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252 Installation, Upgrades and Additions for Avaya CMC1 Media Gateways
7. If the echo still exists, set the EC Configuration: field to 1, 2, or 3, then test the voice
quality. These settings provide help for the following scenarios:
● Setting 1 rapidly minimizes echo when first detected, regardless of the loudness of the
talker’s voice. Settings 1 and 4 have the same EC settings except that Setting 1
introduces 6 dB of loss.
● Setting 2 minimizes speech clipping, but it takes a fraction of a second longer for the
echo to fade.
● Setting 3 eliminates speech clipping, but a strong echo may take 2 or 3 seconds to fade.
8. If after trying all these settings, the echo still exists, contact technical support. Refer to
Where to get additional help
on page 22.
Add CO, FX, WATS, and PCOL
Requirements
Each Central Office (CO), Foreign Exchange (FX), Personal Central Office Line (PCOL), or
Wide Area Telecommunications Service (WATS) trunk connects to 1 port of either an 8-port
TN747B or to 1 of several CO trunk circuit packs.
Installation
To add CO, FX, WATS, and PCOL trunks:
1. Install a TN747B or a CO Trunk circuit pack in the assigned carrier slot (if an additional
circuit pack is required).
2. Administer the forms listed under CO, FX, WATS, or PCOL Trunk Group in Administrator’s
Guide for Avaya Communication Manager.
3. Determine the port assignment of the trunk from the Trunk Group form.
EXAMPLE: 3 A 07 01
Cabinet (Port
Network)
Carrier Slot
Number
Port
Number