VDSL Switch-VS2512A
VDSL Splitter-VM2524
VDSL Splitter-VM2548
Installation Guide
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Installation Guide
VDSL Switch-VS2512A
VDSL Switch supporting 12 VDSL Lines, with 1 Slot for Optional Gigabit
Uplink, 10/100BASE-TX, or 100BASE-FX Modules
VDSL Splitter-VM2524
VDSL Splitter supporting 24 VDSL Lines
VDSL Splitter-VM2548
VDSL Splitter supporting 48 VDSL Lines
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Copyright © 2002 by Accton Technology Corporation. All rights reserved.
No part of this document may be copied or reproduced in any form or by any means without the prior written
consent of Accton Technology Corporation.
Accton makes no warranties with respect to this documentation and disclaims any implied warranties of
merchantability, quality, or fitness for any particular purpose. The information in this document is subject to
change without notice. Accton reserves the right to make revisions to this publication without obligation to
notify any person or entity of any such changes.
International Headquarters
No. 1 Creation Road III,
Science-based Industrial Park
Hsinchu 300, Taiwan
Europe Headquarters
Edificio Conata II,
Calle Fructuós Gelabert 6-8, 2o, 4a,
08970 - Sant Joan Despí,
Barcelona, Spain.
Phone: +886-3-5770-270
Fax:
+886-3-5770-267
Phone: +34-93-477-4920
Internet: [email protected]
Fax:
+34-93-477-3774
Asia Pacific Headquarters
1 Claymore Drive
#08-05/06 Orchard Towers (Rear Block)
Singapore 229594
Phone: +65 238 6556
Fax:
+65 238 6466
Accton is a trademark of Accton Technology Corporation. Other trademarks or brand names mentioned
herein are trademarks or registered trademarks of their respective companies.
VS2512A
VM2524
VM2548
E072002-R01
150000010100A
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Accton Technology Corporation
Limited Warranty: Accton warrants all its products to be free of manufacturing defects in
workmanship and materials, under normal use and service, for the applicable warranty
term. All Accton products carry a standard 90-day limited warranty from the date of
purchase from Accton or its Authorized Reseller. Accton may, at its own discretion, repair
or replace any product not operating as warranted with a similar or functionally equivalent
product, during the applicable warranty term.
The standard limited warranty can be upgraded to a Limited Lifetime* warranty by
registering new products within 30 days of purchase from Accton or its Authorized
Reseller. Registration can be accomplished via the enclosed product registration card or
online via the Accton web site. Failure to register will not affect the standard limited
warranty. The Limited Lifetime warranty covers a product during the Life of that Product,
which is defined as the period of time during which the product is an “Active” Accton
product. A product is considered to be “Active” while it is listed on the current Accton price
list. As new technologies emerge, older technologies become obsolete and Accton will, at
its discretion, replace an older product in its product line with one that incorporates these
newer technologies. At that point, the obsolete product is discontinued and is no longer
an “Active” Accton product. A list of discontinued products is attached with the most
recent version being available on the support section of our web site
All products that are replaced become the property of Accton. Replacement products may
be either new or reconditioned. Any replaced or repaired product carries either a 30-day
limited warranty or the remainder of the initial warranty, whichever is longer. Accton is not
responsible for any custom software or firmware, configuration information, or memory
data of Customer contained in, stored on, or integrated with any products returned to
Accton pursuant to any warranty. Products returned to Accton should have any
customer-installed accessory or add-on components, such as expansion modules,
removed prior to returning the product for replacement. Accton is not responsible for
these items if they are returned with the product.
Customers must contact Accton for a Return Material Authorization number prior to
returning any product to Accton. Proof of purchase may be required. Any product
returned to Accton without a valid Return Material Authorization (RMA) number clearly
marked on the outside of the package will be returned to customer at customer’s
expense. Customers are responsible for all shipping charges from their facility to Accton.
Accton is responsible for return shipping charges from Accton to customer.
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Limited Warranty
WARRANTIES EXCLUSIVE: IF AN ACCTON PRODUCT DOES NOT OPERATE AS
WARRANTED ABOVE, CUSTOMER'S SOLE REMEDY SHALL BE REPAIR OR
REPLACEMENT OF THE PRODUCT IN QUESTION, AT ACCTON’S OPTION. THE
FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF
ALL OTHER. WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN
FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING
WARRANTIES OR CONDITIONS OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. ACCTON NEITHER ASSUMES NOR AUTHORIZES ANY
OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION
WITH THE SALE, INSTALLATION, MAINTENANCE OR USE OF ITS PRODUCTS.
ACCTON SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND
EXAMINATION DISCLOSE THE ALLEGED DEFECT IN THE PRODUCT DOES NOT
EXIST OR WAS CAUSED BY CUSTOMER'S OR ANY THIRD PERSON'S MISUSE,
NEGLECT, IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS
TO REPAIR, OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED
USE, OR BY ACCIDENT, FIRE, LIGHTNING, OR OTHER HAZARD.
LIMITATION OF LIABILITY: IN NO EVENT, WHETHER BASED IN CONTRACT OR
TORT (INCLUDING NEGLIGENCE), SHALL ACCTON BE LIABLE FOR INCIDENTAL,
CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR
FOR LOSS OF REVENUE, LOSS OF BUSINESS, OR OTHER FINANCIAL LOSS
ARISING OUT OF OR IN CONNECTION WITH THE SALE, INSTALLATION,
MAINTENANCE, USE, PERFORMANCE, FAILURE, OR INTERRUPTION OF ITS
PRODUCTS, EVEN IF ACCTON OR ITS AUTHORIZED RESELLER HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
SOME COUNTRIES DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES
OR THE LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
CONSUMER PRODUCTS, SO THE ABOVE LIMITATIONS AND EXCLUSIONS MAY
NOT APPLY TO YOU. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS,
WHICH MAY VARY FROM STATE TO STATE. NOTHING IN THIS WARRANTY SHALL
BE TAKEN TO AFFECT YOUR STATUTORY RIGHTS.
* Accton will provide warranty service for up to three years following discontinuance from
the active Accton price list. Under the limited lifetime warranty, internal and external
power supplies, fans, and cables are covered by a standard one-year warranty from date
of purchase
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Compliances
FCC - Class A
This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause interference to
radio communications. It has been tested and found to comply with the limits for a Class A
computing device pursuant to Subpart B of Part 15 of FCC Rules, which are designed to
provide reasonable protection against such interference when operated in a commercial
environment. Operation of this equipment in a residential area is likely to cause
interference, in which case the user, at his own expense, will be required to take whatever
measures may be required to correct the interference. You are cautioned that changes or
modifications not expressly approved by the party responsible for compliance could void
your authority to operate the equipment.
You may use unshielded twisted-pair (UTP) for RJ-45 connections - Category 3 or greater
for 10 Mbps connections, and Category 5 for 100 Mbps connections. For fiber optic
connections, you may use 50/125 or 62.5/125 micron multimode fiber or 9/125 micron
single-mode fiber.
Warnings: 1. Wear an anti-static wrist strap or take other suitable measures to prevent
electrostatic discharge when handling this equipment.
2. When connecting this hub to a power outlet, connect the field ground lead
on the tri-pole power plug to a valid earth ground line to prevent electrical
hazards.
Industry Canada - Class A
This digital apparatus does not exceed the Class A limits for radio noise emissions from
digital apparatus as set out in the interference-causing equipment standard entitled
“Digital Apparatus,” ICES-003 of the Department of Communications.
Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux
appareils numériques de Classe A prescrites dans la norme sur le matériel brouilleur:
“Appareils Numériques,” NMB-003 édictée par le ministère des Communications.
Japan VCCI Class A
i
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CE Mark Declaration of Conformance for EMI and Safety (EEC)
This information technology equipment complies with the requirements of the Council
Directive 89/336/EEC on the Approximation of the laws of the Member States relating to
Electromagnetic Compatibility and 73/23/EEC for electrical equipment used within certain
voltage limits and the Amendment Directive 93/68/EEC. For the evaluation of the
compliance with these Directives, the following standards were applied:
RFI Emission:
•
•
•
Limit class A according to EN 55022:1998
Limit class A for harmonic current emission according to EN 61000-3-2/1995
Limitation of voltage fluctuation and flicker in low-voltage supply system
according to EN 61000-3-3/1995
Immunity:
•
•
Product family standard according to EN 55024:1998
Electrostatic Discharge according to EN 61000-4-2:1995
(Contact Discharge: ±4 kV, Air Discharge: ±8 kV)
•
•
•
•
•
Radio-frequency electromagnetic field according to EN 61000-4-3:1996
(80 - 1000 MHz with 1 kHz AM 80% Modulation: 3 V/m)
Electrical fast transient/burst according to EN 61000-4-4:1995 (AC/DC power
supply: ±1 kV, Data/Signal lines: ±0.5 kV)
Surge immunity test according to EN 61000-4-5:1995
(AC/DC Line to Line: ±1 kV, AC/DC Line to Earth: ±2 kV)
Immunity to conducted disturbances, Induced by radio-frequency fields:
EN 61000-4-6:1996 (0.15 - 80 MHz with 1 kHz AM 80% Modulation: 3 V/m)
Power frequency magnetic field immunity test according to
EN 61000-4-8:1993
(1 A/m at frequency 50 Hz)
•
•
Voltage dips, short interruptions and voltage variations immunity test
according to EN 61000-4-11:1994 (>95% Reduction @10 ms, 30%
Reduction @500 ms, >95% Reduction @5000 ms)
LVD:
EN 60950 (A1/1992; A2/1993; A3/1993; A4/1995; A11/1997)
Warning! Do not plug a phone jack connector in the RJ-45 port. This may damage this
device. Les raccordeurs ne sont pas utilisé pour le système téléphonique!
Taiwan BSMI Class A
ii
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Safety Compliance
Warning: Fiber Optic Port Safety
When using a fiber optic port, never look at the transmit laser while it is
powered on. Also, never look directly at the fiber TX port and fiber cable
ends when they are powered on.
CLASS I
LASER DEVICE
Avertissment: Ports pour fibres optiques - sécurité sur le plan optique
Ne regardez jamais le laser tant qu'il est sous tension. Ne regardez
jamais directement le port TX (Transmission) à fibres optiques et les
embouts de câbles à fibres optiques tant qu'ils sont sous tension.
DISPOSITIF LASER
DE CLASSE I
Warnhinweis: Faseroptikanschlüsse - Optische Sicherheit
Niemals ein Übertragungslaser betrachten, während dieses
eingeschaltet ist. Niemals direkt auf den Faser-TX-Anschluß
und auf die Faserkabelenden schauen, während diese
LASERGERÄT
DER KLASSE I
eingeschaltet sind.
Underwriters Laboratories Compliance Statement
Important! Before making connections, make sure you have the correct cord set. Check
it (read the label on the cable) against the following:
Operating Voltage
120 Volts
Cord Set Specifications
UL Listed/CSA Certified Cord Set
Minimum 18 AWG
Type SVT or SJT three conductor cord
Maximum length of 15 feet
Parallel blade, grounding type attachment plug rated 15 A, 125 V
Cord Set with H05VV-F cord having three conductors with
240 Volts (Europe only)
2
minimum diameter of 0.75 mm
IEC-320 receptacle
Male plug rated 10 A, 250 V
The unit automatically matches the connected input voltage. Therefore, no additional
adjustments are necessary when connecting it to any input voltage within the range
marked on the rear panel.
iii
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Wichtige Sicherheitshinweise (Germany)
1. Bitte lesen Sie diese Hinweise sorgfältig durch.
2. Heben Sie diese Anleitung für den späteren Gebrauch auf.
3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden Sie keine
Flüssigoder Aerosolreiniger. Am besten eignet sich ein angefeuchtetes Tuch zur
Reinigung.
