

is useful for verification of a proper connection at the local interface between your DTE and the local

HDSL card. The HDSL link is maintained during this loopback.

Local or Interface Loopback Data is looped back at the local unit or remote unit back toward the remote DTE equipment. This is

Away from the Local

Equipment

equivalent to pressing the REM button on the remote unit’s front panel, and is made available at the

local console screen for ease of installation. The injected test data and loopback verification must still

be performed at the remote unit site. Local equipment outputs an AIS for the duration of this test.

Remote Interface Away

from the Local Equipment

Data is looped back at the remote unit toward the remote DTE equipment. This is available at the local

console screen for the duration of this test. The injected test data and loopback verification must still

be performed at the remote unit site. Local equipment outputs an AIS for the duration of this test.

The following applies to LTU and NTU loopbacks:

•

No inband loopback codes are recognized or generated.

A remote HDSL loopback is not available from the local console screen as it causes the HDSL link to go down

and requires user action at the remote unit to disengage the loopback.

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Functional Description

Table 13 summarizes the equivalent loopbacks for two different activation methods:

•

LTU and NTU LOC and REM buttons

console screen Test menus (see “Testing” on page 60 for loopback operation from the Test menus)

Table 13. Loopback Equivalents

Console Screen Test Menu

Front Panel

Loopback mode

Loopback Position

LTU LOC button

LTU REM button

NETWORK ^(a)

NETWORK

LTU-HDSL

NTU-I/F

NETWORK

LTU-I/F

NTU LOC button

NTU REM button

CUSTOMER ^(b)

CUSTOMER

NTU-HDSL

LTU-I/F

NTU-I/F

(a) Activated from console screen Test menu at LTU.

(b) Activated from console screen Test menu at NTU.

BER TESTING

The HDSL units provide a mechanism for validating circuit integrity utilizing a pseudorandom bit sequence

(PRBS) generator and BER meter internal to the LTU unit. This diagnostic test disrupts the normal flow of

payload traffic, and requires the presence of a Network NTU-I/F loopback or an external physical loopback at the

NTU interface connector. The test is run at the selected HDSL Payload Rate (see Table 18 on page 38). BER

results are accumulated continuously and updated on the console screen at intervals of approximately 16 seconds.

The PRBS data pattern is always generated at the LTU toward the HDSL channel, and the BER is always

measured at the LTU based on data received from the HDSL channel. The test may be initiated and stopped from

the Test menu at either the LTU or NTU console screen.

The BER test must be stopped before leaving the test menu to restore normal

payload transmission. Typing ESC while the BER test is in progress causes the

following message to display: “BER Test in Progress. Must STOP

before leaving screen.”

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INSPECTION, SAFETY, AND EQUIPMENT REPAIR

This section describes the procedures to be followed regarding product inspection, safety, and repair.

INSPECTION

Open the line or desktop unit shipping carton and inspect the contents for signs of damage. If the equipment was

damaged in transit, immediately report the extent of the damage to the transportation company and to ADC (see

“Product Support” on page 69).

SAFETY

To ensure safety of personnel and equipment, carefully observe the following safety rules:

Input voltage for the UTU-701C line unit (nominal -48 Vdc, tolerance -36 to -72 Vdc) must be

supplied by an isolated DC source that complies with TNV or earthed SELV requirements of the

latest version of IEC 950.

Be careful when installing or modifying telephone lines. Dangerous voltages can be present. It

is unsafe to install telephone wiring during a lightning storm.

Always disconnect all telephone lines and power connections before servicing or disassem-

bling this equipment. All wiring external to the product should follow the local wiring codes.

Die Eingangsspannung fuer die UTU-701C Karte is nominell –48 VDC, Toleranz -36 bis –72 VDC.

Die Gleichstromquelle muss den Vorschriften gemäß der Norm EN60950 fuer

Fernsprechnetzspannung (TNV) und Sicherheitskleinspannung (SELV) entsprechen.

Bitte beachten Sie, dass beim Installieren oder Veraendern von Telefonleitungen gefaehrliche

Spannungen entstehen koennen. Es ist ebenfalls gefaehrlich, waehrend eines Gewitters

Installationen an Telefondraehten vorzunehmen.

Bei Installation, Wartung oder Veraenderung des Geraetes muessen alle Telefon- und Netzkabel

ausgezogen werden. Alle externen Verdrahtungsarbeiten sollten gemaess den

Elektrizitaetsvorschriften des jeweiligen Landes ausgefuehrt werden.

EQUIPMENT REPAIR

To ensure the equipment does not become damaged, carefully observe the following cautions:

If a problem has been isolated to this unit, do not attempt to repair it. The unit's components

are not user serviceable and, therefore, must not be replaced. Please return the unit to ADC for

repairs.

Wenn eine Störung auf dieses Gerät zurückgeführt werden kann, sollte man nicht versuchen es

zu reparieren. Die Geräteteile sind nicht vom Endverbraucher zu warten und müssen darum

nicht ersetzt werden. Bitte senden Sie das Geräet zur Reparatur zurueck an ADC.

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Installation and Startup

INSTALLATION AND STARTUP

This section describes the installation and startup procedures for the line and desktop units.

UTU-701C LINE UNIT INSTALLATION

Perform the following steps to install the UTU-701C line unit.

The chassis ground of the shelf or remote enclosure receiving these units must be connected

to earth ground for protection of the equipment and for safety of personnel.

Primary protection for the HDSL line must be provided by the user. Both primary and secondary

protection must be provided by the user if the E1 line runs outside of the building.

Align the UTU-701C with the card guides in the shelf or enclosure (see Figure 9).

Slide the line unit into the guides, then push the unit inward until it seats firmly in the card-edge connector.

Tighten the two captive screws on the UTU-701C front panel to secure the unit in place.

If configuring the line unit as an LTU, power up the shelf and proceed as instructed on pages 25 through 27

and 37 to access the Local Unit Role option in the Config System Settings menu (the default setting is NTU).

Set the TT clock at the DTE for the default HDSL payload rate of 256 kbps (4 time slots).

EMS-83x

UTU-701C

Figure 9. Installing the UTU-701C Line Unit

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The line and desktop units will reset and their LEDs will sequence through the startup cycle

following any change to the Local Unit Role option. If necessary, log on again by pressing the

SPACEBAR several times.

ETU-751C DESKTOP UNIT INSTALLATION

Perform the following steps to install an ETU-751C desktop unit.

Insert the AC power cord into the power cord receptacle on the ETU rear panel.

Plug the power cord into a source of 100 V to 240 V, 50 or 60 Hz AC power.

If configuring the desktop unit as an LTU, power up the shelf and proceed as instructed on pages 25 through

27 and 37 to access the Local Unit Role option in the Config System Settings menu (the default setting is

NTU).

Connect the DTE cables to the 120 or 75 Ωconnectors on the ETU-751C rear panel.

Connect the HDSL line cable to the HDSL line connector on the ETU rear panel.

HDSL STARTUP AND SYNCHRONIZATION

The rate selectable LTU holds the configuration settings for the rate selectable NTU. At startup, the LTU first

confirms that the NTU is a rate selectable unit. The LTU then configures the NTU with the required settings.

Power up the rate selectable units and observe the synchronization process as follows:

Power up the shelf or enclosure where the units are installed.

Confirm the following:

•

The HDSL ALM LED is on and the HDSL SYNC LED flashes once per second as the units

self-configure and establish synchronization.

•

After approximately 60 seconds the HDSL ALM LED is off and the HDSL SYNC LED is steady green.

The units are now ready for configuration through the console screen menus.

If the HDSL SYNC LED continues to flash after 90 seconds, the HDSL line is faulty or one of the

units is not a rate selectable unit. Check for the correct line units. Test the HDSL line using the

loopbacks described in “Testing” on page 60. Front panel loopback (LPBK) LED indications are

described in Table 4 on page 6.

The LTU and NTU will reset and their LEDs will cycle through the startup sequence following

any change to the HDSL Payload Rate option (see “Configure System Settings” on page 37).

