3com DSA-3CV1100-02 Manuel D’Utilisation
Installing the VCN Access Concentrator
33
If your switch is the SuperStack II 1100 or 3300, connect to the front
panel ports. If your switch is not the SuperStack II 1100 or 3300, follow
the procedures for your switch.
panel ports. If your switch is not the SuperStack II 1100 or 3300, follow
the procedures for your switch.
Note on Insertion of
Line Cards in the VCN
Access Concentrator
Note the following:
The card in VCN AC slot 1 provides central management and is different
from the remaining cards. This card has a factory installed MAC address
and must not be inserted in any slot other than slot 1.
from the remaining cards. This card has a factory installed MAC address
and must not be inserted in any slot other than slot 1.
Connecting Cables to
the Rack Without a
Patch Panel
This section describes how to connect the rack without a patch panel.
The VCN AC connects directly to the VCN AP and PBX punch-down
blocks at the back with RJ-21 connectors.
The VCN AC connects directly to the VCN AP and PBX punch-down
blocks at the back with RJ-21 connectors.
Back Panel Connections
Perform the following steps to connect the VCN AC to the punch-down
blocks.
blocks.
1 Connect one RJ-21 flat cable to the VCN AP punch-down block through
the RJ-21 connector labeled “FROM VCN AP”.
2 Connect the other RJ-21 flat cable to the PBX punch-down block through
the RJ-21 connector labeled “TO PBX”.
To connect the back panel of the VCN AC, use the 2 flat cables with RJ-21
connectors supplied with the VCN AC.
connectors supplied with the VCN AC.
The pin assignments of the two RJ-21 connectors at the back of the VCN
AC must match the pin assignments of the RJ-21 connectors of the two
punch-down blocks.
AC must match the pin assignments of the RJ-21 connectors of the two
punch-down blocks.
.
Table 6 Pin Assignment for the RJ-21 Connector
VCN AC Port No.
First Pin
Second Pin
1
1
26
2
2
27
3
3
28
4
4
29