Avaya G700 Troubleshooting Manual page 14

Voice Quality
Symptom Root Cause
Echoes during an IP Echo
call - particularly Cancellation
between G700 and was not turned
calls to the Public on.
Switch Telephone
Network (PSTN).
1. Check to see if echo cancellation is turned on in the SAT connected to the S8300:
Example: display ds1 1v4
2. If Echo Cancellation is not turned "ON", issue a change ds1 [port] command:
Example: change ds1 1v4
3. Change fields to the following settings:
Echo Cancellation: [y]
EC Direction: [inward/outward - for the GA release it is actually opposite of what it's suppose to be on the MM710
(for firmware version 2 and earlier)]
EC Configuration: [1]
4. Issue a change trunk-group [trunk group #] command associated with the ds1:
Example: change trunk-group 18
5. On page 2 set Ds1 Echo Cancellation? to 'y'.
6. If Echo Cancellation is not displayed, escalate the problem and contact Avaya or your Authorized Avaya Business
Partner to turn ON Echo Cancellation (must purchase).
Level 2:
If Echo Cancellation is not turned "ON" for a DS1, and the customer reports that the SAT screen doesn't display an option
to turn Echo Cancellation 'ON', login to the SAT to check the system-parameters customer-options form:
1. Issue a display system-parameters customer-options command.
2. On page 1, check that "Maximum Number of DS1 Boards with Echo Cancellation [1]" is set to greater than "0", or to the
number of DS1 boards under control of the S8300.
3. On page 2, check that the echo cancellation feature is set to 'enabled' or 'y'.
4. Issue a change ds1 [port] command:
Example: change ds1 1v4
5. Change fields to the following settings:
Echo Cancellation: [y]
EC Direction: [inward/outward - for the GA release it is actually opposite of what it's supposed to be on
the MM710 (for firmware version 2 and earlier)]
EC Configuration: [1]
6. Issue a change trunk-group [trunk group #] command associated with the ds1:
Example: change trunk-group 18
7. On page 2 set Ds1 Echo Cancellation? to 'y'.
G700 Troubleshooting
Resolution
Page 3
7/5/2002 4:35 PM