Ubigate iBG2016 Configuration Guide/Ed.00
© SAMSUNG Electronics Co., Ltd.
513
The presence of echo occurs whenever the replicated signal delay exceeds 10
msecs, and becomes apparent to the speaker as reflected voice when the delay
exceeds as little as 16 msec. It is manifested to the far end as an altered replica
of the speaker original. If the echo interval exceeds approximately 25
milliseconds, it is distracting. In order to combat the echo phenomenon, an
echo cancellor is employed.
Figure 6.6 Echo problem
Step
Command
Purpose
1
configure terminal
Enter the global configuration mode.
2
voice-port
slot/sub-
slot/port:ds0-group-no
Enter the module configuration mode.
3
echo-cancel enable
Enables the echo cancellation on this voice port.
Echo cancellation works on the echo
cancellation coverage which is configured by
user or as default.
4
echo-cancel coverage
{ 8 | 16 | … | 128 }
Choose the echo tail length(echo cancel
coverage) to which echo cancellor is committed.
5
non-linear
Enables nonlinear processing(residual echo
suppression) in the echo canceler.
6
exit
Exit the voice-port configuration mode.
7
show voice port
slot/sub-slot/port:ds0-
group-no
checks out if the values set up in the voice
port are set up normally.
San Francisco
Caller
Philadelphia
PSTN
Clear speech
Send
Receiver
Clear speech
E
C
E
C
Summary of Contents for Ubigate iBG2016
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Page 156: ...CHAPTER 6 BGP 120 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
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