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System Configuration

SYSTEM CONFIGURATION

Each line unit provides a system-wide view of the entire HDSL circuit, including the remote unit. After

establishing communication with the remote line card, provisioning information can be set and performance can

be monitored from the local unit. If the HDSL link is down, the only parameters that can be changed are those on

the local line unit. The LTU overwrites any NTU settings when the link is re-established. The LTU also provides

a special lockout feature that prevents users plugged into the NTU console port from changing the circuit

configuration. When enabled, the maintenance terminal connected to an NTU provides a read-only view of the

entire HDSL system.

The console screen menus are not available when the HDSL card is under the control of a shelf

management unit.

The line unit option settings are stored in non-volatile RAM (NVRAM). No dip switches or jumpers are required

to configure these options. These options are set from the console screen menus or management unit interface.

Option settings stored in NVRAM are retained if the line unit loses shelf power.

MAINTENANCE TERMINAL CONNECTION

The maintenance terminal (or PC running a terminal emulation program) is used to access the console screen

menus. Through these menus, the system is configured, monitored, tested, and its circuit inventory is displayed.

Maintenance terminal

DB-9 Connector

(DTE)

UTU/ETU

Console port

DB-9 Connector

(DCE)

DTR (Data Terminal Ready)

TD (Transmit Data)

Maintenance terminal

RD (Receive Data)

GND

DB-25 Connector

(DTE)

Figure 10. UTU/ETU Console Port and Maintenance Terminal Connector Pinouts

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To connect and configure a maintenance terminal:

Connect a serial cable from the maintenance terminal 9-pin COM port to the line or desktop unit console port

connector (Figure 11). Ensure the Data Terminal Ready (DTR) signal from the terminal is connected as the

HDSL card will not communicate without it. Data Terminal Ready (DTR) may also be asserted by connecting

the DSR output signal (pin 6) to the DTR input (pin 4).

Line unit

Maintenance terminal

irGain

9-pin COM port

Interface cable

Console port

Figure 11. Connecting a Maintenance Terminal to a Line Unit

Configure the maintenance terminal for the following communication settings:

•

VT100 Emulation or ANSI (if VT100 is not available)

Clear the modem initialization string, if supported by the terminal

Bits per second: 1200, 2400, 4800, 9600 (default), or 19200 bps (recommended)

Data bits: 8

Parity: None

Stop bits: 1

Flow Control: None

If using a PC and Microsoft Windows terminal emulation program, deselect Show Scroll Bars and Use Function,

Arrow, and Ctrl Keys from the Settings Terminal Preferences menu in Windows 3.1 or from the Properties menu

in Windows 95.

MODEM CONNECTION

For remote access to the line unit, an auto-answer modem can be connected to the console port. Use a null modem

cable to connect the WorldDSL line unit and the modem.

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System Configuration

LOGGING ON

To log on to the maintenance terminal console screen:

Press the SPACEBAR several times to display the Logon Password screen (Figure 12).

Figure 12. Logon Password Screen

The ENTER key is the factory default password. If you establish a different password, you must

type the new password (single word, no spaces, up to eight characters) on a subsequent log on.

If the system does not respond, verify that the Hardware Flow Control of the maintenance

terminal is set to NONE.

Type the password at the prompt or press ENTER if a password has not been customized. The console screen

menu bar displays (Figure 13).

Figure 13. Console Screen Menu Bar

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CONSOLE SCREEN STRUCTURE

The following sections describe the structure of the console screen and how to navigate through its menus and

related displays.

The structure of the console screen displays and drop-down menus is shown in Figure 14. The names in the

console screen menu bar identify each display and menu. The arrows in the menu bar following the Monitor,

History, and Config names indicate the presence of a drop-down menu or sub-menu. The designations Display

and Displays indicate that one or more displays are associated with the name in the menu bar or its drop-down

menu.

Figure 14. Console Screen Menu Structure

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Table 14 describes the drop-down menus selected from the console screen.

Table 14. Console Screen Menus

Menu Name

Function

Described in this section

Main

Display the Main console screen to:

• View the circuit configuration

“Main Console Screen” on

page 46

• View performance summary information

• View alarm summary information

Monitor

History

Monitor the past 24-hour performance of the LTU interfaces, NTU

interfaces, or HDSL spans.

“Monitor Menu” on page 48

“History Menu” on page 52

View 24-hour, 7-day, or alarm history displays for any of

the following:

• LTU interface

• HDSL spans

• NTU interface

• Clear all the 24-hour, 7-day or alarm histories

Config

Perform any of the following system functions:

• View or change global operating parameters for the system

“Config Menu Options” on

page 32

• View or change LTU interface, HDSL span, or NTU interface operating

parameters

• View or change alarm parameters

• Set the time and date

• Set or change the unit password

• Change the circuit ID

• Configure terminal display

• Set all operating parameters to factory defaults

Test

Perform any of the following test functions:

• Set the loopback mode and location

• Set the loopback time-out

“Testing” on page 60

• Enable or disable loopback operation

• Initiate BER test and monitor BER results

Inventory

Display registration information to track product manufacturing,

configuration, and revision state.

“Inventory Screen” on page 58

Quit

Log off the system.

“Logging Off” on page 45

Help

Display a screen of helpful information regarding the product.

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READING AND NAVIGATING MENUS

The menu and status bars appear on all console screens. The information on the rest of the screen varies depending

on the function of the menu or screen.

The menu bar displays the name of each menu. Choosing Monitor, History, or Config from the menu bar drops

down a menu of available options. When selected, all options on the Monitor drop-down menu, and the Alarm

option on the Config drop-down menu, display drop-down submenus.

The status bar at the bottom of the screen displays the circuit ID, the current date and time, unit type, and current

system information. Select Config from the console screen menu bar to enter or change the circuit ID and the

current date and time. The items described in Table 15 correspond to the numbers in Figure 15.

Table 15. Console Screen Status Bar Displays

Item

Field

Description

Circuit ID

Shows the user-selected name for the circuit (such as customer name).

Today's date in dd/mm/yy format. Today's time in 24-hour format.

Either LTU or NTU.

Date and time

Local unit role

System information

Displays the current system status. The system information field shows one of

the following:

• Loop down - At least one configured HDSL channel is down, either due to

restart, or startup not completing.

• Alarm - A major alarm condition is currently active in the system. In the case

of a loopback bringing the loop down, LOSW alarms will be ignored.

• Loopback - The system is in a diagnostic loopback configuration.

• Update - Circuit-wide provisioning is in progress.

• Normal - All configured HDSL channels are up in the circuit, no alarms are

present, and provisioning is complete.

Figure 15. Items in Console Screen Status Bar

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Use the keys described in Table 16 to navigate the console screen and its menus:

Table 16. Console Screen Navigation Keys

To Perform this Function

Press this Key

Alpha-numeric keys

Type the underlined or highlighted letter to select and execute a menu item. For example on the

Main console menu, type C to access the Config drop-down menu.

Also use these key to enter values in text fields. For example, on the Config Date and Time menu,

type the date in a DD/MM/YY format.

←

↑

→

↓

and

keys

Moves horizontally across the Menu bar, except when in a text entry field.

Press the

and

keys from the Main console screen to access drop-down menus and their

↑

↓

menu items. For example:

←

→

•

press the and keys to select Config in the menu bar and press the key to access the

↓

drop-down configuration menu, then

•

press the

and

keys to highlight a menu item and press ENTER to select the item.

↑

↓

TAB key

Provides same function as the

key.

↓

CTRL + E moves up one line in the History screens.

CTRL + E

CTRL + X

CTRL + C

CTRL + R

SPACEBAR

CTRL + X moves down one line in the History screens.

CTRL + C performs the page-down function in the History screens.

CTRL + R performs the page-up function in the History screens.

Selects options displayed for current menu item. For example, to select MANUAL or Nx64k AUTO

mode from the Config System Settings menu:

• press the

key to highlight the HDSL Rate Mode option, then

↓

• press the SPACEBAR until the desired option (MANUAL or Nx64k AUTO) is highlighted.

Exits the current screen and returns to the previous screen. Selection changes made on the

current screen are discarded. Press ESC while in a text field to cancel the text entry and restore

the old value.