4. Die Netzanschlu ßsteckdose soll nahe dem Gerät angebracht und leicht zugänglich sein.
5. Das Gerät ist vor Feuchtigkeit zu schützen.
6. Bei der Aufstellung des Gerätes ist auf sicheren Stand zu achten. Ein Kippen oder Fallen
könnte Beschädigungen hervorrufen.
7. Die Belüftungsöffnungen dienen der Luftzirkulation, die das Gerät vor Überhitzung schützt.
Sorgen Sie dafür, daß diese Öffnungen nicht abgedeckt werden.
8. Beachten Sie beim Anschluß an das Stromnetz die Anschlußwerte.
9. Verlegen Sie die Netzanschlußleitung so, daß niemand darüber fallen kann. Es sollte auch
nichts auf der Leitung abgestellt werden.
10. Alle Hinweise und Warnungen, die sich am Gerät befinden, sind zu beachten.
11. Wird das Gerät über einen längeren Zeitraum nicht benutzt, sollten Sie es vom Stromnetz
trennen. Somit wird im Falle einer Überspannung eine Beschädigung vermieden.
12. Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten in das Gerät
gelangen. Dies könnte einen Brand bzw. elektrischen Schlag auslösen.
13. Öffnen sie niemals das Gerät. Das Gerät darf aus Gründen der elektrischen Sicherheit nur
von authorisiertem Servicepersonal geöffnet werden.
14. Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu trennen und von einer
qualifizierten Servicestelle zu überprüfen:
a. Netzkabel oder Netzstecker sind beschädigt.
b. Flüssigkeit ist in das Gerät eingedrungen.
c. Das Gerät war Feuchtigkeit ausgesetzt.
d. Wenn das Gerät nicht der Bedienungsanleitung entsprechend funktioniert oder Sie mit
Hilfe dieser Anleitung keine Verbesserung erzielen.
e. Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt.
f. Wenn das Gerät deutliche Anzeichen eines Defektes aufweist.
15. Zum Netzanschluß dieses Gerätes ist eine geprüfte Leitung zu verwenden. Für einen
Nennstrom bis 6A und einem Gerätegewicht größer 3 kg ist eine Leitung nicht leichter als
H05VV-F, 3G, 0.75 mm2 einzusetzen.
Der arbeitsplatzbezogene Schalldruckpegel nach DIN 45 635 Teil 1000 beträgt 70 dB(A) oder
weniger.
iv
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Contents
v
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Contents
vi
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Chapter 1: About the VDSL Switch-VS2512A
Overview
Accton’s Ethernet-over-VDSL system consists of end-user CPEs (Customer
Premise Equipment) connected to a VDSL switch and splitter by standard telephone
cable. The VDSL connection delivers an Ethernet data link rated up to
15 Mbps symmetric (full duplex), while simultaneously supporting standard
telephone services. The system can be deployed in any multi-dwelling/multi-tenant
environment (apartment blocks, hotels, or office complex) to provide both high-
speed Internet access and telephone services without any need for re-wiring.
Accton’s VDSL Switch-VS2512A and VDSL-Splitter-VM2524/VM2548 combine both
the data and phone signals coming from your Internet and telephone service
providers, and pass these signals directly over standard telephone wiring to multiple
users in the same building. A CPE is then used to separate these signals and pass
them on to a customer’s computer and telephone equipment. In-building
connections can operate up to 15 Mbps for runs up to 1070 m (3500 ft), 10 Mbps for
runs up to 1220 m (4000 ft), 5 Mbps for runs up to 1525 m (5000 ft).
Note: Category 3 cable must be installed to achieve the maximum distance, but the
distance may be limited by factors such as how the cable is bundled, and the
interference and noise on the link.
The VDSL switch and splitter are typically located in a wiring closet or other central
location of a multi-dwelling/multi-tenant unit, campus or enterprise. An Internet
connection is provided from the ISP to the customer’s building over fiber optic cable,
running Ethernet directly over a 100 Mbps or 1 Gbps connection. This kind of WAN
connection is referred to as Fiber To The Building (FTTB). Phone signals are routed
from PBX/MDF distribution equipment into the splitter. The data and phone signals
for each user are combined in the splitter, and passed over VDSL lines to individual
customers.
The CPE at the other end of the VDSL line connects to any PC or Macintosh
equipped with a 10/100BASE-TX network interface card. Your existing telephone,
modem, or fax machine simply plugs into the CPE’s phone port. There is no need for
special splitters, terminators or filters. In fact, there is no need to modify the home
wiring at all. And, because the VDSL connection is based on Ethernet, no further
complex software configuration is required.
1-1
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About the VDSL Switch-VS2512A
VDSL Technology
VDSL (Very High Bit-Rate Digital Subscriber Line) is at the high-end of all the DSL
technologies, offering the best combination of fiber optics and copper to provide
high-speed broadband Internet access. VDSL’s primary application is in providing a
broadband data service to multi-tenant residential or commercial buildings. In this
implementation, fiber optic cable carries data from an Internet Service Provider to
the building; then the installed telephone copper wires take the data and deliver it to
individual units within that building.
Telephone
Rooms/Clients
ES2002-TS
VDSL CPE
Floor 2
Telephone/Fax
Rooms/Clients
ES2002-TS
VDSL CPE
Existing Phone
Lines to Clients
Floor 1
Local Servers
(Locally Hosted Services,
Video Servers, Billing)
VDSL
Switch-VS2512A
VDSL
Splitter-VM2524
Punch Down
Blocks /
Patch Panels
t
c
h
V
S
V
D
S
L
S
w
i
-
0
-
6
0
H
z
1
A
100-240V
~
5
E
t
h
e
r
n
e
t
4
Stackingn
Diaga
Powwer
Reset
Console
V
S
2
5
1
2
A
1
2
3
V
6
D
S
L
7
8
9
10
1
1
12
Activity
v
ty
5
Linkn
/Speed
1
2
3
4
Activity
v
ty
Stackingn
Onf
O
Link
ISP
Master
M
o
d
u
l
e
Down
E
x
p
a
n
s
i
o
n
Up
d
e
M
Module
o
d
u
l
e
100BASE-F
0BASE-FX Singlemo
S
i
n
g
l
e
m
o
JS
V
S
p
l
t
e
r
-
VVMM225522
4
V
D
S
L
t
V
M
2
5
2
(Internet)
L
i
n
e
Fiber Optic Link to ISP
Phone Lines
VDSL Lines
PBX
Central Office
(PSTN)
Telephone Line from Central Office
Multi-dwelling/Multi-tenant Building
Figure 1-1. VDSL Application
VDSL provides high-speed Internet access over existing phone lines by making use
of previously unused frequency bandwidth above the voice band. By placing VDSL
signals above the frequency of the voice signal, a VDSL service can coexist on the
same line as other telephone services. VDSL can operate symmetrically, providing
the same data rate in both directions, or asymmetrically, providing a higher data rate
in the downstream (receive) direction than in the upstream (transmit) direction.
VDSL can deliver high-performance online applications, such as high-quality video
and other switched multimedia services. Accton's Ethernet-over-VDSL system
provides robust performance, with a symmetric data rate up to 15 Mbps, and a range
up to 1525 m (5000 ft). Accton’s system is based on advanced VDSL QAM
(Quadrature Amplitude Modulation) technology with adaptive channel equalization
that overcomes bridge taps and other line distortions. Reed-Solomon Forward Error
Correction and interleaving protects against errors due to impulse noise and enables
recovery from signal interruptions. Frequency Division Duplexing (FDD) separates
downstream and upstream channels and allows VDSL signals to coexist with regular
telephone services. A power back-off mechanism is also implemented to reduce
noise from crosstalk in line bundles.
1-2
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Overview
Switch Architecture
The VDSL Switch-VS2512A employs a wire-speed, non-blocking switching fabric.
This permits simultaneous wire-speed transport of multiple packets at low latency on
all ports. This switch also features full-duplex capability on all ports, which effectively
doubles the bandwidth of each connection.
Management Options
This switch contains a comprehensive array of LEDs for “at-a-glance” monitoring of
network and port status. It also includes a built-in network management agent that
allows the switch to be managed in-band using SNMP or RMON (Groups 1, 2, 3 and
9) protocols, with a Web browser, or remotely via Telnet. The switch also provides an
RS-232 serial port (DB-9 connector) on the front panel for out-of-band management.
A PC may be connected to this port for configuration and monitoring out-of-band via a
null-modem cable. (See Appendix B for wiring options.)
This switch provides a wide range of advanced performance-enhancing features.
Port-based and tagged VLANs, plus support for automatic GVRP VLAN registration
provides traffic security and efficient use of network bandwidth. QoS priority
queueing ensures the minimum delay for moving real-time multimedia data across
the network. Flow control eliminates the loss of packets due to bottlenecks caused
by port saturation. Broadcast storm control prevents broadcast traffic storms from
engulfing the network. Some of this switch’s advanced features are described below.
For a detailed description, refer to the Management Guide.
VLANs
The VDSL Switch-VS2512A supports up to 255 VLANs. A Virtual LAN is a collection
of network nodes that share the same collision domain regardless of their physical
location or connection point in the network. By segmenting your network into
VLANs, you can:
• Eliminate broadcast storms which severely degrade performance in a flat network.
• Simplify network management for node changes/moves by remotely configuring
VLAN membership for any port, rather than having to manually change the node’s
IP address.
Multicast Switching
Specific multicast traffic can be assigned to its own VLAN to ensure that it does not
interfere with normal network traffic and to guarantee real-time delivery by setting
the required priority level for the designated VLAN. The switch uses IGMP Snooping
to manage multicast group registration.
1-3
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About the VDSL Switch-VS2512A
Traffic Priority
This switch provides Quality of Service (QoS) by prioritizing each packet based on
the required level of service, using four distinct categories with Weighted Round
Robin Queuing. It uses IEEE 802.1p and 802.1Q tags to prioritize incoming traffic
based on input from the end-station application. These functions can be used to
provide independent priorities for delay-sensitive data and best-effort data.
Description of Hardware
VDSL Switch-VS2512A
Accton’s VDSL Switch-VS2512A together with the VDSL Splitter-VM2524/VM2548
combines data and voice signals for delivery over standard telephone cable to
multiple users in residential or commercial buildings. Ethernet data signals are
received on the switch uplink port and passed to 12 VDSL lines via 12 internal
Ethernet ports. These 12 VDSL lines are then passed to the splitter via the RJ-21
connector on the rear panel.
The switch supports the following optional modules: 1-port 1000BASE-T, 1-port
1000BASE-SX, 1-port 1000BASE-LX, 1-port 1000BASE-X GBIC, 4-port
100BASE-FX multimode and single-mode, 1-port 100BASE-FX mutimode, 1-port
10/100BASE-TX, or 4-port 10/100Base-TX. The fiber module ports can provide
direct connection to your ISP with fiber optic cable. In a switch stack, any of the
module ports can also function as uplinks to the backbone, or as regular switch ports
for networking.
Speed, duplex mode, and flow control for the optional module, and GBIC transceiver
ports are shown below.
