3Com DSA-3CV1100-02 service manual VCN Access Point Rear Panel

26CHAPTER 2: INSTALLING THE VCN ACCESS CONCENTRATOR

outer wire pair and the two inside wires comprise the inner wire pair, as shown in Figure 10 and Figure 11.

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 10 and Figure 11. 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 only carries voice.

2Disconnect 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.

Figure 10 VCN Access Point Rear Panel

P H O N E L IN E D C -IN

Figure 11 The Four Wires of the Telephone Cable

Inner wire pair

Outer wire Pair

3Connect the punch-down Krone connector of the inner wire pair to the added VCN AP punch-down block. Refer to Figure 12.