ESC

Applies all selections on the current screen. For example, to select an HDSL payload rate from

the Config System Settings menu:

ENTER

• press the

key to highlight the HDSL Payload Rate option, then

↓

• type the desired number of time slots (1 to 4) and press ENTER to display the selected HDSL

payload rate (in MANUAL mode only).

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Config Menu Options

Type C at the console screen (Figure 15) to display the Config menu (Figure 16). Table 17 lists the Config menu

options and the order of system configuration.

Figure 16. Console Screen Config Menu

Table 17. Config Menu Options and Recommended Order of System Configuration

Use this Option

To:

See page:

Terminal Settings

Date and Time

Password

Select the best viewing mode for the console screen.

Set the system date and time.

Set or change the system password.

Circuit ID

Assign a circuit ID.

System Settings

LTU and NTU Interface

Alarms

Select and configure system-wide operating parameters.

Select and configure LTU/NTU-specific operating parameters.

Enable or disable alarms and to select alarm severity.

Reset all operating parameters to factory settings.

42 and 43

Set to Factory Dflts

Observe the following when configuring a system:

•

Configure settings in the order specified in Table 17. The System Settings must be configured before the LTU

and NTU Interface settings. Changing System Settings can clear values configured in LTU and NTU Interface

settings.

•

When using a UTU as an LTU, change the Local Unit Role for the unit using the Config System Settings

menu. Note that changing the Local Unit Role of a UTU causes the unit to reset and the LEDs to cycle.

When the HDSL units are reset or cycle power, the date field is preserved but the time field is not preserved.

Set the time using the Config Date and Time display. When the HDSL units are turned off and left off for a

longer period of time (more than 24 hours, for example), set both the date and time using the Config Date and

Time display since neither value was preserved.

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System Configuration

Configure Terminal Settings

The console screens use line drawing characters to enclose menu selections and dialog boxes.

Because not all maintenance terminals and terminal emulation programs adhere consistently to

the VT100 standard, the HDSL card allows you to adjust the display for best results on a given

terminal.

1Type T at the Config drop-down menu to display the Config Terminal Settings menu (Figure 17).

Figure 17. Config Terminal Settings Menu

Press the or key to highlight the selection that matches the terminal configuration (which should also

↑

↓

be the selection most clearly displayed on the monitor). The choices are:

•

VT100

Windows Terminal

IBM PC

ASCII

Press ENTER to confirm the selection.

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Configure Date and Time

1Type D at the Config drop-down menu to display the Config Date and Time menu (Figure 18).

Figure 18. Config Date and Time Menu

Type the date in DD/MM/YY format, then press ENTER .

Type the time in HH : MM format (24-hour clock), then press ENTER .

The system date and time appear on the status line of the console screen and is useful when viewing alarm

histories. When the HDSL units are reset or cycle power, the values in the date field are saved but the values in

the time field are reset to 00 : 00. Set the time using the Config Date and Time display. When the HDSL units are

turned off and left off for more than 24 hours, both the date and time must be set using the Config Date and Time

display (neither value is saved after 24 hours).

Changing the date and time after the system has been running will not automatically clear alarm

histories. This must be done after setting the date and time. (See “Clear History Screens” on

page 58.)

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System Configuration

Change Password

1Type P at the Config drop-down menu to display the Config Change Password menu (Figure 19).

Figure 19. Config Change Password Menu

Enter a new password (up to eight characters) to change the current system password.

Retype the new password (up to eight characters) to confirm its accuracy.

When changing the default password ( ENTER ), save the new password in a secure place. A

password cannot be recovered if it is forgotten. Contact ADC if assistance is needed (see

“Product Support” on page 69).

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Configure Circuit ID

The circuit ID appears on the status line of each console screen. Choose a unique circuit ID for each HDSL card.

1Type C at the Config drop-down menu to display the Config Circuit ID menu (Figure 20).

Figure 20. Config Circuit ID Menu

2Type a new circuit ID (up to 23 characters) to change the current circuit ID.

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System Configuration

Configure System Settings

Use the System Settings menu to select and configure system-wide operating parameters. Configure system

settings as follows:

Type S at the Config drop-down menu to display the Config System Settings menu. Figure 21 shows the

Config System Settings menu for the UTU-701C and ETU-751C.

Figure 21. Config System Settings Menu

Do the following for each system option setting to be changed. Table 18 on page 38 describes the fields and

options displayed in the Config System Settings menu. The settings in boldface type are factory default

settings.

•

Use the or the key to select the sub-menu item to be changed.

↑

↓

Use the SPACEBAR to toggle to the appropriate option or type in the correct information, then press

ENTER to select the option.

When using a UTU or ETU as an LTU, configure the Local Unit Role option first.

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Table 18. Fields and Options Displayed in Config System Settings Menu

Field and Options

Description

Application Mode ^(a)

SINGLE

System uses a single-pair of twisted copper wire to transport data. For more information, see

“Rate Selectable Application Modes and Options” on page 14.

HDSL Rate Mode ^(a)

Selects the mode with which the HDSL payload rate will be determined.

MANUAL

HDSL payload rate is set by number of time slots entered for the HDSL Payload Rate option.^(b)

Each time slot is 64 kbps.

HDSL Payload Rate ^(c)

Selects the rate and reach at which data will be transported (see Table 2, “Transmission

Ranges with 0 db ETSI Noise,” on page 3).

256kbps/4

Typing a time slot value of 1 through 32 and pressing ENTER sets and displays the HDSL

payload rate. ^{(d) (e)}

Remote Console Access

Selects whether a maintenance terminal connected to an NTU can affect system changes or

is Read-only. This field may be set only at the LTU.

ALLOWED

NTU console screens can be used to configure the system.

BLOCKED

NTU console screens are read-only. The LOC and REM pushbuttons on the NTU are also

disabled. System changes can only be made from the LTU.

Local Unit Role

Configures UTU or ETU as LTU (master) or NTU (slave). The default configuration is NTU

(slave). Note that changing the Local Unit Role of a UTU or ETU causes the unit to reset and

the LEDs to cycle.

LTU

Configures UTU or ETU as LTU (master). The LTU-configured rate selectable UTU/ETU does

not provide line power to other HDSL units.

NTU

Configures UTU or ETU as NTU (slave). The NTU-configured rate selectable UTU/ETU does not

provide line power to other HDSL units.

(a) SINGLE is the only application mode and MANUAL is the only rate mode.

(b) UTU-701C and ETU-751C have 32 time slots available for HDSL payload rates of 256 kbps to 2048 kbps.

(c) An HDSL Payload Rate of 64 kbps (1 time slot) is transmitted at 256 kbps (see “G.704 Framing and Rate Selectable HDSL” on page 17).

(d) Payload rates are displayed in the Config LTU and Config NTU Interface menus as Data Rate/# of TSs (data rate/number of time slots).

(e) Changing the HDSL Payload Rate or Local Unit Role causes the unit to reset and the LEDs to cycle. Log on again by pressing the

SPACEBAR several times.

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System Configuration

Configure LTU and NTU Interfaces

Select and configure the LTU- and NTU-related operating parameters as follows:

Type one of the following at the Config drop-down menu to display the Config LTU or NTU Interface menu:

•

L for the Config LTU Interface menu (Figure 22).

N for the Config NTU Interface menu (Figure 23).

Figure 22. Config LTU Interface Menu

Figure 23. Config NTU Interface Menu

The Data Rate/# of TSs and Beginning TS parameters in the Config LTU and NTU Interface

menus are read-only displays. The Data Rate/# of TSs value is set in the Config System

Settings menu as the “HDSL Payload Rate” (See Figure 21 on page 37). The Beginning TS

value is 0 with 32 time slots selected (unstructured mode) and 1 when less than 32 time slots

are selected (structured mode).

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Do the following for each interface option to be changed. Table 19 describes the fields and options displayed

in the Config LTU and Config NTU Interface menus.

•

Use the or the key to select the sub-menu item to be changed.

↑

↓

Use the SPACEBAR to toggle to the appropriate option or type in the correct information, then press

ENTER to select the option.

The settings in boldface type in Table 16 are factory default settings.

