3Com DIA3CV1100-02 User Manual
Visitor and Community
Network Access
Concentrator
NSTALLATION
I
Version 2.0
G
UIDE
http://www.3com.com/
Part No. DIA3CV1100-02
Published July 2000
3Com Corporation
5400 Bayfront Plaza
Santa Clara, California
95052-8145
Copyright © 1999, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced
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UNITED STATES GOVERNMENT LEGEND
If you are a United States government agency, then this documentation and the software described herein are
provided to you subject to the following:
All technical data and computer software are commercial in nature and developed solely at private expense.
Software is delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or
as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rights as are
provided in 3Com’s standard commercial license for the Software. Technical data is provided with limited rights
only as provided in DFAR 252.227-7015 (Nov 1995) or FAR 52.227-14 (June 1987), whichever is applicable.
You agree not to remove or deface any portion of any legend provided on any licensed program or
documentation contained in, or delivered to you in conjunction with, this User Guide.
Portions of this documentation are reproduced in whole or in part with permission from (as appropriate).
Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may
not be registered in other countries.
3Com, the 3Com logo and SuperStack, are registered trademarks of 3Com Corporation. 3Com Facts is a
service mark of 3Com Corporation.
MS Windows, and Windows NT are registered trademarks of Microsoft Corporation. All other company and
product names may be trademarks of the respective companies with which they are associated.
Guide written by Ruth Zach and Ronald Schwarz. Illustrated by Pearl Goldberg and Ronald Schwarz. Produced
by 3Com Corporation.
ONTENTS
C
V
ISITOR AND COMMUNITY NETWORK ACCESS CONCENTRATOR
I
NSTALLATION GUIDE
About This Guide 5
System Overview 6
VCN Access Concentrator Functionality 6
Operational Controls 6
Safety Precautions 8
Précautions de Sécurité 9
Sicherheitsvorkehrungen 9
Preparing the Site for the VCN Access Concentrator 10
Installing the VCN Access Point Punch-down Block with a Patch
Panel 11
Installing the VCN Access Point Punch-Down Block Without a Patch
Panel 13
Installing the VCN Access Concentrator 16
Mounting the VCN Access Concentrator in the 19-inch Rack 16
Connecting Cables to the Rack Via Patch Panel 18
Note on Insertion of Line Cards in the VCN Access Concentrator 21
Connecting Cables to the Rack Without a Patch Panel 21
Mounting the Ethernet Switch 24
Configuring the Ethernet Switch for the VCN Access Concentrator 24
Powering Up the Ethernet Switch 33
Powering Up the VCN Access Concentrator 33
Proper Selection of Power Cord 33
Selection Du Cable D'alimentation 34
Richtige Auswahl des Stromkabels 34
Troubleshooting 35
Power-on Self Test (POST) 35
Using Front Panel LEDs to Solve Problems 36
A
P
RODUCT SPECIFICATION
I
NDEX
G
LOSSARY
3COM C
EMC S
S
AFETY STATEMENT
ORPORATION LIMITED WARRANTY
TATEMENTS
ISITOR AND
V
OMMUNITY
C
About This Guide
ETWORK
N
ONCENTRATOR INSTALLATION
C
UIDE
G
This guide contains information about the following:
■ System Overview
■ VCN Access Concentrator Functionality
■ Operational Controls
■ Safety Precautions
■ Preparing the Site for the VCN Access Concentrator
■ Installing the VCN Access Concentrator
■ Powering Up the Ethernet Switch
■ Powering Up the VCN Access Concentrator
The NCU (Network Concentration Unit) name has been changed in
Release II and is referred to as Visitor and Community Network Access
Concentrator.
A
CCESS
For more information, see the Visitor and Community Network Access
Concentrator Service Manual. VCN System documentation and software
can be obtained from the site: http://support.3com.com.
Look there under Broadband Access where you will be able to select
Download Software
To download documentation, select
product family Visitor and Community Network System.
