500-19-54 Dual Channel Telephone Interface
ERRATA SHEET
This sheet contains information regarding errors in this user guide.
Date
Description
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Trilogy Communications Limited
Issue 1.2
Page 3 of 19
500-19-54 Dual Channel Telephone Interface
CONTENTS
1. INTRODUCTION..................................................................................................5
1.1 SAFETY PRECAUTIONS................................................................................................... 5
1.2 TRANSPORTATION AND STORAGE ................................................................................... 5
1.3 MAINS CONNECTOR AND PLUG....................................................................................... 5
1.4 FUSES ........................................................................................................................... 5
1.5 REMOVAL OF COVERS.................................................................................................... 5
2. SYSTEM DESCRIPTION.....................................................................................7
2.1 FEATURES ..................................................................................................................... 7
3.1 DUAL HYBRID WITH TIC MODULES INSTALLED ............................................................... 11
3.2 DUAL HYBRID WITHOUT TIC MODULES INSTALLED ......................................................... 11
3.3 SPECIFICATION ............................................................................................................ 11
4. CONNECTORS..................................................................................................13
4.1 MAINS CONNECTOR - POWER CONNECTION. IEC MAINS................................................. 13
4.2 MATRIX CONNECTOR – RJ45 CONNECTOR .................................................................... 13
4.3 AUDIO CONNECTOR. 9W D CHASSIS PLUG CONNECTOR. ................................................ 13
4.4 LINE CONNECTOR. RJ11 CONNECTOR........................................................................... 13
4.5 PHONE CONNECTOR. RJ11 CONNECTOR....................................................................... 14
5.1 I/F POWER LED........................................................................................................... 15
5.2 HYBRID POWER LED ................................................................................................... 15
5.3 COMMS LINK FAIL/OK LED .......................................................................................... 15
5.4 HYBRID ON/OFF LED ................................................................................................. 15
5.5 AUTO SWITCH.............................................................................................................. 15
5.6 SEIZE SWITCH ............................................................................................................. 15
5.7 DROP SWITCH ............................................................................................................. 15
6. 500-19-21 DUAL HYBRID SET-UP...................................................................17
6.1 INTRODUCTION............................................................................................................. 17
6.2 IMP............................................................................................................................. 17
6.3 DIAL TONE / K-BREAK .................................................................................................. 17
6.4 RESET SWITCH ............................................................................................................ 17
6.5 PROGRAMMABLE PORT ................................................................................................ 17
7.1 INTRODUCTION............................................................................................................. 19
7.3 PANEL RING................................................................................................................. 19
7.4 PANEL DTMF .............................................................................................................. 19
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500-19-54 Dual Channel Telephone Interface
1. INTRODUCTION
1.1 Safety Precautions
This equipment has been designed and tested to the highest safety standards. The following
precautions should be covered to ensure safe operation of the apparatus.
1.2 Transportation and Storage
Careful inspection of the unit must be made after it has been subject to transportation or
storage. Any serious damage, which could render it dangerous, must be acted upon to
safeguard any potential user.
1.3 Mains Connector and Plug
The supply lead plug shall only be inserted into a supply socket equipped with an earth contact.
Extension of the lead must include a suitable conductor for the protective earth.
This equipment must be earthed.
CSA requirements
1) "The socket outlet shall be installed near the equipment and shall be easily
accessible"
2) "The Telephone Hybrid utilizes a AC power source; 90-250Vac, 50-60Hz,
0.25 Amps per cord"
1.4 Fuses
Only the specified value and type of fuse must be fitted in the event of a replacement.
The brown supply lead (live) is fitted with a series fuse located in the mains connector fitted on
the rear panel. Should the unit be fitted with a two-pin plug then it is possible, if the supply is
reversed, for parts of the equipment to remain at supply potential after the fuse has ruptured.
1.5 Removal of Covers
Care must be exercised if the covers of the unit are removed. All internal live parts are covered
but the equipment should be disconnected from the supply source before repair or maintenance.
Should it be necessary to carry out adjustments with the supply voltage connected then this
work must be done by suitably qualified personnel.
Note that capacitors in power supplies and mains filters can be charged when the equipment is
disconnected from the supply. Before commencing work on the unit, these components should
be discharged in a safe manner.
It is important to note the designation of securing screws. These must be replaced in the
positions to which they were supplied to reduce the possibility of damage to circuit boards
mounted close to chassis securing screws.