Table 19. Fields and Options in Displayed Config LTU and Config NTU Interface Menus

Field and Options

Description

Primary Timing Source

Selects the clock source for the HDSL transmit direction.

External 2.048 MHz clock (UTU-701C only)

Input E1 clock

EXT

G.703

G.703 Port

CRC-4 Mode

DIS

Cyclic Redundancy Check (CRC) to detect errors in transmitted data. Available only when less

than 32 time slots are selected (places unit in structured application mode).

CRC-4 mode is disabled. CRC-4 mode is not available (N/A) when 32 time slots are selected

(places unit in unstructured application mode).

ENA

The input G.703 signal is monitored for CRC-4 multiframe errors. A new CRC-4 code is output

for use at the remote unit. Detected errors are displayed in the Monitor LTU and NTU Interface

screens.

PASSTHRU

Idle Code

All time slot 0 bits are passed unchanged to the remote unit. Useful when detection of CRC-4

errors is performed by customer equipment.

User inputs the idle pattern (from 00 to FF) transmitted in unused time slots from LTU or NTU

G.703 port. Factory default setting is FF.

Data Rate/# of TSs

Read-only display of indicated HDSL data rate and corresponding number of time slots (TSs)

as set with HDSL Payload Rate option in the Config System Settings menu (See “G.704

Framing and Rate Selectable HDSL” on page 17). Default setting is 256kbps/4.

Beginning TS

Read-only display of beginning time slot. This setting is 0 (zero) in the structured mode and

one (1) in the unstructured mode.

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System Configuration

Configure Alarms

Use the Config Alarms menu to configure LTU and NTU Interface alarm parameters and the HDSL span alarm

parameters. When setting alarm parameters for LTUs and NTUs, keep the following rules in mind:

•

Disabled alarms do not cause LED indications and are not stored in history. Console screen menu alarm

history reports are not generated.

Minor alarms cause LED indications and are stored in history. Console screen menu alarm history reports are

generated.

Major alarms cause LED indications, actuate the line unit alarm relay, and are stored in history. Console

screen menu alarm history reports are generated.

•

The LTU alarm relay activates in response to a major alarm at the LTU only.

The NTU alarm relay activates in response to a major alarm at the NTU only.

For the duration of a major alarm, the line unit alarm relay contacts are connected as follows:

–

The C (Common) contact is connected to the NO (Normally Open) contact.

The NC (Normally Closed) contact is floating.

•

With no alarm, the C and NC contacts are connected, and the NO contact remains floating.

The line unit alarm relay operates in a fail-safe mode. When no power is applied to the line unit, the alarm

relay C and NO contacts are connected with the NC contact floating.

Type A at the Config drop-down menu to display the Config Alarms menu (Figure 24).

Figure 24. Config Alarms Menu

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Alarms for LTU and NTU Interface

Type one of the following at the Config Alarms drop-down menu to display the Config Alarms LTU or Config

Alarms NTU Interface menu:

•

L for the Config Alarms LTU Interface menu (Figure 25)

N for the Config Alarms NTU Interface menu (Figure 26)

Figure 25. Config Alarms LTU Interface Menu

Figure 26. Config Alarms NTU Interface Menu

Do the following for each interface option to be changed. The fields displayed in the Config Alarms LTU and

Config Alarms NTU Interface menus are described in Table 20.

•

Use the or key to select the sub-menu item to be changed.

↑

↓

Use the SPACEBAR to toggle to the appropriate option or type in the correct information, then press

ENTER to select the option.

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Table 20. Fields Displayed in Config Alarms LTU and Config Alarms NTU Interface Menus

Field

Description

Loss of Signal (LOS)

Loss of signal at the G.703 input.

Loss of Frame Alignment (LFA)

Loss of frame alignment at the G.703 input.

Receive Alarm Indication Signal (AIS) Alarm indication signal (unframed all ones) received at the G.703 input.

Remote Alarm Indication Signal (RAI) Remote alarm indication signal received at the G.703 input (through A-bit).

Loss of Clock (LOC)

Applies to loss of external clock when EXT timing is used. The external clock was lost for

the previous second. This alarm is reset when the clock is active again.

HDSL Span 1 Alarms

Type 1 at the Config Alarms drop-down menu to display the Config Alarms HDSL Span 1 menu (Figure 27).

Figure 27. Config Alarms HDSL Span 1 Menu

Do the following for each interface option to be changed. The fields displayed in the Config Alarms HDSL

Span 1 menu are described in Table 21 on page 44.

•

Use the or

key to select the sub-menu item to be changed.

↑

↓

Use the SPACEBAR to toggle to the appropriate option or type in the correct information, then press

ENTER to select the option.

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Table 21. Fields Displayed in Config Alarms HDSL Span 1 Menu

Field

Description

Margin (MAR)

Selects whether the alarm is disabled (DIS), or enabled and reported as a Minor (MIN) or Major

(MAJ) Alarm when the margin falls below the threshold. This indicates a potential degradation of

line quality. If an alarm is configured as a protection switch (PSW), it will behave as a Major (MAJ)

Alarm, and cause protection switching to engage.

Margin Threshold

Selects the margin alarm threshold (from 0 dB to 15 dB) for all four margin measurements of the

span.

Errored Seconds (ES)

24 HR ES Threshold

Loss of Sync Word (LOSW)

Selects whether the alarm is disabled (DIS), or enabled and reported as a Minor (MIN) or Major

(MAJ) Alarm when 24-hour ES count exceeds the threshold.

Selects the errored seconds threshold (0 to 255) for all four errored seconds measurements of the

span measured over a 24-hour period.

Selects whether the alarm is disabled (DIS), or enabled and reported as a Minor (MIN) or Major

(MAJ) Alarm when the LOSW condition (HDSL loop down) occurs.

Power Feed Open

Power Feed Short

Not supported. These units do not supply power to other units.

SET TO FACTORY DEFAULTS

Set to Factory Dflts is the screen from which all operating options can be reset to the ADC factory defaults.

Type F at the Config drop-down menu to display the Set to Factory Dflts screen (Figure 28).

Figure 28. Set to Factory Defaults Screen

Press ENTER to reset value to factory defaults. A confirmation message appears at the bottom of the display:

SETTING FACTORY DEFAULTS ... SERVICE *WILL* BE INTERRUPTED! ARE YOU SURE(Y/N)?

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Do one of the following:

•

Type N to keep the current settings.

Type Y to reset values to factory defaults. The system resets and both LTU and NTU units go through

their respective synchronization processes. If loops are down or are in update mode while Set to Factory

Dflts is enabled, only the local unit will restart. If the loops are up, both the LTU and NTU will restart.

The factory default system settings are listed in Table 22.

Table 22. Factory Default System Settings

Operating Option

Default Setting

System Settings

Application Mode

SINGLE

HDSL Rate Mode

MANUAL

HDSL Payload Rate

Remote Console Access

Protect Switch Command

Local Unit Role

256kbps/4

ALLOWED

Not supported on these units.

NTU

LTU/NTU Interface

G,703 port

Interface Type

Data Rate/# of TSs

Beginning TS

G.703

256 / 4

0 (structured mode)

1 (unstructured mode)

Alarms LTU/NTU Interface

Loss of Clock (LOC)

Alarms HDSL Spans

Margin (MAR)

MIN (Minor)

Margin Threshold

Errored Seconds (ES)

24 Hour ES Threshold

Loss of Sync Word (LOSW)

Power Feed Open (PFO)

Power Feed Short (PFS)

MIN (Minor)

MAJ (Major)

Not supported on these units.

LOGGING OFF

If the maintenance terminal must be left unattended for any length of time, log off until work resumes. This

prevents unauthorized persons from inadvertently changing operating parameters.

Log off by choosing Quit from the menu bar or by disconnecting the cable connecting the maintenance terminal

to the line or desktop unit. Automatic log off occurs after 20 minutes of keyboard inactivity.

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Viewing Status

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VIEWING STATUS

The following sections describe the screens that display status and system information, such as current alarm

status, performance history, product, and configuration information.

View status using a maintenance terminal or PC running a terminal emulation program connected to the V.24

(RS-232) console port. See page 25 for instructions on connecting a maintenance terminal or PC.

