3com DSA-3CV1100-02 User Manual
Preparing the Site for the VCN Access Concentrator
23
Installing the VCN
Access Point
Punch-down Block
with a Patch Panel
with a Patch Panel
To install the VCN AP punch-down block when there is a patch panel,
perform the following steps:
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
outer wire pair and the two inside wires comprise the inner wire pair, as
shown in
outer wire pair and the two inside wires comprise the inner wire pair, as
shown in
.
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
connected to the inner wire pair of the phone connector shown in
and
. The outer wire pair of the phone connector is not
used.
■
The inner wire pair carries both voice and digital date.
■
The outer wire pair carries only voice.
Figure 7 VCN Access Point Rear Pane
Figure 8 The Four Wires of the Telephone Cable
2 Disconnect the punch-down Krone connector for the inner wire pair from
the PBX punch-down block.
The outer wire pair remains connected to the PBX punch-down block
since it will not carry data.
since it will not carry data.
P H O N E
L IN E
D C -IN
Inner wire pair
Outer wire pair