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500-19-54 Dual Channel Telephone Interface
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500-19-54 Dual Channel Telephone Interface
2. SYSTEM DESCRIPTION
2.1 Features
The telephone unit is a 1U unit containing a power supply and three printed circuit cards; these
provide one or two channels of telephone interface.
The digital hybrid card has smart algorithms to enhance line cancellation and reduce line howl
round.
It has software controlled parameters pre-set in the factory.
The front panel controls are simple to use and there are indicators to show the status.
Digital Hybrid Card
Mercury / Commander TIC Card
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500-19-54 Dual Channel Telephone Interface
2.2 General
The unit contains one dual hybrid card 500-19-21 which can be used as either a means of
converting 2 telephone lines to a line level 4 wire circuit or, if installed with one or two TICs
(Telephone Interface Card 500-19-00 for Commander and 700-19-00 for Mercury), allow a full
DTMF telephone integration with the Trilogy system. For information on the software integration
of the frame into a system refer to the Pathfinder User Guide (chapter 17) or the Mercury
Configuration Manual.
The following diagram shows a typical installation.
Trilogy Matrix
Port “A”
Port “B”
Audio
Data
TIC (optional)
Audio
Data
TIC (optional)
Dual Hybrid Channel 1
Dual Hybrid Channel 2
Handset
(optional)
Handset
(optional)
Telephone Line
Telephone Line
The Dual Hybrid module plugs into the second card slot of the frame, the first and third slots are
for channel one and channel two Telephone Interface cards (TIC) respectively.
Each channel of the digital Dual Hybrid has identical features. The line interface has jumper
selectable CTR21 or 600 ohms that allows the hybrid to operate in the majority of countries.
Also provided on the card is a DIL header to allow the addition of a balance network when
required. This is normally done after consulting Trilogy Support.
The provision of the optional parallel handset connection when auto is set to off this allows for
manually setting up and answering calls when used in conjunction with the manual seize and
drop controls on the Hybrids front panel. If the front panel switch is selected to Auto the parallel
handset will be disconnected.
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500-19-54 Dual Channel Telephone Interface
Front Panel Controls (single channel)
Channel 1
SEIZE
DROP
POWER
I/F
COMMS LINK
FAIL
OFF
HYBRID
ON
OFF
HYBRID
OK
ON
AUTO
When in Auto mode, an incoming call will be answered with a blip of 2 tones being sent down
the line. The tones are an indication to the caller to enter the Direct Dial DTMF tones, if required,
to call an individual panel within the Telephone group. This feature is only available when the
TIC card is installed. This is set up in the configuration software.
Whilst the Hybrid is active it will detect the presence of continuous tone (dial tone) for 6 seconds
or a DC break on the line (K-break) to detect the caller has gone on-hook and to drop the line.
This is done individually for each channel and configured by setting jumpers.
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500-19-54 Dual Channel Telephone Interface
2.3 Dual Hybrid Frame – 500/700 -19-54 Card layout ( one or two TIC cards )
LINE 2
DUAL
LINE 1
INTERFACE
Commander
500-19-00
or
HYBRID
Digital
INTERFACE
Commander
500-19-00
or
500-19-21
Mercury
Mercury
PSU
700-19-00
700-19-00
FRONT OF FRAME
LINE 1
DUAL
INTERFACE
Commander
500-19-00
or
HYBRID
Digital
500-19-21
Mercury
PSU
700-19-00
FRONT OF FRAME
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500-19-54 Dual Channel Telephone Interface
3. INSTALLATION
3.1 Dual Hybrid with TIC modules installed
3.2 Dual Hybrid without TIC modules installed
3.3 Specification
Trilogy 500-19-5x Telephone Interface Frame
Dimensions
485mm wide x 44.5mm high x 440mm deep
(excluding connectors)
19” x 1RU rack mounting
90 – 260 V ac, 50-60Hz
Mains Input
Power Consumption
55VA
Connector Detail (per channel)
Active link to matrix
Audio and Remote Control
Telephone Line
RJ45
D9 Male
RJ11
Parallel Handset
RJ11
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500-19-54 Dual Channel Telephone Interface
4. CONNECTORS
Rear view
4.1 Mains connector - Power connection. IEC mains
Pin Number
L
N
E
Signal
Live
Neutral
Earth
Direction From Unit
Input
Input
Input
4.2 Matrix connector – RJ45 connector
Hybrid RJ45 (“Matrix”)
1 – pair 1
2 – pair 1
3 – pair 2
4 – pair 3
5 – pair 3
6 – pair 2
7 – pair 4
8 – pair 4
Hybrid Signal
Matrix RJ 45
Data RX (a)
Data RX (b)
Data TX (a)
Audio in (b)
Audio in (a)
Data TX (b)
Audio out (a)
Audio out (b)
1 – pair 1
2 – pair 1
3 – pair 2
4 – pair 3
5 – pair 3
6 – pair 2
7 – pair 4
8 – pair 4
Note: Please ensure that any cables are correctly wired, following the 4-pair wiring indicated
above. Failure to do so may lead to incorrect operation of the hybrid frame.
