Screen Reference
DS1 Circuit Pack
794
Administrator’s Guide for Avaya Communication Manager
November 2003
EC Configuration
Appears when Echo Cancellation is y on the DS1 Circuit Pack screen.
EC Direction
Direction of echo cancellation. Appears when Echo Cancellation is y on the DS1 Circuit Pack screen.
Echo Cancellation
Appears when
DS1 Echo Cancellation
is y on the System-Parameters Customer-Options screen and
circuit packs support echo cancellation.
Valid entries
Usage
1-15
Four default echo cancellation configurations are available:
Enter 1, 5-15: provides the most rapid adaptation in detecting and
correcting echo at the beginning of a call.
NOTE:
Plan 1 introduces 6 db of loss for additional
cancellation.
Enter 2: slightly slower adaptation to echo, use if speech is clipped
when both parties talk at the same time.
Enter 3: slightly slower adaptation to echo, may result in a 2 or 3
second fade on strong echo
Enter 4: in cases of extreme echo, excessive clipping or breakup of
speech. May result in slight echo or background noise.
Valid entries
Usage
inward/outward
Indicate the direction of the echo that is being cancelled.
Valid entries
Usage
y/n
Enter y to allow echo cancellation.