Port Type
Speed
Duplex Mode
full duplex
auto
Flow Control
auto
100BASE-FX
10/100BASE-TX
1000BASE-T
100 Mbps
auto (10/100 Mbps)
auto
auto (10/100/1000 Mbps) full duplex at 1000 Mbps
full/half duplex at 10/100 Mbps
auto
1000BASE-SX
1000BASE-LX
1000BASE-LH
1000 Mbps
1000 Mbps
1000 Mbps
full duplex
full duplex
full duplex
auto
auto
auto
Note: If the attached device does not support auto-negotiation, you will have to manually
configure the other device to match the duplex mode and speed, otherwise it will
default to half duplex.
The switch also includes a DB-9 console port on the front panel for switch
configuration. It also has two FireWire (IEEE 1394) ports that can be used to stack
up to 8 units for common management access. When multiple units are stacked
together, you can manage the entire stack by connecting to the console port on the
Master unit in the stack. The push button on the front panel is used to select the
Master unit in the stack.
Note: Only one unit in the stack can act as Master.
1-4
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Description of Hardware
The switch also includes key system and port indicators that simplify installation and
network troubleshooting. The front panel has LEDs for Ethernet link status/activity
and VDSL link status, as well as system status indicators.
The following figure shows the components of the VDSL Switch.
Expansion Slot
Ethernet Port
Status Indicators
Stacking Master
Push-button
Stacking Master
Status Indicator
1000BASE-T, 1000BASE-SX,
1000BASE-X GBIC,100BASE-FX,
or 10/100BASE-TX modules
System Status
Indicators
VDSL Port
StatusIndicators
Power Socket
VDSL Switch -VS2512A
Stacking
VDSL
Ethernet
Expansion Module
1
2
3
4
5
6
7
8
9
10 11 12
1
2
3
4
Stacking
Diag
Power
Activity
Link
Activity
Reset
On
Off
Link/Speed
Master
Console
100-240V ~ 50-60 Hz 1A
Up
Down
VS2512A
Reset Button
Console Port
Use this for console connections
Stacking Ports
VDSL Connector (to Splitter)
VDSL
Figure 1-2. VDSL Switch-VS2512A Front and Rear Panels
VDSL Splitter-VM2524 and VDSL Splitter-VM2548
Accton’s VDSL Splitter-VM2524 and VDSL Splitter-VM2548 combine data and voice
signals for delivery over standard telephone cable to multiple users in residential or
commercial buildings. Data signals from the VDSL Switch port (rear panel) are
combined with phone signals from the PBX port (rear panel) and then passed to
multiple users over the VDSL Line port (front panel). The VDSL Splitter-VM2524 can
support up to 24 line/users. The VDSL Splitter-VM2548 can support up to 48 line/
users.
Two VDSL Switch-VS2512A units can be connected to one VDSL Splitter-VM2524,
or four can be connected to one VDSL Splitter-VM2548, with “Y” cables, via the
VDSL Switch port.The switch is connected directly to your ISP with fiber optic cable.
The RJ-21 PBX port on the rear panel connects to PBX/MDF equipment that leads
to your POTS (Plain Old Telephone Service) provider. The RJ-21 VDSL Line port on
the front panel connects to a punch-down block or patch panel that distributes phone
lines to individual users in your building.
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About the VDSL Switch-VS2512A
The following figures shows the components of the VDSL Splitter-VM2524 and
VDSL Splitter-VM2548.
Line
VDSL Splitter -VM2524
VM2524
VDSL Line Connector
(to end users)
PBX
VDSL Switch
VDSL Line Connector
(to switch)
PBX/MDF Connector
(to POTS provider)
Figure 1-3. VDSL Splitter-VS2524 Front and Rear Panels
Line A
Line B
VDSL Splitter -VM2548
VM2548
VDSL Line Connectors
(to end users)
VDSL Line Connectors
(to switch)
PBX B
VDSL Switch B
PBX A
VDSL Switch A
PBX/MDF Connectors
(to POTS provider)
Figure 1-4. VDSL Splitter-VS2548 Front and Rear Panels
Ethernet-over-VDSL CPE
The Splitter-VM2524 and Splitter-VM2548 are designed to connect to the RJ-11
VDSL Line port on an ES2002-TS CPE. The CPE provides users with a high-speed
Internet connection via its RJ-45 Ethernet port and a standard telephone connection
via its RJ-11 phone jack.
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Description of Hardware
Status LEDs
The LEDs, which are located on the VS2512A front panel for easy viewing, are
shown below and described in the following table.
VDSL
Ethernet
1
2
3
4
5
6
7
8
9
10 11 12
1
2
3
4
Stacking
Diag
Power
Activity
Link
Activity
On
Off
Link/Speed
Master
Figure 1-5. Port and System LEDs
Port Status LEDs
Status
LED
Condition
VDSL Ports
Link
On Green
Port has a valid connection, port enabled
Flashing Amber
Port has a valid connection, port disabled
Port does not have a valid connection
Shows that traffic is crossing the port
Shows that no traffic is crossing the port
Off
Activity
Flashing Green
Off
Ethernet Ports
Link/Speed
On Amber
Port is operating at 1000 Mbps
Port is operating at 100 Mbps
Port is operating at 10 Mbps
Port is disabled
On Green
Flashing Green
Flashing Amber
Flashing Green
Off
Activity
Shows that traffic is crossing the port
Shows that no traffic is crossing the port
System Status LEDs
Status
LED
Condition
On
Power
Diag
Switch is receiving power
System diagnostic test in progress
Flashing Green
On Green
On Amber
On
System diagnostic test successfully completed
System diagnostic test failed
Stacking
Master
Shows that the stacking link is connected
The switch is the master switch in the stack
The switch is a slave switch in the stack
On
Off
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About the VDSL Switch-VS2512A
Optional Media Extender Modules
Optional 1000BASE-SX Module (VM2512A-1SX-SC-M)
1000BASE-SX Multimode Module
TX
RX
VM2512A-1SX-SC-M
Figure 1-6. Single-Port 1000BASE-SX Gigabit Module
Using multimode fiber optic cable, the 1000BASE-SX port can be connected to a
remote site up to 550 m (1805 ft) away. The 1000BASE-SX Gigabit module operates
at 1 Gbps, with support for full-duplex mode and flow control. This module is fitted
with an SC connector, but you can attach an ST plug to the switch using the SC-ST
Converter (Part Number: ST5002).
Note: If the attached device does not support auto-negotiation, you will have to manually
configure the other device to full duplex and no flow control.
Optional 1000BASE-LX Module (VM2512A-1LX-SC-S)
1000BASE-LX Singlemode Module
TX
RX
VM2512A-1LX-SC-S
Figure 1-7. Single-Port 1000BASE-LX Gigabit Module
Using single-mode fiber optic cable, the 1000BASE-LX port can be connected to a
remote site up to 5 km (16404 ft) away. The 1000BASE-LX Gigabit module operates
at 1 Gbps, with support for full-duplex mode and flow control. This module is fitted
with an SC connector, but you can attach an ST plug to the switch using the SC-ST
Converter (Part Number: ST5002).
Note: If the attached device does not support auto-negotiation, you will have to manually
configure the other device to full duplex and no flow control.
Optional 1000BASE-X GBIC Module (VM2512A-1GX-GBIC)
1000BASE-X GBIC Module
VM2512A-1GX-GBIC
Figure 1-8. Single Port 1000BASE-X GBIC Module
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Description of Hardware
1000BASE-SX GBIC transceivers provide one short-wavelength (850 nm) Gigabit
port that can be used for a high-speed backbone or server connection. This port can
be connected to a site up to 220 m (722 ft) away with 62.5/125 micron multimode
fiber cable, or up to 500 m (1641 ft) with 50/125 micron multimode fiber cable.
1000BASE-LX GBIC transceivers provide one long-wavelength (1300 nm) Gigabit
port that can be used for a high-speed backbone or server connection. This port can
be connected to a site up to 5 km (16404 ft) away with single-mode fiber cable.
1000BASE-LH GBIC transceivers provide one long-wavelength (1550 nm) Gigabit
port that can be used for a long-haul connection to a remote location. This port can
be connected to a site up to 70 km (43.5 miles) away with single-mode fiber cable.
Caution: Install only 5 V GBIC transceivers into the module slots
Optional 1000BASE-T Module (VM2512A-1GT)
1000BASE-T Module
VM2512A-1GT
Figure 1-9. Single-Port 1000BASE-T Gigabit Module
Using Category 5 or 5e twisted-pair cable you can connect to another device up to
100 m (328 ft) away. The 1000BASE-T module operates at 10, 100, or 1000 Mbps,
full duplex, and supports auto-negotiation of speed and flow control. Note that you
should first test the cable installation for IEEE 802.3ab compliance. See
If the attached device does not support auto-negotiation, you will have to manually
configure the other device to match the speed and duplex mode with no flow control.
Optional 10/100BASE-TX Module (VM2512A-1TX)
10/100BASE-TX Module
VM2512A-1TX
Figure 1-10. 1-Port 10/100BASE-TX Module
Using Category 3, 4, or 5 twisted-pair cable for 10 Mbps links or Category 5
twisted-pair cable for 100 Mbps links, you can connect to another device up to
100 m (328 ft) away. The 10/100BASE-TX module operates at 10/100 Mbps, full
and half duplex, and supports auto-negotiation of speed and flow control.
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About the VDSL Switch-VS2512A
Optional 10/100BASE-TX Module (VM2512A-4TX)
10/100BASE-TX Module
VM2512A-4TX
Figure 1-11. 4-Port 10/100BASE-TX Module
Using Category 3, 4, or 5 twisted-pair cable for 10 Mbps links or Category 5
twisted-pair cable for 100 Mbps links, you can connect to another device up to
100 m (328 ft) away. The 10/100BASE-TX module operates at 10, 100 Mbps, full
and half duplex, and supports auto-negotiation of speed and flow control.
Optional 100BASE-FX Module (VM2512A-1FX-SC-M)
100BASE-FX Multimode Module
VM2512A-1FX-SC-M
Figure 1-12. 1-Port 100BASE-FX Multimode Module
Using 62.5/125 or 50/125 micron multimode fiber cable, the 100BASE-FX port can
be connected to a remote site up to 2 km (1.24 miles) away. The 100BASE-FX
module operates at 100 Mbps, with support for full-duplex mode and flow control.
This module is fitted with an SC connector.
Optional 100BASE-FX Module (VM2512A-4FX-MTRJ-M)
100BASE-FX Multimode Module
VM2512A-4FX-MTRJ-M
Figure 1-13. 4-Port 100BASE-FX Multimode Module
Using 62.5/125 or 50/125 micron multimode fiber cable, the 100BASE-FX ports can
be connected to a remote site up to 2 km (1.24 miles) away. The 100BASE-FX
module operates at 100 Mbps, with support for full-duplex mode and flow control.
This module is fitted with 4 MT-RJ connectors.
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Description of Hardware
Optional 100BASE-FX Module (VM2512A-4FX-MTRJ-S)
100BASE-FX Singlemode Module
VM2512A-4FX-MTRJ-S
Figure 1-14. 4-Port 100BASE-FX Single-mode Module
Using 9/125 micron single-mode fiber cable, the 100BASE-FX ports can be
connected to a remote site up to 20 km (12.43 miles) away. The 100BASE-FX
module operates at 100 Mbps, with support for full-duplex mode and flow control.
This module is fitted with 4 MT-RJ connectors
Power Supply Receptacle
There is a power receptacle on the front panel of the switch for the AC power cord.
