Polycom AVAYA DEFINITY LINKPLUS 1725-361300-001 Interface Manual page 14

LinkPlus Interface Guide: Avaya DEFINITY Communications System
DEFINITY Four-Wire Interface
14
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
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