Huawei AR1200 Series Configuration Manual - Voice page 46

Huawei AR1200 Series Enterprise Routers
Configuration Guide - Voice
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Setting Jitter Buffer Parameters
This section describes how to set jitter buffer parameters to improve the voice quality.
Context
Delay variations in voice packet arrival time can occur because of network congestion or route
changes. To reduce sound distortion caused by the delay jitter and packet loss, a jitter buffer is
used. You can set proper jitter buffer parameters to minimize delay variations so that packets
can be processed in a timely manner and smooth voice communication can be provided as much
as possible.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
voice
The voice view is displayed.
Step 3 Run:
dsp
The DSP view is displayed.
Step 4 Set parameters for the DSP channel.
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Issue 03 (2011-09-30)
fax v8negotiate enable
V8 negotiation is enabled.
Run:
jitter-buffer adapt-jb-threshold adapt-jb-threshold
The alarm threshold of the dynamic jitter buffer is set.
Run:
jitter-buffer init-adapt-jb init-adapt-jb-value
The initial value of the dynamic jitter buffer is set.
Run:
jitter-buffer normal-fixed-jb normal-fixed-jb-value
The initial value of the static jitter buffer is set.
Run:
jitter-buffer max-adapt-jb max-adapt-jb-value
The maximum value of the dynamic jitter buffer is set.
Run:
jitter-buffer min-adapt-jb min-adapt-jb-value
The minimum value of the dynamic jitter buffer is set.
Run:
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