MAIN CONSOLE SCREEN

The Main console screen displays a summary of LTU and NTU circuit configuration, performance statistics, and

alarm status for each interface in the circuit.

Type M to display the Main console screen (Figure 29). The screen shown in Figure 29 is a display of the LTU

and NTU in the single-pair application. The numbered fields are described in Table 23.

Figure 29. Main Console Screen

Table 23. Reading the Main Console Screen

Field

Description

Shows performance and alarms for the LTU user interface.

Shows performance and alarms for the LTU HDSL interface.

Shows performance and alarms for the NTU HDSL interface.

Shows performance and alarms for the NTU user interface.

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Viewing Status

Table 24 describes the fields displayed on the Main console screen.

Table 24. Fields Displayed in Main Console Screen

Description

Field

Circuit Configuration

Indicates the interface standard for G.703 data port.

Indicates the number of time slots (n) mapped to the G.703 interface.

Indicates the primary source the unit uses for clock synchronization:

External 2.048 MHz clock.

G.703

n TS

Timing

EXT

G.703

G.703 port receive clock.

Application mode

Indicates that the Single Pair (SINGLE) application mode is in effect.

Performance

MAR1

Displays the Margin value for each HDSL interface or displays link status (SIG, ACQ, etc.) if the link

is not up.

MAR2

ES1

Reserved

Displays the Errored Seconds (ES) counts for each HDSL interface. The counts are for the latest

24-hour period, calculated as the sum of the counts in the previous 95 15-minute intervals, plus

the count in the current 15-minute interval.

ES2

Reserved

Alarms

The Alarms field displays a list of all active alarms at each LTU/NTU and HDSL interface.

Possible LTU/NTU Interface Alarms

Loss of Signal (LOS)

Loss of signal at the G.703 input.

Loss of Frame Alignment (LFA) Loss of frame alignment at the G.703 input.

Receive Alarm Indication

Signal (AIS)

Alarm indication signal (unframed all ones) received at the G.703 input.

Remote Alarm Indication

Signal (RAI)

Remote alarm indication signal received at the G.703 input (through A-bit).

Loss of Clock (LOC)

Applies to loss of external clock when EXT timing is used. The external clock was lost for the

previous second. This alarm is reset when the clock is active again.

Possible HDSL alarms

Margin (MAR)

Margin has fallen below threshold set for the HDSL interface.

Errored Seconds (ES)

Loss of Sync Word (LOSW)

Errored seconds count has exceeded threshold set for the HDSL interface.

Loss of sync word at the HDSL interface. Remains active during restart, but not a cold start.

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Viewing Status

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MONITOR MENU

The Monitor menu contains the following options:

•

LTU Interface screen that displays the 24 hour and cumulative count of errors at the LTU G.703 port.

NTU Interface screen that displays the 24 hour and cumulative count of errors at the NTU G.703 port.

HDSL Span 1 screen that displays the circuit performance and 24-hour error counts at the HDSL span 1

interface.

Type 0 at the console screen to display the Monitor menu (Figure 30).

Figure 30. Monitor Menu

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Monitor LTU Interface Screen

At the Monitor menu (Figure 30), type L to display the Monitor LTU Interface screen (Figure 31). Table 25

describes the fields displayed in the Monitor LTU and Monitor NTU Interface screens.

Figure 31. Monitor LTU Interface Screen

Table 25. Fields Displayed in Monitor LTU and Monitor NTU Interface Screens

Field

Description

G.703 Port

Errored Seconds (ES)

24 Hour Count

The number of one-second intervals in which at least one bipolar violation (BPV) or one CRC-4

error was detected at the G.703 input port during the last 24hours.

SeverelyErroredSeconds(SES) The number of one second intervals during which a Loss of Signal (LOS), an Alarm Indication

24 Hour Count

Signal (AIS), or a Loss of Frame (or CRC-4 Multiframe) Alignment (LFA) occurred at the incoming

port.

Unavailable Seconds (UAS)

24 Hour Count

The number of seconds that G.703 input signals were unavailable during the last 24 hours. After

ten consecutive SESs, the system is deemed unavailable, and the current UAS counter begins

counting from ten. After ten consecutive non-SESs, the system returns to availability, and the ten

counts representing the non-SESs are removed from the UAS counter.

CRC Errored Seconds

(Cumulative)

The number of CRC-4 errors that were detected at the G.703 port since error counters were last

cleared. Turning CRC-4 mode on (ENA) and off (DIS) clears the CRC-4 error counter.

Bipolar Violation Seconds

(Cumulative)

The number of seconds in which bipolar violations were detected at the G.703 port since error

counters were last cleared.

Clear 24-Hour History

The date and time that the 24-hour histories were last cleared are displayed here. Enable this

function by pressing L or ENTER to clear all 24-hour history counters (including HDSL). This

action must be confirmed by pressing Y .

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Viewing Status

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Monitor NTU Interface Screen

At the Monitor menu (Figure 30), type N to display the Monitor NTU Interface screen (Figure 32).

The fields displayed in the Monitor NTU Interface screen are identical to those displayed in the Monitor LTU

Interface screen (see Table 25 on page 49).

Figure 32. Monitor NTU Interface Screen

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Viewing Status

Monitor HDSL Span 1 Screen

The HDSL Span 1 screen (Figure 33) displays the circuit performance and 24-hour error counts at the HDSL span

1 interface. A span is defined as the link between two HDSL units (that is, from an LTU to an NTU) which, in this

case, is comprised of a single loop (that is, one twisted-copper pair). The values under the LTU-1 column represent

HDSL Span 1 as measured by the LTU. The values under the NTU-1 column represent HDSL Span 1 as measured

by the NTU.

At the Monitor menu (Figure 30), type 1 to select the Monitor HDSL Span 1 screen (Figure 33). The fields

displayed in the Monitor HDSL Span 1 screen are described in Table 26.

Figure 33. Monitor HDSL Span 1 Screen

Table 26. Fields in Monitor HDSL Span 1 Screen

Field

Description

Current Margin (dB) (MAR)

Indicates the excess signal-to-noise ratio relative to a 10^-7bit error rate. The normal range of

a typical margin is from 6 to 22 dB, with a value of 6 dB corresponding to a predicted BER of 10^-10

Low Margin (dB)

High Margin (dB)

Indicates the lowest margin since startup or the last 24-hour history clear.

Indicates the highest margin since startup or the last 24-hour history clear.

Pulse Attenuation (dB)

Indicates the attenuation of the 2B1Q pulse from the distant end. This value is related to the cable

pair’s loss at 292 KHz. The normal range of pulse attenuation is from 1 to 41 dB.

Errored Seconds (ES)

The number of one-second intervals in which at least one HDSL CRC-6 error or loss of Sync Word

(LOSW) was detected on the HDSL span during the last 24 hours.

Unavailable Seconds (UAS)

HDSL Tip/Ring Reversal

The number of seconds that the HDSL span was down during the last 24 hours.

Indicates whether the two conductors of the HDSL span are correctly connected or have been

interchanged. The system automatically compensates for an interchange of wire leads.

Clear 24-Hour History

The date and time that the 24-hour histories were last cleared are displayed here. Enable this

function by pressing L or ENTER to clear all 24-hour history counters (including HDSL). This

action must be confirmed by pressing Y .

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Viewing Status

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HISTORY MENU

The History menu contains the following status screens:

•

LTU/NTU Interfaces that display alarm performance history for the LTU and NTU interface.

HDSL Span that displays 24-hour, 7-day, and alarm performance history for the HDSL span.

The History menu also provides the option to clear the 24-hour, 7-day, and alarm history screens. This option is

described on page 58.

Type H to select the History menu (Figure 34).

Figure 34. History Menu

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Viewing Status

LTU and NTU Interface Performance History Screens

At the History menu (Figure 34), type L to select the History LTU Interface menu (Figure 35).

Figure 35. History LTU Interface Menu

At the History menu (Figure 34), type N to select the History NTU Interface menu (Figure 36).