4.3 Audio connector. 9w D chassis plug connector.
Pin Number
Signal
Direction From Unit
Switch Ground
Input
Input
Output
1.
2.
3.
4.
5.
6.
7.
8.
9.
Chassis ground
Seize Switch
Drop Switch
Audio Out (-)
Audio in (-)
Input
Audio out (+)
Audio in (+)
Output
Input
4.4 Line connector. RJ11 connector.
Pin Number
Signal
Direction From Unit
1.
2.
3.
4.
5.
6.
Line +
Line -
Input / Output
Input / Output
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500-19-54 Dual Channel Telephone Interface
4.5 Phone connector. RJ11 connector.
Pin Number
Signal
Direction From Unit
1.
2.
3.
4.
5.
6.
Line +
Line -
Input / Output
Input / Output
NOTE
The Trilogy Dual Hybrid frame should only be connected to a Line via an appropriate approved
fuse disconnection barrier.
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500-19-54 Dual Channel Telephone Interface
5. FRONT PANEL CONTROLS AND INDICATORS
Channel 1
SEIZE
DROP
POWER
I/F
COMMS LINK
FAIL
OFF
HYBRID
OFF
ON
HYBRID
OK
ON
AUTO
5.1 I/F Power LED
Indicates the TIC card is present and powered.
5.2 Hybrid Power LED
Indicates the Hybrid card is present and powered.
5.3 Comms Link Fail/OK LED
Indicates the state of the data comms between the TIC card and the matrix.
5.4 Hybrid ON/OFF LED
Indicates when the Hybrid is ON or OFF hook.
5.5 Auto Switch
Enables / disables the Auto answer mode of the Hybrid.
5.6 Seize Switch
Manually selects the hybrid off-hook.
5.7 Drop Switch
Manually selects the hybrid on-hook.
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6. 500-19-21 DUAL HYBRID SET-UP
6.1 Introduction
The 500-19-21 card carries two identical circuits and is controlled by the 700/500-19-00
interface cards and/or the front panel controls (see the previous section for information on the
controls). Jumpers on the card allow matching to different line and exchange conditions as
shown below. For details on the positions of the jumpers, please refer to the circuit board
legend.
6.2 IMP
This jumper allows matching of the line impedance to “CTR21”, to 600R or to a custom network
by fitting components onto a plug-in header “Net1/2”. If you are not sure which setting to use ,
try both “CTR21” and 600R and select the one with the best match to your line impedance, that
is the setting with least voice feeding back.
6.3 Dial Tone / K-Break
In auto mode the line hold condition can be dropped automatically on detection of continuous
dial tone for 6 seconds or by the detection of a break in the line current generated from the
exchange, (called K break).
With the jumpers fitted these signals will be detected. In some uses the automatic clearing by
one or both methods might be a problem and the required jumper can be removed to disable
detection.
6.4 Reset Switch
You can return the card to Factory Default by pressing and holding the button for about 6
seconds. It will give 10 slow flashes and then speed up. When it speeds up let go and it will be
reset.
6.5 Programmable Port
This is for factory use only.
The Trilogy Dual Hybrid frame should only be connected to a Line via an appropriate
approved fuse disconnection barrier.
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7. 500-19-00 TELEPHONE INTERFACE CARD SET-UP
7.1 Introduction
The 700-19-00 interface card acts as a buffer between the hybrid that connects directly to the
telephone line and the audio and data circuits of the Commander matrix. Each card interfaces
one telephone line to one matrix port. The card is largely digital, but there are three level
controls that although factory pre-set, can be varied if necessary
7.2 Ring Out
This function that is pre-set by R33 controls the ring level heard at the caller’s earpiece when
dialling in.
7.3 Panel Ring
This function that is pre-set by R29 controls the ring level at the panel when receiving an
incoming call:-
7.4 Panel DTMF
This function that is pre-set by R28 controls the level of DTMF on the local panel’s loudspeaker
when dialling out from the panel:
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