Server Alarms - Avaya Support

UDS1-BD (UDS1 Interface Circuit Pack)
Note:
Note: Set the Echo Cancellation Plan on the EC Configuration field of the DS1
Circuit Pack screen. Note that Plan 1 uses a 96-ms echo tail and introduces 6dB
of loss for additional cancellation.
In addition, other fields define such parameters as framing modes, line coding, companding
mode and so on. For further details refer to Installing and Operating a 120A Channel Service
Unit with Avaya Communication Manager (03-601508).
Two option jumpers located on the side of the TN464C/D circuit pack must be installed correctly.
The figures on the following page show how to configure the circuit pack for 24- or 32-channel
DS1, and for 75*W (coaxial) or 120*W trunk connections. The channel selection must match the
parameters administered on the corresponding DS1 Circuit Pack screen. (US applications use
24 Channels.)
Figure 128: TN464C/D DS1 Option Jumpers
TN464C/D
Backplane Connectors
24/32 Channel Selector
Figure 129: TN464C/D DS1 Option Jumpers (cont’d)
24 CHNL
32 CHNL
120 OHM
75 OHM
Top
Bottom
75/120 Ohm Selector
Faceplate
Insert the jumpers into the blocks
so as to join the center row of
pins and the row designating the
desired options.
Communication Manager Release 5.0 Issue 4 January 2008 1385