Configuring Voice Call Performance-Related Parameters; Configuration Prerequisites; Configuration Procedure - HP FlexNetwork MSR Series Configuration Manual

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:
Step
1. Enter system view.
2. Enter voice view.
3. Set the duration of
monitoring DSP
buffered data.
4. Set the DSCP subfield
in the ToS field in the IP
packets that carry the
RTP stream or voice
signaling.
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.
6. Configure the type of
the DSP image.
7. Configure the maximum
number of call history
records that can be
stored.
Command
system-view
voice-setup
vqa dsp-monitor
buffer-time time
vqa dscp { media | signal }
dscp-value
voip timer voip-to-pots time
vi-card dsp-image { ms |
general }
call-history max-count
number
22
Remarks
N/A
N/A
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.
Optional.
The default is 101110.
Optional.
The default is 5 seconds.
The default is the general version.
The general version supports the G.723
codec, but it cannot meet voice quality
requirements of Microsoft. The ms version
can meet voice quality requirements of
Microsoft, but it does not support the G.723
codec.
Optional.
50 by default.