VDSL Switch -VS2512A
Console
100-240V ~ 50-60 Hz 1A
VS2512A
Figure 1-15. Power Supply Receptacle
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About the VDSL Switch-VS2512A
Key Features
VDSL features (CPE side) include:
• High-speed Internet access over existing phone lines
• VDSL connection provides the following rate/range options:
Rate
15 Mbps
Mode
Symmetric
Symmetric
Symmetric
Max. Range
1070 m (3500 ft)
1220 m (4000 ft)
1525 m (5000 ft)
10 Mbps
5 Mbps
• Concurrent data and telephone services (voice/ISDN) over a single connection
• Always-on digital connection eliminates dial-up delays, and transparent
reconnection when initiating any network request
• Supports evolving ETSI, ANSI and ITU VDSL standards for the copper local loop
• Spectral compatibility with POTS, ISDN (2B1Q/4B3T) or “Smartphone” digital PBX
• Port-to-port isolation for Ethernet
• Robust operation on severely distorted lines
• Supports power back-off algorithm that permits a mixed distance deployment
Ethernet features (CO side) include:
• Optional 1-port 1000BASE-T, 1-port 1000BASE-SX,1-port 1000BASE-X GBIC,
4-Port 100BASE-FX, or 4-Port 10/100BASE-TX modules
• Compliant to IEEE 802.3 10BASE-T Ethernet, IEEE 802.3u 100BASE-TX and
100BASE-FX Fast Ethernet, IEEE 802.3ab Gigabit Ethernet, and IEEE 802.3z
Gigabit Ethernet standards
• The 1000BASE-T port auto-negotiates Ethernet connection at 10/100/1000 Mbps,
full/half duplex at 10/100 Mbps, full duplex at 1000Mbps
• The 1000BASE-SX port cannot be set to auto-negotiation; it is fixed at 1000 Mbps,
full duplex
• The 100BASE-FX ports cannot be set to auto-negotiation; they are fixed at
1000 Mbps, full duplex
• The 10/100BASE-TX ports auto-negotiate Ethernet connection at 10/100 Mbps,
full/half duplex
• Provides back pressure for half duplex and IEEE 802.3x flow control for full duplex
System features include:
• LEDs indicate Ethernet link status/activity, VDSL link status, and System status
• Stacks up to 8 units for console management
• Simple plug-and-play installation
• Switch fabric bandwidth of 9.8 Gbps
• Switching table with a total of 8K entries
• Transparent bridging
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Key Features
• Provides Store-and-Forward switching for intra-VLAN traffic
• Supports wire-speed Layer 2 switching
• Supports flow control, using back pressure for half duplex and IEEE 802.3x for full
duplex
• Broadcast Storm Control
• Desktop or rack-mountable
Management features include:
• “At-a-glance” LEDs for easy troubleshooting
• Network management agent:
• Manages switch in-band or out-of-band
• Supports Telnet, SNMP/RMON and Web-based interface
• Spanning Tree Protocol for redundant network connections
• VLAN Support with up to 255 groups, port-based or with 802.1Q VLAN
tagging, and GVRP for automatic VLAN learning
• Quality of Service (QoS) supports four levels of priority and Weighted Round
Robin Queueing
• Multicast Switching based on IGMP Snooping
• Port trunking supported with 2 Gigabit ports.
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About the VDSL Switch-VS2512A
1-14
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Chapter 2: Network Planning
Introduction to Switching
A network switch allows simultaneous transmission of multiple packets via
non-crossbar switching. This means that it can partition a network more efficiently
than bridges or routers. The switch has, therefore, been recognized as one of the
most important building blocks for today’s networking technology.
When performance bottlenecks are caused by congestion at the network access
point (such as the network card for a high-volume file server), the device
experiencing congestion (server or power user) can be attached directly to a
switched port. And, by using full-duplex mode, the bandwidth to the end-user can be
doubled to maximize throughput.
A switch can be easily configured in any Ethernet network to significantly boost
bandwidth while using conventional cabling and network cards.
Sample Applications
VDSL provides significant savings on network installation, equipment and service
fees. Internet services operate over existing phone cabling and a minimal amount of
network equipment. The only changes require installing an ES2002-TS CPE for
each client, and a VDSL Switch-VS2512A and VDSL Splitter-VM2524 in the
basement or wiring closet. Internet service can then be provided over a direct
Ethernet connection to your ISP. For non-commercial environments, you can run the
switch through a broadband router at the customer’s site. This will allow you to use a
single-user account and ISP sharing to significantly reduce network access charges.
Accton’s VDSL Switch-VS2512A provides Internet connections of up to 15 Mbps, full
duplex, for multiple users. Cable distances also can run up to 1525 meters (at lower
transmission rates). VDSL installation is extremely economical for multiple-tenant
dwellings such as apartment buildings, hotels or school dormitories, as well as
commercial buildings.
VDSL provides multiple-user access to the Internet with benefits including:
• Internet services such as e-mail over faster connections than currently possible
with other options such as cable modem or ADSL
• Multimedia applications such as video and virtual gaming made available to the
broader public for the first time
• Access to corporate intranets at speeds close to that available in the office
Both local network applications and Internet services are supported for commercial
environments.
2-1
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Network Planning
Internet Connections
The figure below shows a VDSL Switch-VS2512A and VDSL Splitter-VM2524
providing a broadband data service to a multi-tenant residential or commercial
building. In this implementation, fiber optic cable carries data from a telephone
company’s central office to the building; then the installed telephone copper wires
take the data and deliver it to individual units within that building.
Existing Phone
Lines to Clients
Local Servers
(Locally Hosted Services,
VDSL
VDSL
Switch-VS2512A
Video Servers, Billing)
Splitter-VM2524
Punch Down
Blocks /
Patch Panels
-
V
22
AA
A
V
D
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4
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i
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ISP
(Internet)
Phone Lines
VDSL Lines
Fiber Optic Link to ISP
PBX
Telephone Line from Central Office Central Office
(PSTN)
Multi-dwelling/Multi-tenant Building
Figure 2-1. Internet Connections
Remote Connections with Fiber Cable
Fiber optic technology allows for longer cabling than any other media type. A
1000BASE-SX MMF Gigabit link can connect to a site up to 550m away. This allows
end-users in two sites to use the same Internet connection, share server resources,
and communicate with each other.
In the figure below, a 1000BASE-SX port on the bottom VDSL Switch-VS2512A in
the stack in Building 1 is providing 1000 Mbps connectivity to the VDSL
Switch-VS2512A in Building 2.
Existing Phone
Lines to Clients
Local Servers
(Locally Hosted Services,
Video Servers, Billing)
ISP
(Internet)
VDSL
Switch-VS2512A
VDSL
Splitter-VM2524
Punch Down
Blocks /
L
i
t
-
2
2
V
D
S
~
50-60
Hz
1A
100-240V
E
t
h
e
r
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t
4
S
t
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g
Power
Reset
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V
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1
12
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y
1
2
Diagga
Patch Panels
V
6
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8
9
10
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M
2
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i
n
e
Phone Lines
VDSL Lines
Fiber Optic Link to ISP
PBX
Telephone Line from Central Office Central Office
(PSTN)
Multi-dwelling/Multi-tenant Building 1
1000BASE-SX (550 m)
Existing Phone
Lines to Clients
VDSL
Switch-VS2512A
VDSL
Local Servers
(Locally Hosted Services,
Video Servers, Billing)
Splitter-VM2524
Punch Down
Blocks /
Patch Panels
-
V
S
2
5
1
V
D
S
L
S
w
~
H
z
-
6
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e
S
t
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k
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V
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V
M
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5
V
M
2
5
2
V
D
S
L
S
plitter
-
V
M
2
5
2
4
L
i
n
Phone Lines
VDSL Lines
PBX
Central Office
(PSTN)
Telephone Line from Central Office
Multi-dwelling/Multi-tenant Building 2
Figure 2-2. Remote Connection with Fiber Cable
2-2
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Sample Applications
Making VLAN Connections
VLANs can be based on port groups, or each data frame can be explicitly tagged to
identify the VLAN group to which it belongs. When using port-based VLANs, ports
can be assigned to one or more groups. Port-based VLANs are suitable for small
networks. A single switch can be easily configured to support several VLAN groups
for various organizational entities (such as Finance and Marketing).
When VLANs cross switches linked by Ethernet connections, you must use VLAN
tagging. This allows you to assign multiple VLAN groups to the “trunk” ports (that is,
tagged ports) connecting different switches.
This switch also has a Private VLAN feature. This allows modification of the default
VLAN to provide port-based security and isolation between ports within the VLAN.
Data traffic on these ports can only be forwarded to, and from, the uplink port.
Private VLANs and normal VLANs can exist simultaneously within the same switch.
In the figure below, ports 1-5, connected to four end users and a server, are
configured into a normal VLAN. The remaining ports are configured into a private
VLAN.
Ports 1-5 in VLAN 2
Ports 6-24 in a Private VLAN
VDSL Splitter-VM2524
-VM2524
Splitter
VDSL
V
M2524
-VS2512A
Switch
VDSL
z
1
A
Line
50-60
H
~
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100-2240V
t
Powwerr
Reset
E
t
h
e
r
n
e
t
ng
l
ol
VS2512A
VDSL Switch-VS2512A
4
Staaccking
3
2
1
12
ctivity
V
6
D
S
L
7
10
1
1
Activity
peed
Diag
9
8
5
Link/Sp
ink/S
4
3
2
1
ity
Activity
On
Off
Sttacckiinngg
Linnkk
er
Maste
Module
Dowwnn
Expansion
Up
le
de
Multimode
MModule
Mul
SX
SE-
0BA
10000BASE-SX
RX
TX
VM2512A-1SX-SC-M
Fiber Optic Link to ISP
Phone Lines to Central Office
ISP
(Internet)
Central Office
(PSTN)
Figure 2-3. Making VLAN Connections
Note: When connecting to a switch that does not support IEEE 802.1Q VLAN tags, use
untagged ports.
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Network Planning
Application Notes
1. For network applications that require routing between dissimilar network types,
you can attach the VDSL switch directly to a router.
2. The multimode fiber modules are fitted with SC connectors, but you can attach
an ST plug to the switch using Accton’s optional SC-to-ST plug converter (Part
Number: ST5002, for 62.5/125 micron cable only). If you do use an ST plug
converter, be sure you run cable from the Rx (Tx) port on the module to the Tx
(Rx) port on the target device.
3. As a general rule the length of Gigabit fiber optic cable for a single switched link
should not exceed 550 m (1805 ft) for multimode fiber or 5 km (16404 ft) for
single-mode fiber.
However, power budget constraints must also be considered when calculating
the maximum cable length for your specific environment.
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Chapter 3: Installing the VDSL Switch and Splitter
Preparing the Site
In multi-tenant buildings, phone lines coming from the service provider are generally
attached to a PBX or MDF distribution box in the basement. These lines run from the
PBX to a punch-down block, and then up to the POTS terminals for individual users.
The following figure displays the normal wiring before installing the VDSL switch and
splitter.
Existing Phone
Lines to Clients
Upper Floors
Basement
Punch-Down Blocks
Telephone Line
PBX
from Central Office
Figure 3-1. Wiring before VDSL Switch and Splitter Installation
Installing Additional Phone Line Equipment
The switch and splitter should be installed close to the PBX and the punch-down
block, usually in the basement or wiring closet. You may also want to install a rack
for distribution equipment, such as a splitter, switch, router, or patch panel.
An optional patch panel can be used to connect the circuits between the splitter and
the punch-down blocks. If a patch panel is not used, the splitter connects directly to
the PBX for the incoming phone lines and the punch-down block used for the VDSL
lines running up to the end users. In this case, the punch-down blocks must have an
RJ-21 connector.