To download software, select
and select the product family Visitor and Community Network System.
or
Find Documentation
Find Documentation
Download Software
.
and select the
; click
public area,
6 Visitor and Community Network Access Concentrator Installation Guide
System Overview
The Visitor and Community Network provides fast Internet connectivity
and fast corporate access to end-users of up to 10 Mbps full duplex, over
an existing cabling infrastructure and supports all Plain Old Telephone
Services (POTS).
The Visitor and Community Network System serves the following
applications:
■ Multiple Dwelling Units (MDU)
MDUs include apartment houses and hotels.
■
The customers that benefit include tenants and hotel guests who
receive Internet services and use e-mail over much more
convenient connections than currently possible. Business travelers
can access corporate intranets at faster speeds. IT service providers
and hotel operators can expand end-user services (video, virtual
gaming, etc.) in conjunction with billing services without forfeiting
POTS revenues. NSPs and ISPs benefit by expanding service
boundaries to E-commerce and local network applications.
■ Multiple Tenant Units (MTU)
MTUs comprise mainly office complexes.
■
In MTU application existing LAN infrastructure can be extended to
4 kilo feet to locations currently lacking LAN cabling through the
Visitor and Community Network system.
VCN Access Concentrator Functionality
Operational Controls
The function of the VCN AC is to combine data and analog voice in the
direction of the VCN APs (VCN Access Point) and to split voice and data in
the direction from the VCN APs. Analog voice (telephone) is routed to the
analog PBX. Data is transferred to the Ethernet Switch. The VCN AC
allows simultaneous transfer of voice and data, up to 10 Mbps, on each
telephone extension line.
The VCN AC works with the SuperStack II Switch 1100 and 3300.
Figure 1 and Figure 2 show the VCN AC LED indicators and connectors
on the front and back panels.
Operational Controls 7
LAN LED
LAN Port
Line LED
Power LE D
Figure 1
2
1
VCN Access Concentrator Front Panel
3 4 5 6 7 8 9101112131415161718192021222324
Local Management Access
(LMA) (hidden connectors)
Figure 2
C
VCN Access Concentrator Back Panel
From Access Points
N151
MIC
US
!
TO PBX
AC-INPUT
1
1
90 - 240 V AC
RJ-21 Connected to
the VCN AC lines
RJ-21
ac power input
Connected to
the analog PBX
lines
8 Visitor and Community Network Access Concentrator Installation Guide
Table 1 describes the front panel VCN AC indicators and connectors.
Ta b le 1 VCN AC Front Panel LEDs and Connectors
Item Type State Used to
LAN LED Green Indicate connection of the VCN AC
LAN RJ-45 port - Connect the VCN AC to the
Line LED OFF Indicate VCN AC is not connected
Flashing Green Indicate data transmission over the
Power LED OFF Indicate that the VCN AC is not
Orange Indicate that the power-on self-test
Green Indicate that the unit is functional.
Local
Management
Access (LMA)
4-pin
MiniDin
connectors
(hidden)
- Connect ASCII terminal for
to the Ethernet Switch.
Ethernet Switch.
to the line.
VDSL line.
powered.
failed if LED remains orange for
more than 30 seconds.
monitoring and troubleshooting.
The cover must be removed to
attain access to the hidden
connectors. Refer to the Visitor and
Community Network Access
Concentrator for details about
troubleshooting, monitoring and
downloading software.
Safety Precautions
Please follow these precautions before installing the Visitor and
Community Network Access Concentrator:
WARNING:
Do not plug in, turn on or attempt to operate an obviously
damaged unit.
CAUTION:
All servicing should be undertaken ONLY by qualified service
personnel. There are no user serviceable parts inside the unit.
WARNING:
socket
CAUTION:
Be sure to unplug the power supply cord from the wall
before
attempting to remove and/or replace the power supply.
Do not operate the unit in location where the maximum
ambient temperature exceeds 40 degrees C.
Précautions de Sécurité 9
Précautions de Sécurité
CAUTION:
not obstructed.
CAUTION:
100-120 VAC or 200-240 VAC, 60/50 Hz, as indicated on the safety label
adjacent to the power inlet. Ensure that the available voltage supply at
the mains is within one of these two ranges.
