Polycom SPECTRALINK 6000, SPECTRALINK 8000 manual DEFINITY Four-Wire Interface, Pair, Function

LinkPlus Interface Guide: Avaya DEFINITY Communications System

DEFINITY Four-Wire Interface

The DEFINITY TN754B (any vintage) or TN754 (vintage 11 or higher) circuit pack provides eight, four-wire digital station circuits. Two of these wires are used for transmit, two are used for receive. Typically the stations are wired to a block or to a patch panel. From the block or patch panel the stations are wired to a modular jack. The jack can connect to a short patch cord that connects to the MCU. The following table shows the Avaya side of the block or patch panel wiring.

Pair	Function
1
2	Receive Station 1
3	Transmit Station 1
4
5	Receive Station 2
6	Transmit Station 2
7
8	Receive Station 3
9	Transmit Station 3
10
11	Receive Station 4
12	Transmit Station 4
13
14	Receive Station 5
15	Transmit Station 5
16
17	Receive Station 6
18	Transmit Station 6
19
20	Receive Station 7
21	Transmit Station 7
22
23	Receive Station 8
24	Transmit Station 8
25

14 PN: 1725-36130-001_E.doc