Equipment Checklist
Before installing the switch and splitter, verify that you have all the items listed under
“Package Contents.” If any of the items are missing or damaged, contact your local
Accton distributor. Also, be sure you have all the necessary tools and cabling before
installing the switch and splitter. Note that these devices can be installed on any
suitably large flat surface or in a standard EIA 19-inch rack.
3-1
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Installing the VDSL Switch and Splitter
Package Contents
VDSL Switch-VS2512A
• VDSL Switch-VS2512A
• Four adhesive foot pads
• Bracket Mounting Kit containing two brackets and four screws for attaching the
brackets to the switch
• One Power Cord—either US, Continental Europe or UK
• RS-232 console cable
• One FireWire Stack Cable
• This Installation Guide
• Management Guide
VDSL Splitter-VM2524/2548
• VDSL Splitter-VM2524 or VDSL Splitter-VM2548
• Four adhesive foot pads
• Bracket Mounting Kit containing two brackets and four screws for attaching the
brackets to the splitter
• This Installation Guide
Please complete the warranty registration card and return to Accton, or register
online at: register.acctontech.com.
Please inform your dealer if there are any incorrect, missing or damaged parts. If
possible, retain the carton, including the original packing materials. Use them again
to repack the product in case there is a need to return it for repair.
Optional Rack-Mounting Equipment
If you plan to rack-mount the switch and splitter, be sure to have the following
equipment available:
• Four mounting screws for each device you plan to install in a rack—these are not
included
• A screwdriver (Phillips or flathead, depending on the type of screws used)
Mounting
The switch and splitter may be mounted on any flat surface, such as a shelf, or in a
rack.
Before you start installing the switch and splitter, make sure you can provide the
right operating environment, including power requirements, sufficient physical
space, and proximity to other network devices that are to be connected. Verify the
following installation requirements:
3-2
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Mounting
• Power requirements: 100 to 240 VAC (± 10%) at 50 to 60 Hz (± 3Hz). The switch
and splitter power supplies automatically adjust to the input voltage level. Make
sure that a properly grounded power outlet is within 2.5 m (8 ft) of the switch and
splitter.
• The switch and splitter should be located in a cool dry place, with at least 10 cm
(4 in.) of space on the sides for ventilation.
• Place the switch and splitter out of direct sunlight, and away from heat sources or
areas with a high amount of electromagnetic interference. The temperature and
humidity should be within the ranges listed in the specifications.
• If you intend to mount the switch and splitter in a rack, make sure you have all the
necessary mounting screws, brackets, bolts and nuts, and the right tools.
• Check if network cables and connectors needed for installation are available.
• Be sure the splitter is within reach of the punch-down blocks (or patch panel) for
rear panel connections and within reach of the VDSL switch for front panel
connections.
Installing Optional Modules: Before mounting the switch, be sure you install any
optional modules. If you have purchased an optional slide-in 1000BASE-SX,
1000BASE-T, 1000BASE-LX, 1000BASE-X GBIC, 10/100BASE-TX or
100BASE-FX media expansion module, install it now, following the instructions
provided on page 3-5.
To rack-mount devices:
1. Attach the brackets to the device using the screws provided in the Bracket
Mounting Kit.
E
x
pan
sion
M
o
du
le
St
ac
ki
ng
U
p
D
ow
M
as
te
n
1
r
A
ct
ivit
2
3
O
n
O
ff
y
VDSL
4
5
Li
nk
6
7
8
9
10
11
12
Ethernet
1
2
Ac
tiv
ity
3
4
Li
nk
/S
pe
St
ac
ki
ng
ed
Po
w
er
VDSL
Switch
-VS2512
R
es
et
D
ia
g
C
on
so
le
VS2512A
10
0-
24
0V
~
50
-6
0
H
z
1A
Figure 3-2. Attaching the Brackets
3-3
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Installing the VDSL Switch and Splitter
2. Mount the device in the rack, using four rack-mounting screws (not provided).
E
xp
ans
io
n
M
od
ule
S
ta
ck
in
g
U
p
D
ow
M
as
n
te
1
r
A
ct
O
O
ivit
2
3
n
ff
y
VDSL
4
5
Li
6
7
nk
8
9
10
11
12
Ethernet
1
2
A
ct
iv
ity
3
4
Li
nk
/S
pe
S
ta
ed
ck
D
in
g
g
P
ow
VDSL
er
Switch
R
es
-VS2512
ia
et
C
on
so
le
VS2512A
10
0-
24
0V
~
50
-6
0
H
z
1A
Figure 3-3. Installing the Switch in a Rack
this chapter.
4. If installing several devices, we recommend using one stack for the switches,
and another for the splitters. this will keep the cabling straight and easy to
maintain.
Desktop or Shelf Mounting
1. Attach the four adhesive feet to the bottom of the first switch.
A
1
z
H
0 6
-
0 5
~
V
0 4 2
-
0 0 1
V S 2 5 1 2 A
C o n s o l e
V - S 2 5 1 2 A
S w i t c h
V D S L
D i a g
R e s e t
P o w e r
S t a c k i n g
4
L i n k / S p e e d
A c t i v i t y
3
1
2
E t h e r n e t
2 1
1 1
0 1
9
8
7
6
L i n k
5
f
O f
O n
4
V D S L
2
3
A c t i v i t y
1
M a s t e r
D o w n
U p
S t i
l e
u
d
o
M
n
i o
s
n
a
p
x
E
Figure 3-4. Attaching the Adhesive Feet
2. Set the device on a flat surface near an AC power source, making sure there
are at least two inches of space on all sides for proper air flow.
3-4
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Mounting
this chapter.
4. If installing multiple switches, attach four adhesive feet to each one. Place each
device squarely on top of the one below, in any order.
Installing an Optional Module into the Switch
Expansion
M
odule
1000BA
SE
SX-S
C
Expansion
M
odule
V
M
2
5
1
2
A
-1
-S
X
-S
C
-M
T
X
R
X
Figure 3-5. Installing an Optional Module
Caution: DO NOT install slide-in modules with the switch powered on. Be sure you
power off the switch before installing any module.
To install an optional module into the switch, do the following:
1. Disconnect power to the switch.
2. Remove the blank metal plate (or a previously installed module) from the
appropriate slot by removing the two screws with a flat-head screwdriver.
3. Before opening the package that contains the module, touch the bag to the
switch casing to discharge any potential static electricity. Also, it is
recommended to use an ESD wrist strap during installation.
4. Remove the module from the anti-static shielded bag.
5. Holding the module level, guide it into the carrier rails on each side and gently
push it all the way into the slot, ensuring that it firmly engages with the
connector.
6. If you are sure the module is properly mated with the connector, tighten the
retainer screws to secure the module in the slot.
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Installing the VDSL Switch and Splitter
Installing a GBIC Transceiver
Figure 3-6. Installing a GBIC Transceiver
Caution: Install only 5 V GBIC transceivers into the module slots.
You can install a GBIC transceiver as described below:
1. Insert the transceiver with the SC connector facing out toward you. Note that
the transceiver is keyed so that it can only be installed in one orientation.
2. Press in on the transceiver’s side tabs, and gently slide it into the GBIC
interface slot until it clicks into place.
Caution: Install only 5 V GBIC transceivers into the module slots.
Note:
GBIC transceivers are hot-swappable. You do not need to power off the switch
before installing or removing a transceiver.
3-6
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Powering On the Switch
Connecting to the Stack’s Backplane
Plug one end of the provided stack cable in the “Down” port of the top unit and the
other end to the “Up” port of the next unit. Repeat this step for each unit in the stack.
Form a simple chain starting at the “Down” port on the top unit and ending at the
“Up” port on the bottom unit (stacking up to 8 units).The VDSL Switch-VS2512A
supports a wrap-around stacking feature. If a connection is made between the
“Down” port of the bottom switch in the stack and the “Up” port of the top switch,
then all switches in the stack will remain connected, even if one fails.
Stacking
Master
On
Of
f
Stacking
Master
n
On
Of
f
Stacking
Master
On
O
ff
Figure 3-7. Connecting to the Stack’s Backplane
Select the Master unit in the stack by pushing the push button in on the front of the
switch.
Note:
Only one switch in the stack can act as Master.
Powering On the Switch
To connect a device to a power source:
1. Insert the power cable plug directly into the receptacle located at the front of the
switch.
VDSL Switch -VS2512A
Console
100-240V ~ 50-60 Hz 1A
VS2512A
Figure 3-8. Power Receptacle
2. Plug the other end of the cable into a grounded, 3-pin socket.
Note:
For International use, you may need to change the AC line cord. You must use
a line cord set that has been approved for the receptacle type in your country.
3-7
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Installing the VDSL Switch and Splitter
3. Check the front-panel LEDs as the switch is powered on to be sure the Power
LED is lit. If not, check that the power cable is correctly plugged in. The switch
will automatically select the setting that matches the connected input voltage.
Therefore, no additional adjustments are necessary when connecting it to any
input voltage within the range marked on the front panel.
4. The switch performs a self-diagnostic test upon power-on.
Note:
The unit supports a “hot remove” feature which permits you to connect or
disconnect network cables without powering off the unit and without disrupting
the operation of the devices attached to the unit.
3-8
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Chapter 4: Making Network Connections
Twisted-Pair Devices
Each device requires an unshielded twisted-pair (UTP) cable with RJ-45 connectors
at both ends. For 100BASE-TX connections, Category 5 cable is required; for
10BASE-T, Category 3, 4 or 5 cable can be used.
Cabling Guidelines
The RJ-45 ports on the switch support automatic MDI/MDI-X operation, so you can
use standard straight-through twisted-pair cables to connect to any other network
device (PCs, servers, switches, routers, or hubs).
Note: Auto-negotiation must be enabled for automatic MDI/MDI-X pinout configuration.
See Appendix B for further information on cabling.
Connecting to the Punch-down Blocks
The splitter connects directly to the PBX and building’s phone-line punch-down
block with RJ-21 connectors. Follow the steps listed below to connect the splitter.
1. Connect one RJ-21 flat cable from the PBX/MDF to the RJ-21 connector on the
back of the splitter labeled “PBX.”
2. Connect the other RJ-21 flat cable from the punch-down block to the RJ-21
connector on the front of the splitter labeled “Line.”
The RJ-21 port on punch-down blocks must be wired to match the pin assignments
of ports on the back of the splitter. To ensure that your cables are properly wired,
Note: If you are using a patch panel, connect the RJ-21 ports on the back of the splitter
directly to the corresponding ports on the patch panel, and then manually wire
each pair (up to 24) from the patch panel to the punch-down blocks.
4-1
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Making Network Connections
.
ES2002-TS
VDSL CPE
Room
Basement
Punch
Down
Blocks
Telephone Line
from Central Office
PBX
PBX/MDF
Line
VDSL
Line
Line
VDSL Splitter -VM2524
VDSL
Splitter
VM2524
100BASE-FX Singlemode Module
VDSL Switch -VS2512A
Stacking
VDSL
Ethernet
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
1
2
3
4
Stacking
Diag
Power
Activity
Link
Activity
Reset
On
Off
VM2512A-4FX-MTRJ-S
Link/Speed
Master
Console
100-240V ~ 50-60 Hz 1A
Up
Down
VS2512A
To ISP Provider
Figure 4-1. Connecting to the Punch-down Blocks
Wiring Closet Connections
Today, the punch-down block is an integral part of many of the newer equipment
racks. It is actually part of the patch panel. Instructions for making connections in the
wiring closet with this type of equipment follows.