AVERTISSEMENT:
brancher au secteur, ni tenter de la mettre en fonction.
ATTENTION:
personnel qualifié. L'unité ne comporte pas de pièces à remplacer par
l'utilisateur.
AVERTISSEMENT:
d'alimentation électrique de la prise de courant AVANT d'essayer de
démonter le bloc d'alimentation.
ATTENTION:
température ambiante dépasse 40 degrés C.
ATTENTION:
pas obturees.
Ensure that the chassis ventilation openings in the unit are
The power supply provided for automatic selection of either
Si l'unité est visiblement endommagée NE PAS la
Toute intervention sera effectuée UNIQUEMENT par un
Assurez vous que vous avez bien débranché le câble
Ne pas faire fonctionner l'unité dans un endroit où la
Vérifiez que les ouvertures de ventilation du châssis ne sont
Sicherheitsvorkehru
ngen
ATTENTION:
tension d'entrée (soit 100-120 V soit 200-240 V, alternatif 60/50 Hz)
comme indiqué sur l'étiquette de sécurité apposé à côté de la prise.
Assurez-vous que la tension disponible au secteur se trouve dans la plage
appropriée.
WARNUNG:
Stromnetz an, schalten diese ein oder versuchen diese zu benutzen,
wenn die Einheit klar erkennbar beschädigt ist.
VORSICHT:
Wartungspersonal durchgeführt werden. Die Einheit enthält keine Teile,
die der Benutzer selbst warten kann.
Le bloc d'alimentation sélectionne automatiquement la
Schließen Sie die Einheit
Alle Wartungsdienste sollten nur von qualifiziertem
unter keinen Umständen
an das
10 Visitor and Community Network Access Concentrator Installation Guide
Preparing the Site for the VCN Access Concentrator
WARNUNG:
Ziehen Sie den Stromstecker aus der Steckdose,
bevor
Sie
die Energieversorgung entfernen und/oder austauschen.
VORSICHT:Bedienen
Sie die Einheit
nicht
, wenn die Temperatur am
Standort 40 Grad C übersteigt.
VORSICHT:
Gewährleisten Sie, daß die Ventilationsöffnungen des Chassis
der Einheit nicht blockiert sind.
VORSICHT:
Die Energieversorgung wählt automatisch entweder 100-120
V WS oder 200-240 V WS, 60/50 Hz, wie auf dem Sicherheitsaufkleber
neben der Energiezufuhr angegeben. Gewährleisten Sie, daß die
vorhandene Stromleistung des Hauptstromnetzes innerhalb eines dieser
möglichen Bereiche liegt.
The punch-down block that connects POTS terminals to a PBX is known
as the PBX punch-down block. Figure 3 displays the infrastructure before
the Visitor and Community Network system is installed.
Figure 3 Before the VCN Access Concentrator is Installed
Room
Basement
Punch-Down Blocks
PBX
Before installing the VCN AC in the communications room, perform the
following tasks:
Install the VCN AP punch-down block in addition to the existing
1
punch-down block.
Install a rack for the VCN AC.
2
Preparing the Site for the VCN Access Concentrator 11
Installing the VCN
Access Point
Punch-down Block
with a Patch Panel
CAUTION:
technician
Installation should be performed only by a qualified
The VCN AP punch-down block, which carries both data and voice, can
be connected to an optional patch panel, which connects the circuits
between the VCN AC and punch-down blocks.
If there is no patch panel, the VCN AC unit connects directly to the VCN
AC punch-down block and VCN AP punch-down blocks.
The VCN AC unit should be installed at the PBX punch-down block
location, usually in the basement or wiring closet of a building.
The unit is installed in a 19-inch rack along with the Ethernet switch and
an optional patch panel.
There are two methods for installing the Visitor and Community Network
system:
■ With a patch panel.
■ Without a patch panel.
To install the VCN AP punch-down block when there is a patch panel,
perform the following steps:
Select the wire pairs according to their position in the RJ-11 telephone
1
connector in the rear of the VCN AP. The two outside wires comprise the
outer wire pair and the two inside wires comprise the inner wire pair, as
shown in Figure 4 and Figure 5.