Figure 36. History NTU Interface Menu

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Viewing Status

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Only the Alarm History screen is available for the LTU and NTU interfaces. The 24 Hour and

7 Day History screens, as well as the Alarm History screen, are available for HDSL Span 1.

LTU and NTU Interface Alarm History Screens

At the History LTU or History NTU Interface menu, type the A key to select an Alarm History status screen. The

LTU Interface Alarm History screen is shown in Figure 37.

Figure 37. LTU Interface Alarm History Screen

Table 27 describes the four columns of data contained in the LTU Interface and NTU Interface Alarm History

screens. If no alarm has occurred since the last alarms were cleared, the message "No alarms reported" displays

on the appropriate line for each alarm.

Table 27. LTU Interface and NTU Interface Alarm History Data

Column

Description

Alarm

First

Type of alarm: LOS, LFA, AIS, RAI, and LOC

Date and time the alarm first occurred

Last

Date and time the alarm last occurred

Count

Number of times the alarm has occurred since the alarms were last cleared

(a) Not available on Nx64k serial data port units.

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Viewing Status

HDSL Span Performance History Screens

At the History menu (Figure 34), type 1 to select the History HDSL Span 1 menu (Figure 38).

Figure 38. History HDSL Span 1 Menu

The History HDSL Span 1 menu contains three viewing options:

•

24 Hour History

7 Day History

Alarm History

HDSL Span 1 24 Hour History Screen

At the History HDSL Span 1 menu (Figure 38), type H to select the 24 Hour History screen for HDSL

Span 1 (Figure 39).

Figure 39. 24 Hour History Screen for HDSL Span 1

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The 24 Hour History screen for HDSL Span 1 contains three columns of data that show (from left to right) the:

•

Starting time of each 15-minute interval.

Number of ES/UAS at the LTU end of the HDSL span (LTU-1) for each interval. A dash (-) represents a count

of zero.

•

Number of ES/UAS at the NTU end of the HDSL span (NTU-1) for each interval. A dash (-) represents a

count of zero.

The entire display consists of six screens, each showing sixteen 15-minute intervals (4 hours) of performance

history.

Type CTRL + R or CTRL + C to display the previous or next screen in the sequence, respectively. Press the or

↑

key to scroll the screen up or down by one line, respectively.

↓

7 Day HDSL Span 1 Performance History Screens

At the History HDSL Span 1 menu (Figure 38), type D to select the 7 Day History status screen for HDSL

Span 1 (Figure 40).

Figure 40. 7 Day History Status Screen for HDSL Span 1

Each HDSL Span 7-Day History screen contains three columns of data showing (from left to right) the:

•

date of each completed day within the 7-day interval

number of ES/UAS at the LTU end of the HDSL span (LTU-1) for each interval. A dash (-) represents a count

of zero

•

number of ES/UAS at the NTU end of the HDSL span (NTU-1) for each interval. A dash (-) represents a count

of zero

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Viewing Status

HDSL Span 1 Alarm History Screens

At the History HDSL Span 1 menu (Figure 38), type A to select the Alarm History status screen for HDSL

Span 1 (Figure 41).

Figure 41. Alarm History Status Screen for HDSL Span 1

Table 28 describes the four columns of data contained in each HDSL Span Alarm History screen.

Table 28. HDSL Span Alarm History Data

Column

Description

Alarm

Type of alarm: MAR1 (Margin Span 1), ES1 (Errored Seconds Span 1), LOSW1 (Loss

of Sync Word Span 1), PFO1 ^(a)(Power Feed Open Span 1), PFS1 ^(a)(Power Feed Short

Span 1)

First

Date and time the alarm first occurred

Last

Date and time the alarm last occurred

Count

Number of times the alarm has occurred since the alarms were last cleared

(a) Not supported. These units do not supply power to other units.

If no alarm has occurred since the last alarms were cleared, the message "No alarms reported" displays on the

appropriate line for each alarm.

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Clear History Screens

Use the following options to clear the 24 Hour, 7 Day, or Alarm History status screens:

•

Clr 24 Hr Hist: clears all of the 24-hour history error counters

Clr 7 Day Hist: clears all of the 7-day history error counters

Clr Alarm Hist: clears all alarm history logs

To clear the status screens:

1Select the alarm history option to be cleared with the and keys, then press ENTER . The following confirmation

↑

↓

message displays:

ALL(24-HOUR,or7DAY,orALARM)HISTORIESWILLBECLEARED.CONTINUE(Y/N)?

2Do one of the following:

•

Type N to cancel the operation.

Type Y to clear the screen. Typing Y displays the following confirmation message:

24-HOURHISTORIESCLEARED

INVENTORY SCREEN

The Inventory screen permits tracking of the system's inventory, service, and revision state. Table 29 on page 59

describes the fields displayed in each Inventory screen. Type I to display the Inventory screen (Figure 42).

Figure 42. Inventory Screen

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Table 29. Inventory Screen Data

Field

Description

Displays the configuration of the LTU or NTU circuit.

Network Diagram

Product

Displays the model numbers of the LTU, NTU, and any doubler units that comprise the channel.

Displays the LTU, NTU, and doubler unit list numbers, which identify the particular unit versions.

Displays the LTU, NTU, and doubler unit hardware configuration level.

List #

H/W Cfg

Serial #

Displays the unique serial number of the LTU, NTU and any doubler units for inventory and service

tracking.

Manuf

Displays the date the LTU, NTU, and any doubler units were manufactured.

Displays the number of days the LTU, NTU, and any doubler units have been in operation.

Displays the ADC part number of the firmware.

Days Op

SW Part #

Chksum

S/W Rev

SW Date

Displays the checksum of the LTU, NTU, and doubler unit proms.

Displays the currently installed firmware version level of the LTU, NTU and any doubler units.

Displays the date that the firmware was released.

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Testing

700-701-100-02

TESTING

From the main console screen (Figure 29), type T to display the Test menu from which you can set and run

loopback and BER tests (Figure 43).

Figure 43. Test Menu Screen

Table 30 on page 61 lists the Test menu options. Table 31 lists the fields displayed in the Bit Error Rate (BER)

section of the test menu.

Loopbacks remain active until the timeout elapses or the configuration changes. The loopback location and status

are indicated on the network diagram portion of the test menu, with "@@]"characters as follows:

•

Flashing reverse video for active loopbacks

Solid reverse video for disabled loopbacks

Front panel loopback (LPBK) LED indications are described in Table 4 on page 6. See page 19 for a description

of loopbacks.

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Testing

Table 30. Test Menu Options

Operating Option

Default Setting

Network Diagram

Lpbk Dir

Shows the loopback position and direction when the loopback is enabled and active.

Selects one of three loopback direction modes:

OFF

No loopbacks are active.

NETWORK

The loopback selected in Loopback Position is directed toward the network equipment connected to

the LTU.

CUSTOMER

The loopback selected in Loopback Position is directed toward the customer's equipment connected

to the NTU.

Lpbk Loop(s)

NONE

Selects the loops used in the loopback test:

Option not available with single-pair HDSL card.

Selects the possible loopback positions:

Lpbk Position

NONE

Option not available with single-pair HDSL card.

Selects one of three loopback timeouts:

Lpbk Timeout

NONE

Disables automatic timeout cancellation of all loopbacks.

Automatically cancels any loopback 20 minutes after initiation.

Automatically cancels any loopback 120 minutes after initiation.

120

Table 31. BER Section of Test Menu

Field

Description

BER Test

STOP

Selects the state of the BER test.

Terminates the current test and resumes normal transmission of user payload. Prior BER tests are

maintained for reference on the screen. STOP must be selected to terminate the BER test prior to exiting

the screen.

RESTART

Begins BER test. This disrupts user payload traffic and inserts a pseudo-random bit sequence (PRBS)

at the LTU toward the NTU. The actual pattern used is a 2x10¹⁵pattern as defined by reselecting this

option (pressing the ENTER key) while the test is running. This entry reinitiates the BER values and

restarts the test.

Det. Status

NOT ACTIVE

SYNCING

IN SYNC

Displays the current status of the BER detector at the LTU.

Displays while the BER is not running.

Indicates that the BER qualification period is in progress (128 received bits are compared to the PRBS).