1. Connect RJ-21 flat cables from the patch panel to the RJ-21 connectors on the
front of the splitters labeled “Line.”
4-2
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Connecting to the Punch-down Blocks
2. Label the cables to simplify future troubleshooting.
To end users
To ISP (Internet)
Patch Panel
1
0
0
0
B
A
S
E
-
S
X
M
u
l
t
i
m
o
d
e
M
o
d
u
l
e
T
S
V
D
S
L
S
w
i
t
c
h
-
V
S
2
5
1
2
A
Stacking
V
6
D
S
L
7
Ethernet
Expansion Module
1
2
3
4
5
8
9
10
1
1
12
1
2
3
4
Stacking
Diag
Power
Activity
Link
Activity
Reset
TX
RX
On
Off
Link/Speed
VM2512A-1SX-SC-M
Master
l
1
0
0
-
2
4
0
V
~
5
0
-
6
0
H
z
1
A
Up
Down
V
S
2
5
1
2
A
Telephone Line
from Central Office
L
i
n
e
V
D
S
L
S
p
l
i
t
t
e
r
-
VM25
2
4
T
r
S
c
h
/
0
0
3
T
ig
e
r
i
c
h
1
7
2
/1
4
0
L
0
3
r
S
t
t
t
c
h
0
0
0
E
t
h
e
r
n
e
t
V
D
S
L
S
w
i
t
c
h
-
V
S
2
5
1
2
A
6
7
2
V
6
D
S
L
7
Stacking
Stacking
Stacking
Expansion Module
Expansion Module
Expansion Module
1
2
3
4
5
8
9
10
1
1
12
1
2
3
4
Stacking
Diag
Power
Activity
Link
Activity
Reset
On
Off
Link/Speed
Master
Master
Master
onol
1
0
0
-
2
4
0
V
~
5
0
-
6
0
H
z
1
A
V
M
2
5
2
4
Up
p
Down
Dn
Do
VS2512A
L
i
n
e
V
D
S
L
S
p
l
r
-
VM25
2
4
T
ig
e
r
i
c
h
1
/1
4
0
L
0
3
T
r
S
c
h
0
/
0
0
3
7
2
V
D
S
L
S
w
i
t
c
h
-
VS2512A
6
7
2
V
6
D
S
L
7
E
t
h
e
r
n
e
t
1
2
3
4
5
8
9
10
1
1
12
1
2
3
4
Stacking
Diag
Power
Activity
Link
Activity
Reset
On
Off
Link/Speed
onol
V
M
2
5
2
4
V
S
2
5
1
2
A
1
0
0
-
2
4
0
V
~
5
0
-
6
0
H
z
1
A
PBX
T
r
S
c
h
6
7
0
2
/
0
0
3
V
D
S
L
S
w
i
t
c
h
-VS2512A
V
6
D
S
L
7
E
t
h
e
r
n
e
t
1
2
3
4
5
8
9
10
1
1
12
1
2
3
4
Stacking
Diag
Power
Activity
Link
Activity
Reset
On
Off
Link/Speed
Console
1
0
0
-
2
4
0
V
~
5
0
-
6
0
H
z
1
A
V
S2512A
Splitter Stack
Switch Stack
Y cables
Figure 4-2. Wiring Closet Connections
Fiber Optic Devices
An optional slide-in 1000BASE-SX, 1000BASE-LX or 100BASE-FX module, or
1000BASE-X transceiver may be used for backbone and long distance connections,
or for ISP (Internet) connections. A 1000BASE-SX, 100BASE-LX or 1000BASE-X
transceiver may also be used for connecting to a high-speed server.
MT-RJ Connections
Each single-mode device requires a 9/125 micron multimode fiber optic cable with
MT-RJ connectors at both ends. Each multimode device requires a 62.5/125 micron
or 50/125 micron multimode fiber optic cable with MT-RJ connectors at both ends.
1. Remove and keep the MT-RJ port’s plastic cover. When not connected to a
fiber cable, the cover should be replaced to protect the optics.
2. Check that the fiber terminators are clean. Dirty fiber terminators on fiber optic
cables will impair the quality of the light transmitted through the cable and lead
to degraded performance on the port.
3. Connect one end of the cable to the MT-RJ port on the switch and the other end
to the MT-RJ port on the other device. Since MT-RJ connectors are keyed, the
cable can be attached in only one orientation.
4. As each connection is made, check the Link LED on the switch’s front panel for
the corresponding port to be sure that the connection is valid
SC Connections
Each single-imode fiber optic port requires 9/125 micron multimode fiber optic
cabling with an SC connector at both ends. Each multimode fiber optic port requires
50/125 or 62.5/125 micron multimode fiber optic cabling with an SC connector at
both ends. If you need to connect to a device with 62.5/125 micron cable that has
ST-type connectors, Accton provides an optional SC-ST Converter (Part Number:
ST5002).
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Making Network Connections
Caution: This switch uses lasers to transmit signals over fiber optic cable. The lasers are
compliant with the requirements of a Class 1 Laser Product and are inherently
eye safe in normal operation. However, you should never look directly at a
transmit port when it is powered on.
1. Remove and keep the SC port’s rubber cover. When not connected to a fiber
cable, the rubber cover should be replaced to protect the optics.
2. Check that the fiber terminators are clean. You can clean the cable plugs by
wiping them gently with a clean tissue or cotton ball moistened with a little
ethanol. Dirty fiber terminators on fiber cables will impair the quality of the light
transmitted through the cable and lead to degraded performance on the port.
3. Connect one end of the cable to the SC port on the switch and the other end to
the SC port on the other device. Since SC connectors are keyed, the cable can
be attached in only one orientation.
Expansion
M
odule
SC fiber connector
Figure 4-3. Making SC Port Connections
4. As a connection is made, check the Link LED on the switch corresponding to
the port to be sure that the connection is valid.
Note: If you use the optional SC-ST Converter, be sure to connect the converter’s Tx
(Rx) port to the Rx (Tx) port on the other device.
1000BASE-SX, 1000BASE-LX and 1000BASE-LH fiber optic ports operate at
1 Gbps full duplex, with auto-negotiation of flow control. 100BASE-FX connections
operate at 100 Mbps, full duplex, with auto-negotiation of flow control.
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Appendix A: Troubleshooting
Diagnosing Switch Indicators
The VDSL Switch-VS2512A can be easily monitored through panel indicators to
identify problems.The table below describes common problems you may encounter
and possible solutions. If the solutions in the table fail to resolve the problem contact
Accton Technical Support for advice.
Symptom
Cause
Solution
POWER indicator
does not light up
after power on.
Power outlet, power
cord, or internal power
supply may be
• Check the power outlet by plugging in another
device that is functioning properly.
• Check the power cord with another device.
defective.
If these measures fail to resolve the problem, have
the unit’s power supply replaced by a qualified
Accton distributor.
ETHERNET LINK
indicator does not
light up after making
a connection.
Network cable or
Ethernet device
attached to this port
may be defective.
• Verify that the switch and attached device are
powered on.
• Be sure an Ethernet cable is plugged into both the
switch and attached device.
• Verify that the proper cable type is used and its
length does not exceed specified limits.
• Check the network cable connections for possible
defects. Replace the defective cable if necessary.
VDSL LINK
VDSL switch, cabling,
VDSL, VDSL LINE, or
VDSL Switch ports may
be defective.
• Verify that the VDSL switch and attached CPE are
powered on.
indicator does not
light up after making
a connection.
• Be sure the RJ-21 cables are plugged into the
VDSL switch, splitter, and the VDSL punch-down
block/patch panel.
• Verify that the cable length does not exceed
specified limits.
• Check the cable connections on the VDSL switch,
splitter, punch-down block/patch panel, and the
VDSL CPE for possible defects. Replace the
defective cable if necessary.
Power and Cooling Problems
If the power indicator does not turn on when the power cord is plugged in, you may
have a problem with the power outlet, power cord, or internal power supply.
However, if the unit powers off after running for a while, check for loose power
connections, power losses or surges at the power outlet, and verify that the fans on
the unit are unobstructed and running prior to shutdown. If you still cannot isolate the
problem, then the internal power supply may be defective. In this case, contact
Accton Technical Support for assistance.
A-1
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Troubleshooting
Installation
Verify that all system components have been properly installed. If one or more
components appear to be malfunctioning (such as the power cord or network
cabling), test them in an alternate environment where you are sure that all the other
components are functioning properly.
In-Band Access
You can access the management agent in the switch from anywhere within the
attached network using Telnet, a Web browser, or other network management
software such as AccView. However, you must first configure the switch with a valid
IP address, subnet mask, and default gateway. If you have trouble establishing a
link to the management agent, check to see if you have a valid network connection.
Then verify that you entered the correct IP address. Also, be sure the port through
which you are connecting to the switch has not been disabled. If it has not been
disabled, then check the network cabling that runs between your remote location
and the switch.
Note:
You can configure the management agent to accept one to four simultaneous
Telnet sessions. If the maximum number of sessions already exists, an
additional Telnet connection will not be able to log into the system.
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Appendix B: Cables
Specifications
.
Cable Types and Specifications
Max. Length
Cable
Type
Connector
RJ-45
10BASE-T
Cat. 3, 4, 5 100-ohm UTP
100 m (328 ft)
100 m (328 ft)
100BASE-TX Cat. 5 100-ohm UTP
1000BASE-SX 50/125 or 62.5/125 micron core MMF
1000BASE-LX 9/125 micron SMF
RJ-45
See the following table SC or ST
5 km (3.12 miles)
70 km (43.5 miles)
SC or ST
SC or ST
MTRJ
1000BASE-LH 9/125 micron SMF
100BASE-FX 50/125 or 62.5/125 micron multimode fiber 2 km (1.24 miles)
optic cable
100BASE-FX 9/125 micron single-mode fiber optic cable 20 km (12.43 miles)
MTRJ
RJ-45
1000BASE-T Cat. 5, 5e 100-ohm UTP
100 m (328 ft)
1000BASE-SX Fiber Specifications
Fiber Diameter
Fiber Bandwidth
160 MHz/km
200 MHz/km
400 MHz/km
500 MHz/km
Maximum Cable Length
62.5/125 micron MMF
2-220 m (7-722 ft)
2-275 m (7-902 ft)
2-500 m (7-1641 ft)
2-550 m (7-1805 ft)
50/125 micron MMF
Twisted-Pair Cable and Pin Assignments
Caution: DO NOT plug a phone jack connector into any RJ-45 port. Use only twisted-pair
cables with RJ-45 connectors that conform with FCC standards.
Caution: Each wire pair must be attached to the RJ-45 connectors in a specific
Figure B-1 illustrates how the pins on the RJ-45 connector are numbered. Be sure to
hold the connectors in the same orientation when attaching the wires to the pins.
Figure B-1. RJ-45 Connector Pin Numbers
B-1
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Cables
10BASE-T/100BASE-TX Pin Assignments
For 100BASE-TX/10BASE-T connections, a twisted-pair cable must have two pairs
of wires. Each wire pair is identified by two different colors. For example, one wire
might be red and the other, red with white stripes. Also, an RJ-45 connector must be
attached to both ends of the cable.
With 100BASE-TX/10BASE-T cable, pins 1 and 2 are used for transmitting data, and
pins 3 and 6 for receiving data.
RJ-45 Pin Assignments
1
Pin Number
Assignment
Tx+
1
2
3
6
Tx-
Rx+
Rx-
1: The “+” and “-” signs represent the polarity of the wires
that make up each wire pair.
