R2511-HP MSR Router Series Voice Configuration Guide(V5)

22
Step Command Remarks
3. Enable local call identification.
distinguish-localtalk
Optional.
Not enabled by default.
Configuring voice call performance-related
parameters
This section describes the configuration procedure for voice call performance-related parameters.
Configuration prerequisites
You have completed the required configurations for a voice entity.
Configuration procedure
To configure voice performance-related parameters:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter voice view.
voice-setup N/A
3. Set the duration of
monitoring DSP buffered
data.
vqa dsp-monitor buffer-time
time
Optional.
By default, the duration of monitoring DSP
buffered data is 270 milliseconds. If the
duration is set to 0, buffered data will not be
monitored.
Duration greater than 240 milliseconds is
recommended because too small a duration
value will result in poor voice quality in the
case of severe jitter.
4. Set the DSCP subfield in
the ToS field in the IP
packets that carry the
RTP stream or voice
signaling.
vqa dscp { media | signal }
dscp-value
Optional.
The default is 101110.
5. Set the time duration for
switching from the
current VoIP link to
another VoIP link or a
PSTN link (that is, the call
backup switching time) in
case of a VoIP call
failure.
voip timer voip-to-pots time
Optional.
The default is 5 seconds.