Where there is only one telephone line in a room, the two wires are
connected to the inner wire pair of the phone connector shown in
Figure 4 and Figure 5. The outer wire pair of the phone connector is not
used.
The inner wire pair carries both voice and digital date.
■
12 Visitor and Community Network Access Concentrator Installation Guide
■ The outer wire pair carries only voice.
Figure 4 VCN Access Point Rear Panel
PHONE
LINE
DC-IN
Figure 5 The Four Wires of the Telephone Cable
Inner wire pair
Outer wire pair
Disconnect the punch-down Krone connector for the inner wire pair from
2
the PBX punch-down block.
The outer wire pair remains connected to the PBX punch-down block
since it will not carry data.
Connect the Krone connector of the inner wire pair to the new VCN AP
3
punch-down block, which has been added.
Connect another punch-down Krone connector from the VCN AP
4
punch-down block to the back of the patch panel.
Connect an additional punch-down Krone connector from the patch
5
panel to the PBX punch-down block to carry voice transmissions of the
inner wire pair to the PBX.
Repeat step 1 through step 5 for up to 24 telephone lines.
6
Figure 6 shows the resulting infrastructure.
Preparing the Site for the VCN Access Concentrator 13
Figure 6
VCN AP punch-down
VCN Access Point Punch-Down Block Installation with a Patch Panel
Extension 2
VCN Access Point
(VCNAP)
Ext. 1, Ext. 2
PBX
PBX punch-down
block
Note: If there is only one
extension in the room, the
wires for the second
extension are not used
and not connected to the
PBX punch down block.
Room
Basement
Wire pair
connected
to VCN AP
Ext. 1
+ Data
block
Patch Panel
Extension 1
4-wire cable
Wire pair not
connected
to VCN AP
Punch-Down Blocks
24 wire pairs
Ext. 2
24 wire pairs
Ext. 1
TO PBXFROM VCNAP
Installing the VCN
Access Point
Punch-Down Block
Without a Patch
Panel
The installed patch panel must have 48 wire connectors - 2 for each port.
To install the VCN AP punch-down block in the absence of a patch panel,
perform the following steps:
1
Select the wire pairs according to their position in the RJ-11 telephone
connector in the rear of the VCN AP. The two outside wires comprise the
14 Visitor and Community Network Access Concentrator Installation Guide
outer wire pair and the two inside wires comprise the inner wire pair, as
shown in Figure 7 and Figure 8.
Where there is only one telephone line in a room, the two wires are
connected to the inner wire pair of the phone connector shown in
Figure 7 and Figure 8. The outer wire pair of the phone connector is not
used.
■ The inner wire pair carries both voice and digital data.
■ The outer wire pair only carries voice.
Disconnect the punch-down Krone connector for the inner wire pair from
2
the PBX punch-down block.
The outer wire pair remains connected to the PBX punch-down block
since it will not carry data.
Figure 7 VCN Access Point Rear Panel
PHONE
LINE
DC-IN
Figure 8 The Four Wires of the Telephone Cable
Inner wire pair
Outer wire Pair
Connect the punch-down Krone connector of the inner wire pair to the
3
added VCN AP punch-down block. Refer to Figure 9.
Preparing the Site for the VCN Access Concentrator 15
bloc
Wire pair
connected
to VC NAP
Wire pair not
connected
to VC NAP
Ex t. 1
+ Da ta
VCN AP pun ch-down
k
Figure 9
Extension 1
Punch-Down Blocks
VCN Access Point Punch-down Block Installation without a Patch Panel
Extension 2
VCNAP
Ex t. 2
Note: If there is only one
extension in the room, the
wires for the second
extension are not used
and not connected to the
PBX punch down block.
PBX
PBX punch-down
block
4
Repeat step 1 through step 3 for up to 24 telephone lines.
Room
Basem ent
The VCN AP and PBX punch-down blocks must each have an RJ-21
connector.
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