Indicates that the BER test is in progress. The BER meter accumulates errors once per test interval (16

seconds). In a high bit error environment the test interval is shortened and the BER meter is updated

every second.

Test Time

Bit Errors

Displays the elapsed test time for the BER test.

Displays the number of bits received that did not match the PRBS pattern. This field is updated every

30 seconds, with a maximum value of 255 per update.

BER

Displays the Bit Error Rate computer for the current test. This field is updated very 16 seconds, as is

displayed in exponential form. The lowest positive displayable value is 1x10^-11

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Firmware Download Utility

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FIRMWARE DOWNLOAD UTILITY

The Firmware Download Utility is a separate program and is not available from the console

screen menus.

This section describes the ETSI Firmware Download utility and how to use it to upgrade the line and desktop unit

firmware. The ETSI Firmware Download utility is a program you can run on a PC to download new firmware to

the LTU or NTU by connecting a standard RS-232 interface cable to the unit front panel V.24 console port. When

using the ETSI Firmware Download utility, follow these rules:

•

Make sure the destination unit where the new firmware is to be upgraded is correct before pressing the

ENTER key.

•

Do not disconnect the interface cable during the download process.

Do not abort the download once it has started.

Figure 44 shows the menu for the ETSI Firmware Download Utility. The upper area of the ETSI Firmware

Download Utility menu displays the configuration options, and the lower area displays messages during the

download process.

Figure 44. ETSI Firmware Download Utility Menu

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Firmware Download Utility

Initiate the Download and Navigate the Menus

To initiate the download process, go to the DOS prompt and type: dnl. Table 32 describes ETSI Firmware User

Selectable Download Menu Options.

Table 32. ETSI Firmware User Selectable Download Menu Options

Option

Description

PORT

Provides support for two communication ports:

COM1 at Hex 3F8

COM2 at HEX 2F8

SPEED

Supports Standard (9600 bit/s), Medium (19.2K kbps), Fast (38.4 kbps), Faster

(57.6 kbps) and TURBO (115.2 kbps) speeds. The number of data bits is fixed at 8,

with no parity and 1 stop bit.

DESTINATION

The destination can be set to one of the following:

LOCAL (unit connected to the maintenance terminal)

LTU (LTU unit)

NTU (NTU unit)

NTU2 (NTU2 unit, in case of point-to-multipoint download)

REGENERATOR1

REGENERATOR2

FILE NAME^(a)

Enter the firmware download file name.

(a) FILE NAME can be changed by pressing the DEL key, then typing the new file name. Once in the FILE NAME field,

the download setup can be aborted only by typing CTRL + C . After typing the new file name, press the ENTER

key to start the download sequence.

Table 33 describes how to navigate within the ETSI Firmware Download menu.

Table 33. Navigating the ETSI Firmware Download Menu

Keystroke

Result

PAGE UP or PAGE DOWN

Change a setting, with the exception of the FILE NAME setting.

Move from field to field.

and

↑

↓

Abort setup and returns to the DOS prompt.

Start the download process.

ESC

ENTER

Download progress messages include:

•

program size

download time

program checksum

line-unit response

time out message (posted if the line unit does not response within five seconds; when this occurs, the

download operation is aborted).

While downloading, the line or desktop unit front panel LEDs all light, then a binary count sequence indicates

progress. When downloading is complete, the unit resets.

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Reference Information

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REFERENCE INFORMATION

This section lists the pinouts for the ETU-751C rear panel connectors and the ECA-80x connector adapters.

ETU-751C CONNECTOR PINOUTS

The pinouts for the ETU-751C rear panel connectors are listed in Table 34 and Table 35.

Table 34. D9F HDSL Line Connector Pinouts

Pin ^(a)

Signal

Description

HDSL_RING_A

HDSL_TIP_A

HDSL_RING_B

HDSL_TIP_B

HDSL Loop 1 (Ring)

HDSL Loop 1 (Tip)

HDSL Loop 2 (Ring)

HDSL Loop 2 (Tip)

(a) All other pins are not used. Pins 1 and 6 not used on single-pair HDSL cards.

Table 35. D25F Data Port Connector Pinouts

Pin ^(a)

Signal Name

V.35

V.36

X.21

DCE Input/Output

Signal Ground

Send Data

SD_A

SD_B

SD_A

SD_B

T_A

T_B

Input

Receive Data

RD_A

RD_B

RD_A

RD_B

R_A

R_B

Output

Input

Send Timing

SCT_A

SCT_B

ST_A

ST_B

S_A

S_B

Receive Timing

Terminal Timing

Clear to Send

RCT_A

RCT_B

RT_A

RT_B

not used

SCTE_A

SCTE_B

TT_A

TT_B

TT_A

TT_B

CTS

not used

Output

Data Set Ready

Received Line Signal Detect

DSR

RLSD

DSR

RLSD

not used

I_A

I_B

Test Mode

not used

Output

Input

Request to Send

RTS

C_A

C_B

Data Terminal Ready

DTR

not used

Input

Local Loopback

not used

Input

Remote Loopback

(a) All other pins are not used.

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Reference Information

ECA-800 CONNECTOR ADAPTER (DB25M TO M34F FOR V.35)

The ECA-800 connector adapter (Figure 45) converts the DB25F data port connector on the desktop unit rear

panel to a standard V.35 34-pin female connector. Table 36 lists the ECA-800 pinouts.

Figure 45. ECA-800 DB25M to M34F (V.35) Connector Adapter, Part Number 150-1470-01

Table 36. ECA-800 DB25M to M34F (V.35) Connector Adapter Pinouts

DB25M Connector

Signal

M34F (V.35) Connector

Signal

Shield

Send Data A

Frame ground

Send Data A

Send Data B

Receive Data A

Receive Data B

Request to Send A

Clear to Send A

Data Set Ready A

Data Terminal Ready A

Signal Ground

Request to Send

Clear to Send

Data Set Ready

Data Terminal Ready

Signal Ground

Received Line Signal Detect A

Send Timing A

Received Line Signal Detect

Serial Clock Transmit A

Serial Clock Transmit B

Serial Clock Receive A

Serial Clock Receive B

Serial Clock Transmit External A

Serial Clock Transmit External B

Local Loopback

Send Timing B

Receive Timing A

Receive Timing B

Terminal Timing A

Terminal Timing B

Local Loopback

Remote Loopback

Test Mode

Remote Loopback

Test Mode

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ECA-801 CONNECTOR ADAPTER (DB25M TO DB15F FOR X.21)

The ECA-801 connector adapter (Figure 46) converts the DB25F data port connector on the desktop unit rear

panel to a standard X.21 15-pin female connector. Table 37 lists the ECA-801 pinouts.

Figure 46. ECA-801 D25M to DB15F (X.21) Connector Adapter, Part Number 150-1470-01

Table 37. ECA-801 DB25M to DB15F (X.21) Connector Adapter Pinouts

DB25M Connector

Signal

DB15F (X.21) Connector

Signal

Send Data A

Send Data B

Send Data A

Send Data B

Receive Data A

Receive Data B

Request to Send A

Request to Send B

Signal Ground

Control A

Control B

Signal Ground

Receive Line Signal Detect A

Receive Line Signal Detect B

Receive Timing A

Receive Timing B

Terminal Timing A

Terminal Timing B

Indication A

Indication B

Signal Element Timing A

Signal Element Timing B

DTE Signal Element Timing A

ECA-802 CONNECTOR ADAPTER (DB9M TO RJ-45)

The ECA-802 connector adapter (Figure 47) converts the DB9F HDSL line connector on the desktop unit rear

panel to an RJ-45 modular style connector. Table 38 lists the ECA-802 pinouts.

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Reference Information

Figure 47. ECA-802 DB9M to RJ-45 Connector Adapter, Part Number 150-1472-01

Table 38. ECA-802 DB9M to RJ-45 Connector Adapter Pinouts

DB9M Connector

Signal

RJ-45 Connector

Signal

Pin ^(a)Pin ^(a)

HDSL Loop 1 (Ring)

HDSL Loop 1 (Tip)

HDSL Loop 2 (Ring)

HDSL Loop 2 (Tip)

HDSL Loop 1 (Ring)

HDSL Loop 1 (Tip)

HDSL Loop 2 (Ring)

HDSL Loop 2 (Tip)

(a) Pins 1, 6, 4, and 5 not used on single-pair HDSL cards.