Because all ports on this switch support automatic MDI/MDI-X operation, you can
use straight-through cables for all network connections to PCs or servers, or to other
switches or hubs. In straight-through cable, pins 1, 2, 3, and 6, at one end of the
cable, are connected straight through to pins 1, 2, 3 and 6 at the other end of the
cable. The table below shows the 10BASE-T/100BASE-TX MDI and MDI-X port
pinouts.
Pin
MDI-X Assignment
Input Receive Data +
MDI Assignment
Output Transmit Data +
Output Transmit Data -
Input Receive Data +
Input Receive Data -
1
2
3
6
Input Receive Data -
Output Transmit Data +
Output Transmit Data -
No other pins are used.
Note: Auto-negotiation must be enabled for automatic MDI/MDI-X pinout configuration.
B-2
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Twisted-Pair Cable and Pin Assignments
1000BASE-T Pin Assignments
1000BASE-T ports switch support automatic MDI/MDI-X operation, so you can use
straight-through cables for all network connections to PCs or servers, or to other
switches or hubs.
The table below shows the 1000BASE-T MDI and MDI-X port pinouts. These ports
require that all four pairs of wires be connected. Note that for 1000BASE-T
operation, all four pairs of wires are used for both transmit and receive.
Use 100-ohm Category 5 or 5e unshielded twisted-pair (UTP) or shielded
twisted-pair (STP) cable for 1000BASE-T connections. Also be sure that the length
of any twisted-pair connection does not exceed 100 meters (328 feet)
.
Pin
1
MDI Signal Name
MDI-X Signal Name
Transmit Data plus (TD1+)
Receive Data minus (RD1-)
Transmit Data plus (TD2+)
Transmit Data plus (TD3+)
Receive Data minus (RD3-)
Receive Data minus (RD2-)
Transmit Data plus (TD4+)
Receive Data minus (RD4-)
Transmit Data plus (TD2 +)
Receive Data minus (RD2-)
Transmit Data plus (TD1+)
Transmit Data plus (TD4+)
Receive Data minus (RD4-)
Receive Data minus (RD1-)
Transmit Data plus (TD3+)
Receive Data minus (RD3-)
2
3
4
5
6
7
8
1000BASE-T Cable Requirements
All Category 5 UTP cables that are used for 100BASE-TX connections should also
work for 1000BASE-T, providing that all four wire pairs are connected. However, it is
recommended that for all critical connections, or any new cable installations,
Category 5e (enhanced Category 5) cable should be used. The Category 5e
specification includes test parameters that are only recommendations for Category
5. Therefore, the first step in preparing existing Category 5 cabling for running
1000BASE-T is a simple test of the cable installation to be sure that it complies with
the IEEE 802.3ab standards.
Cable Testing for Existing Category 5 Cable
Installed Category 5 cabling must pass tests for Attenuation, Near-End Crosstalk
(NEXT), and Far-End Crosstalk (FEXT). This cable testing information is specified in
the ANSI/TIA/EIA-TSB-67 standard. Additionally, cables must also pass test
parameters for Return Loss and Equal-Level Far-End Crosstalk (ELFEXT). These
tests are specified in the ANSI/TIA/EIA-TSB-95 Bulletin, “The Additional
Transmission Performance Guidelines for 100 Ohm 4-Pair Category 5 Cabling.”
Note that when testing your cable installation, be sure to include all patch cables
between switches and end devices.
B-3
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Cables
Adjusting Existing Category 5 Cabling to Run 1000BASE-T
If your existing Category 5 installation does not meet one of the test parameters for
1000BASE-T, there are basically three measures that can be applied to try and
correct the problem:
1. Replace any Category 5 patch cables with high-performance Category 5e
cables.
2. Reduce the number of connectors used in the link.
3. Reconnect some of the connectors in the link.
RJ-21 Port Pin Assignments
The PBX/MDF connector is designed to aggregate 24 POTS/ISDN ports. Each wire
pair must be attached to the RJ-21 connector in a specific orientation detailed below.
The following tables shows the pin assignments.
25
1
female
connector
50
26
Pins
1,26
Circuit
Pins
Circuit
Pins
Circuit
Pins
Circuit
1,Ring/Tip 7,32
2,Ring/Tip 8,33
3,Ring/Tip 9,34
4,Ring/Tip 10,35
5,Ring/Tip 11,36
6,Ring/Tip 12,37
7,Ring/Tip 13,38
8,Ring/Tip 14,39
9,Ring/Tip 15,40
10,Ring/Tip 16,41
11,Ring/Tip 17,42
12,Ring/Tip 18,43
13,Ring/Tip 19,44
14,Ring/Tip 20,45
15,Ring/Tip 21,46
16,Ring/Tip 22,47
17,Ring/Tip 23,48
18,Ring/Tip 24,49
19,Ring/Tip
20,Ring/Tip
21,Ring/Tip
22,Ring/Tip
23,Ring/Tip
24,Ring/Tip
2,27
3,28
4,29
5,30
6,31
The VDSL Line connector is designed to aggregate 24 VDSL ports. The following
table shows the pin assignments.
Pins
1,26
Circuit
Port 1
Pins
7,32
Circuit
Port 7
Pins
13,38
14,39
15,40
16,41
17,42
18,43
Circuit
Port 13
Pins
19,44
20,45
21,46
22,47
23,48
24,49
Circuit
Port 19
2,27
3,28
4,29
5,30
6,31
Port 2
Port 3
Port 4
Port 5
Port 6
8,33
Port 8
Port 14
Port 15
Port 16
Port 17
Port 18
Port 20
Port 21
Port 22
Port 23
Port 24
9,34
Port 9
10,35
11,36
12,37
Port 10
Port 11
Port 12
B-4
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Console Port Pin Assignments
Console Port Pin Assignments
The DB-9 serial port on the switch’s front panel is used to connect to the switch for
out-of-band console configuration. The on-board menu-driven configuration program
can be accessed from a terminal or a PC running a terminal emulation program. The
pin assignments used to connect to the serial port are provided in the following
tables.
Figure 2-1. DB-9 Console Port Pin Numbers
DB-9 Port Pin Assignments
EIA
CCITT
Description
Switch’s
DB9 DTE
Pin #
PC DB9
DTE
Pin #
PC DB25
DTE
Pin #
Circuit Signal
BB
104
103
102
RxD (Received Data)
TxD (Transmitted Data)
SG (Signal Ground)
2
2
3
5
3
2
7
BA
AB
3
5
No other pins are used.
Console Port to 9-Pin DTE Port on PC
Switch’s 9-Pin
Serial Port
Null Modem
PC’s 9-Pin
DTE Port
2 RXD
3 TXD
<---------
-----------
-----------
TXD
------------
---------->
----------
3 TXD
RXD
2 RXD
5 SGND
SGND
5 SGND
No other pins are used.
Console to 25-Pin DTE Port on PC
Switch’s 9-Pin
Serial Port
Null Modem
PC’s 25-Pin
DTE Port
2 RXD
3 TXD
<---------
-----------
-----------
TXD
------------
---------->
----------
2 TXD
RXD
3 RXD
7 SGND
5 SGND
SGND
No other pins are used.
B-5
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Cables
B-6
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Appendix C: Specifications
VDSL Switch
Model
VDSL Switch-VS2512A
Physical Characteristics
VDSL Specificationss
Supports evolving ETSI, ANSI and ITU standards
Modulation: 4 to 256 QAM Frequency Division Duplexing
Data Rate:Up to 15 Mbps symmetric
Range: Up to 1525 m (5000 ft)
Ports
1 RJ-21 Port (contains 12 VDSL lines)
1 Stacking Port Pair
1 Slide-in Module Slot
Interfaces
VDSL Line: RJ-21 flat cable
Stacking Ports: IEEE 1394 FireWire connectors
Buffer Architecture
16 Mbytes
Switch Fabric Bandwidth
9.8 Gbps
Switching Database
8K MAC address entries
LEDs
System: Power, Diag., Stacking, Master
VDSL Port: Link, Activity
Ethernet Port: Link/Speed, Activity
Weight
3.94 kg (8 lbs 11 oz)
Size
44.0 x 35.2 x 4.4 cm (17.4 x 13.9 x 1.7 in.)
Temperature
Operating: 0 to 50 °C (32 to 122 °F)
Storage: -40 to 70 °C (-40 to 158 °F)
C-1
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Specifications
Humidity
Operating: 5% to 90%
AC Input
100 to 240 V, 50 to 60 Hz
Power Consumption
40 Watts maximum
Heat Dissipation
137 BTU/hr maximum
Maximum Current
0.5 A @ 110 VAC
0.25 A @ 240 VAC
Switch Features
Spanning Tree Protocol
Forwarding Mode
Store-and-forward
Throughput
Layer 2: wire speed
Flow Control
Full Duplex: IEEE 802.3x
Half Duplex: Back pressure
Broadcast Storm Suppression
Traffic throttled above a critical threshold
VLAN Support
Up to 255 groups; port-based or with 802.1Q VLAN tagging
Private VLAN feature
GVRP for automatic VLAN learning
Quality of Service
Four levels of priority and Weighted Round Robin Queueing; Quality of Service
based on DSCP, IP Precedence/TOS, TCP/UDP port number
VDSL Bandwidth Control
Rate Limiting
C-2
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VDSL Switch
Management Features
In-Band Management
Telnet, Web-based HTTP, or SNMP manager
(AccView Network Management software provided free)
Out-of-Band Management
RS-232 DB-9 console port
Software Loading
TFTP in-band or XModem out-of-band
MIB Support
MIB-II (RFC1213), Interfaces Evolution MIB (RFC 2863), Ethernet-Like MIB
(RFC 2665), Bridge MIB (RFC 1493), Extended Bridge MIB: P-bridge,
Q-bridge (RFC2674), RMON MIB (RFC 2819), Entity MIB (RFC 2737),
RADIUS authentication client MIB (RFC 2618), Accton’s private MIB
RMON Support
Groups 1, 2, 3, 9 (Statistics, History, Alarm, Event)
Additional Features
Port Trunks
Port Mirroring
Standards
IEEE 802.3 Ethernet, IEEE 802.3u Fast Ethernet,
IEEE 802.1D Spanning Tree Protocol and traffic priorities,
IEEE 802.1p priority tags, IEEE 802.1Q VLAN,
IEEE 802.3ac VLAN tagging,
IEEE 802.3x full-duplex flow control (ISO/IEC 8802-3)
SNMP (RFC 1157), RMON (RFC 1757 groups 1,2,3,9), ARP (RFC 826),
ICMP (RFC 792), IP (RFC 791, UDP (RFC 768), TCP (RFC 793),
TFTP (RFC 783, TELNET (RFC 854-859), SMI (RFC 1155), Traps (RFC1215),
HTML (RFC1866), HTTP (RFC 2068)
Compliances
CE Mark
Emissions
FCC Class A
Industry Canada Class A
EN55022 (CISPR 22) Class A
EN 61000-3-2/3
VCCI Class A
C-3
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Specifications
Immunity
EN 61000-4-2/3/4/5/6/8/11
Safety
CSA/NRTL (CSA 22.2.950 & UL 1950)
EN 60950 (TÜV/GS)
CB (UEC60950)
Warranty
Limited Lifetime
VDSL Splitter
Models
VM2524
VM2548
Ports
VM2524: 1 RJ-21 Port (contains 24 VDSL lines)
VM2548: 2 RJ-21 Ports (each port contains 24 VDSL lines)
Network Interface
RJ-21 flat cable
Weight
3 kg (6 lbs 10 oz)
Size
44.0 x 35.2 x 4.4 cm (17.4 x 13.9 x 1.7 in.)
Temperature
Operating: 0 to 50 °C (32 to 122 °F)
Storage: -40 to 70 °C (-40 to 158 °F)
Humidity
Operating: 5% to 90%
AC Input
100 to 240 V, 50 to 60 Hz
CE Mark
Emissions
FCC Class A
Industry Canada Class A
EN55022 (CISPR 22) Class A
EN 61000-3-2/3
VCCI Class A
C-4
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Slide-in Modules
Immunity
EN 61000-4-2/3/4/5/6/8/11
Safety
CSA/NRTL (CSA 22.2.950 & UL 1950)
EN60950 (TÜV/GS)
CB (UEC60950)
Warranty
Limited Lifetime
Slide-in Modules
1000BASE-SX Extender Module
Model
VM2512A-SX-SC-M
Ports
1 1000BASE-SX SC-type port
Network Interface
SC connector, 50/125 or 62.5/125 micron multimode fiber cable
Operating Mode
Fixed at 1000 Mbps, full duplex
Auto-negotiation of flow control
Standards
IEEE 802.3z Gigabit Ethernet
1000BASE-LX Extender Module
Model
VM2512A-LX-SC-S
Ports
1 1000BASE-LX SC-type port
Network Interface
SC connector, 9/125 micron single-mode fiber cable
Operating Mode
Fixed at 1000 Mbps, full duplex
Auto-negotiation of flow control
Standards
IEEE 802.3z Gigabit Ethernet
C-5
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Specifications
1000BASE-T Extender Module
Model
VM2512A-1GT
Ports
1 1000BASE-T RJ-45 port
Network Interface
RJ-45 connector, 100-ohm Category 5 or 5e twisted-pair cable (using all four wire
pairs)
Operating Mode
1 Gbps, full duplex, autonegotiation of speed and flow control
10/100 Mbps, full and half duplex, autonegotiation of speed, duplex mode, and flow
control
Standards
IEEE 802.3ab
100BASE-FX Extender Modules
Models
VS2512A-4FX-MTRJ-M
VS2512A-4FX-MTRJ-S
VM2512A-1FX-SC-M
Ports
VS2512A-4FX-MTRJ-M and VS2512A-4FX-MTRJ-S
4 1000BASE-FX MT-RJ ports
VM2512A-1FX-SC-M
1 1000BASE-FX SC port
Network Interface
50/125 or 62.5/125 micron multimode fiber cable
9/125 micron single-mode fiber cable
Operating Mode
Fixed at 100 Mbps, full duplex
Auto-negotiation of flow control
Standards
IEEE 802.3u
C-6
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Slide-in Modules
10/100BASE-TX Extender Modules
Models
VS2512A-4TX
VS2512A-1TX
Ports
VS2512A-4TX
4 10/100BASE-T RJ-45 ports
VS2512A-1TX
1 10/100BASE-T RJ-45 port
Network Interface
RJ-45 connector, 100-ohm , UTP cable
10BASE-T - Categories 3, 4, or 5
100BASE-TX - Category 5
Operating Mode
10/100 Mbps, full and half duplex
Auto-negotiation of speed and flow control
Standards
IEEE 802.3
IEEE 802.3u
IEEE 802.3x
1000BASE-X GBIC Module
Model
VM2512A-1GX-GBIC
Ports
1 slot for GBIC transceivers
Network Interface
50/125 micron or 62.5/125 micron multimode fiber
9/125 micron single-mode fiber cable
Operating Mode
Fixed at 1000 Mbps, full duplex
Standards
IEEE 802.3z
C-7
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Specifications
C-8
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Slide-in Modules
C-9
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Specifications
C-10
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Appendix D: Ordering Information
VDSL Switch-VS2512A Products and Accessories
Description
Product Number
VS2512A
12-port VDSL switch with one media expansion slot
24-port VDSL switch with one media expansion slot and one SFP slot
24-port VDSL Splitter
VS2524
VM2524
VM2548
48-port VDSL Splitter
ES2002-TS
VS2524-1SX-SC-M
VS2524-1LX-SC-S
VDSL CPE
Gigabit module with one 1000BASE-SX multimode fiber port (SC connector)
Gigabit module with one 1000BASE-LX single-mode fiber port (SC
connector)
VS2524-1GT
Gigabit module with one 1000BASE-T port (RJ-45 connector)
Gigabit module with one slot for GBIC transceivers
VS2524-1GX-GBIC
VS2512A-4TX
10/100-BASE-TX module with 4 RJ-45 ports
VS2512A-1TX
10/100-BASE-TX module with 1 RJ-45 port
VS2512A-4FX-MTRJ-M
VS2512A-4FX-MTRJ-S
VS2512A-1FX-SC-M
100BASE-FX module with 4 multimode fiber ports (MT-RJ connector)
100BASE-FX module with 4 single-mode fiber ports (MT-RJ connector)
100BASE-FX module with 1 multimode fiber ports (SC connector)
D-1
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Ordering Information
D-2
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Glossary
10BASE-T
IEEE 802.3 specification for 10 Mbps Ethernet over two pairs of Category 3, 4, or 5
UTP cable.
100BASE-FX
IEEE 802.3u specification for 100 Mbps Fast Ethernet over two strands of 50/125 or
62.5/125 micron core fiber cable.
100BASE-TX
IEEE 802.3u specification for 100 Mbps Fast Ethernet over two pairs of Category 5
UTP cable.
1000BASE-LX
IEEE 802.3z specification for Gigabit Ethernet over two strands of 50/125, 62.5/125
or 9/125 micron core fiber cable.
1000BASE-LH
Gigabit Ethernet over two strands of 9/125 micron core fiber cable.
1000BASE-SX
IEEE 802.3z specification for Gigabit Ethernet over two strands of 50/125 or
62.5/125 micron core fiber cable.
1000BASE-T
IEEE 802.3ab specification for Gigabit Ethernet over 100-ohm Category 5 or 5e
twisted-pair cable (using all four wire pairs).
Auto-Negotiation
Signalling method allowing each node to select its optimum operational mode (e.g.,
10 Mbps or 100 Mbps and half or full duplex) based on the capabilities of the node to
which it is connected.
Bandwidth
The difference between the highest and lowest frequencies available for network
signals. Also synonymous with wire speed, the actual speed of the data
transmission along the cable.
Collision
A condition in which packets transmitted over the cable interfere with each other.
Their interference makes both signals unintelligible.
Glossary-1
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Glossary
Collision Domain
Single CSMA/CD LAN segment.
Customer Premises Equipment (CPE)
Terminating equipment, such as terminals, phones, routers and routers, supplied by
the phone company, installed at customer sites, and connected to the phone
company network.
CSMA/CD
CSMA/CD (Carrier Sense Multiple Access/Collision Detect) is the communication
method employed by Ethernet, Fast Ethernet, or Gigabit Ethernet.
End Station
A workstation, server, or other device that does not forward traffic.
Ethernet
A network communication system developed and standardized by DEC, Intel, and
Xerox, using baseband transmission, CSMA/CD access, logical bus topology, and
coaxial cable. The successor IEEE 802.3 standard provides for integration into the
OSI model and extends the physical layer and media with repeaters and
implementations that operate on fiber, thin coax and twisted-pair cable.
Fast Ethernet
A 100 Mbps network communication system based on Ethernet and the CSMA/CD
access method.
Fiber to the Home (FTTH)
A network where an optical fiber runs from the service provider to the subscriber's
premises or home.
Gigabit Ethernet
A 1000 Mbps network communication system based on Ethernet and the CSMA/CD
access method.
Full Duplex
Transmission method that allows two network devices to transmit and receive
concurrently, effectively doubling the bandwidth of that link.
IEEE
Institute of Electrical and Electronic Engineers.
IEEE 802.3
Defines carrier sense multiple access with collision detection (CSMA/CD) access
method and physical layer specifications.
Glossary-2
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Glossary
IEEE 802.3ab
Defines CSMA/CD access method and physical layer specifications for
1000BASE-T Fast Ethernet.
IEEE 802.3u
Defines CSMA/CD access method and physical layer specifications for
100BASE-TX Fast Ethernet.
IEEE 802.3x
Defines Ethernet frame start/stop requests and timers used for flow control on
full-duplex links.
IEEE 802.3z
Defines CSMA/CD access method and physical layer specifications for 1000BASE
Gigabit Ethernet.
LAN Segment
Separate LAN or collision domain.
LED
Light emitting diode used for monitoring a device or network condition.
Local Area Network (LAN)
A group of interconnected computer and support devices.
Main Distribution Frame (MDF)
The termination equipment where outside telephone lines connect to a building or
site.
Media Access Control (MAC)
A portion of the networking protocol that governs access to the transmission
medium, facilitating the exchange of data between network nodes.
Multiple Tenant Units (MTU)
A building that contains more than a single tenant, such as an apartment block,
office complex, or hotel.
MIB
An acronym for Management Information Base. It is a set of database objects that
contains information about the device.
Network Diameter
Wire distance between two end stations in the same collision domain.
Glossary-3
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Glossary
Private Branch Exchange (PBX)
A telephone exchange local to a particular organisation who use, rather than
provide, telephone services.
POTS
Plain Old Telephone Service.
Redundant Power Unit (RPU)
A backup power supply that automatically takes over in case the primary power
supply should fail.
RJ-45 Connector
A connector for twisted-pair wiring.
Splitter
A filter to separate DSL signals from POTS signals to prevent mutual interference.
Switched Ports
Ports that are on separate collision domains or LAN segments.
Transmission Control Protocol/Internet Protocol (TCP/IP)
Protocol suite that includes TCP as the primary transport protocol, and IP as the
network layer protocol.
UTP
Unshielded twisted-pair cable.
VDSL
Very high data rate Digital Subscriber Line: A family of digital telecommunications
protocols designed to allow high speed data communication at data rates from 12.9
to 52.8 Mbps with corresponding maximum reach ranging from 4500 feet to 1000
feet of 24 gauge twisted pair cable over the existing copper telephone lines.
Virtual LAN (VLAN)
A Virtual LAN is a collection of network nodes that share the same collision domain
regardless of their physical location or connection point in the network. A VLAN
serves as a logical workgroup with no physical barriers, allowing users to share
information and resources as though located on the same LAN.
Glossary-4
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Index
Numerics
G
GVRP 1-3
I
installation
problems A-2
A
applications
B
K
L
LED indicators
Power 1-7
problems A-1
C
cable
specifications B-1
compliances
M
management
agent 1-3
out-of-band 1-3
SNMP 1-3
Web-based 1-3
modules
D
mounting the switch
E
Extender C-7
F
features C-2
system 1-12
Index-1
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Index
multimode and single-mode fiber optic
cables 4-3
specifications
N
network
1000BASE-LX C-5
1000BASE-SX C-5
compliances C-3
physical C-1
VDSL C-1
standards
O
optional
P
pin assignment
RJ21 B-4
1000BASE-T B-3
10BASE-T/100BASE-TX B-2
DB-9 B-5
compliance C-3
IEEE C-3
T
tags
Q
QoS 1-3
priority 1-4
VLAN 2-3
Telnet A-2
R
Remote 2-2
troubleshooting
RJ-45 ports
connections 4-1
pinouts B-3
RMON 1-3
V
tagging 2-3
W
S
sample applications
Index-2
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Index
Index-4
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VS2412A
VM2524, VM2548
E072002-R01
150000010100A
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