UTU-701 and ETU-751 List 1

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Reference Information

700-701-100-02

ECA-804 CONNECTOR ADAPTER (DB9M TO FOUR-POSITION

TERMINAL BLOCK)

The ECA-804 connector adapter (Figure 48) converts the DB9F HDSL line connector on the desktop unit rear

panel to a four-position terminal-block style connector. Table 39 lists the ECA-804 pinouts.

Figure 48. ECA-804 DB9M to Four-Position Terminal Block Connector Adapter, Part Number 150-1474-01

Table 39. ECA-804 DB9M to Four-Position Terminal Block Connector Adapter Pinouts

Four-Position Terminal Block

D9M Connector

Signal

Pin ^(a)

HDSL Loop 1 (Ring)

HDSL Loop 1 (Tip)

HDSL Loop 2 (Ring)

HDSL Loop 2 (Tip)

HDSL Loop 1 (Ring)

HDSL Loop 1 (Tip)

HDSL Loop 2 (Ring)

HDSL Loop 2 (Tip)

(a) Pins 3, 4, 1, and 6 not used on single-pair HDSL cards.

August 9, 2002

UTU-701 and ETU-751 List 1

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700-701-100-02

Product Support

PRODUCT SUPPORT

ADC Customer Service Group provides expert pre-sales and post-sales support and training for all its products.

Technical support is available 24 hours a day, 7 days a week by contacting the ADC Technical Assistance Center

at the number listed below.

•

Quotation Proposals

Sales Assistance

800.366.3891 ext. 73000 (USA and

Canada) or

Ordering and Delivery

General Product Information

952.917.3000

Fax: 952.917.3237

•

Complete Solutions (from concept to

installation)

Systems Integration

800.366.3891, ext. 73000 (USA and

Canada) or

•

Network Design and Integration Testing

System Turn-Up and Testing

952.917.3000

Network Monitoring (upstream or downstream)

Power Monitoring and Remote Surveillance

Service/Maintenance Agreements

Systems Operation

•

Technical Information

ADC Technical Assistance Center

800.638.0031 (USA and Canada) or

714.730.3222

Fax: 714.730.2400

Email: [email protected]

System/Network Configuration

Product Specification and Application

Training (product-specific)

Installation and Operation Assistance

Troubleshooting and Repair/Field Assistance

•

www.adc.com/Knowledge_Base/index.jsp

www.adc.com/library1/

Online Technical Support

Online Technical Publications

Product Return Department

800.366.3891 ext. 73748 (USA and

Canada) or

ADC Return Material Authorization (RMA)

number and instructions must be obtained

before returning products.

952.917.3748

Fax: 952.917.3237

Email: repair&[email protected]

All 800 lines are toll-free in the USA and Canada.

UTU-701 and ETU-751 List 1

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Abbreviations

700-701-100-02

ABBREVIATIONS

AIS

Alarm Indication Signal

Alarm

Local Loopback

Local

ALM

ANSI

AWG

BER

LOC

LOSW

LPBK

LTU

M34F

MAR

Mbps

MHz

American National Standards Institute

American Wire Gage

Bit Error Rate

Loss of Clock

Loss of Sync Word

Loopback

Centigrade

Line Termination Unit

M-type 34-pin Female Connector

Margin

COM

CRC

CTS

D15F

D25F

D9F

Communication

Cyclic Redundancy Check

Clear To Send

Megabits per second

Megahertz

D-type 15-pin Female Connector

D-type 25-pin Female Connector

D-type 9-pin Female Connector

Decibel

millimeter

Normally Closed

Normally Open

Network Termination Unit

DCE

Det

Data Communications Equipment

Detector

NTU

NVRAM Non-volatile Random Access Memory

dnl

Download

Nx64k

Number (N) of 64 kbps DS0 time slots

mapped to a data port.

DS0

Digital Service, Level 0 (64 kbps)

Data Set Ready

Operation

DSR

DTE

DTR

EMC

EMI

EMS

EMU

PFO

PFS

Power Feed Open

Power Feed Short

pulse per minute

Pseudorandom Bit Sequence

Random Access Memory

Remote

Data Terminal Equipment

Data Terminal Ready

ppm

PRBS

RAM

REM

Electromagnetic Compliance

Electromagnetic Interference

Exchange Office Management Shelf

Exchange Office Management Unit

Errored Second

Remote Loopback

Received Line Signal Detector

Ready to Send

RLSD

RTS

S/W

ETR

ETSI

ETSI Technical Report

European Telecommunications Standards

Institute

Software

ETU

EXT

H/W

HDSL

ETSI Termination Unit

External

Transmit Data

Send Timing

Hardware

SYNC

Synchronization

Test Mode

High-bit-rate Digital Subscriber Line

Hertz

Terminal Timing

Unavailable Seconds

Universal Termination Unit

Volts

I/F

Interface

UAS

UTU

Identification

INT

kbps

Internal

kilobytes per second

kilometers

Vdc

VT100

Volts direct current

A terminal-emulation system

Watts

LED

Light Emitting Diode

August 9, 2002

UTU-701 and ETU-751 List 1

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CERTIFICATION AND WARRANTY

DIRECTIVE EN300 386-2 COMPLIANCE

To indicate compliance with EN300 386-2, these products have been affixed with the CE mark.

LIMITED WARRANTY

ADC DSL Systems, Incorporated (“ADC”) warrants that, for a period of sixty (60) months from the date of

shipment, the hardware portion of its products will be free of material defects and faulty workmanship under

normal use. ADC's obligation, under this warranty, is limited to replacing or repairing, at ADC's option, any such

hardware product which is returned during the 60-month warranty period per ADC's instructions and which

product is confirmed by ADC not to comply with the foregoing warranty.

ADC warrants that, for a period of 90 days from the date of purchase, the software furnished with its products will

operate substantially in accordance with the ADC published specifications and documentation for such software.

ADC’s entire liability for software that does not comply with the foregoing warranty and is reported to ADC

during the 90-day warranty period is, at ADC’s option, either (a) return of the price paid or (b) repair or replace

of the software. ADC also warrants that, for a period of thirty (30) days from the date of purchase, the media on

which software is stored will be free from material defects under normal use. ADC will replace defective media

at no charge if it is returned to ADC during the 30-day warranty period along with proof of the date of shipment.

The transportation charges for shipment of returned products to ADC will be prepaid by the Buyer. ADC will pay

transportation charges for shipment of replacement products to Buyer, unless no trouble is found (NTF), in which

case the Buyer will pay transportation charges.

ADC may use reconditioned parts for such repair or replacement. This warranty does not apply to any product

which has been repaired, worked upon, or altered by persons not authorized by ADC or in ADC's sole judgment

has been subjected to misuse, accident, fire or other casualty, or operation beyond its design range.

Repaired products have a 90-day warranty, or until the end of the original warranty period—whichever period is

greater.

ADC DISCLAIMS ALL OTHER WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT

LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

PURPOSE, WITH RESPECT TO ITS PRODUCTS AND ANY ACCOMPANYING WRITTEN MATERIALS.

FURTHER, ADC DOES NOT WARRANT THAT SOFTWARE WILL BE FREE FROM BUGS OR THAT ITS

USE WILL BE UNINTERRUPTED OR REGARDING THE USE, OR THE RESULTS OF THE USE, OF THE

SOFTWARE IN TERMS OF CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.

MODIFICATIONS

Any changes or modifications made to these devices that are not expressly approved by ADC DSL Systems voids

the user's warranty.

All wiring external to the product should follow local wiring codes.

For technical assistance, refer to “Product Support” on page 20.

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ADC DSL Systems, Inc.

14402 Franklin Avenue

Tustin, CA 92780-7013

Tel: 714.832.9922

Fax: 714.832.9924

Technical Assistance

ISO 9001/TL 9000

DOCUMENT: 700-701-100-02

´,JE¶1l¨

DNV Certification, Inc.

REGISTERED FIRM

1242371

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