Command with FXS Gateway
Figure 19-27 voice commend list
Parameter Usages:
print current voice information and configurations.
-send
to define packet size for each codec. 20/40/60ms means to send a voice packet
per 20/40/60 milliseconds. The smaller the packet size, the shorter the delay time.
If network is in good condition, smaller sending packet size is recommended. In
this parameter, 20/40/60ms is applicable to G.711u/a law, and G.729 codec, while
30/60ms is applicable to G.723.1 codec.
-priority codec priority while negotiating with other SIP device. This parameter
determines the listed sequence in the media header of SDP body of SIP INVITE
message. The codec listed in left side has the highest priority when both parties
determining final codec. User can also select the particular codec without others.
usr/config$ usr/config$ voice –priority g723 (only select this codec)
usr/config$ voice –priority g723 g729 g711u g711a (select four codecs, and g723 is the first
choice)
-volume There are three adjustable value. voice volume stands for volume, which can be
heard from FXS Gateway side; input gain stands for volume, which the opposite
party hears. dtmf volume stands for DTMF volume/level, which sends to its own
Line1 or Line2.
Note: level of volume is too high or too low may be result in bad performance while connecting
to each other.
-nscng
silence suppression and comfort noise generation setting (1 = ON; 0 = OFF). It is
applicable to G.723 codec only. An example is demonstrated below:
usr/config$ voice -nscng g723 1
-mindelay the minimum jitter buffer size. (Default value= 90 ms)
-maxdelay the minimum jitter buffer size. (Default value= 150 ms)
usr/config$ voice –mindelay 90 –maxdelay 150 -optfacor 7
-echo
activate each canceler (1 = ON; 0 = OFF).
-optfactor optimized factor. (Default value= 7). An example is demonstrated below:
usr/config$ voice –mindelay 90 –maxdelay 150 -optfacor 7
Note:
be sure to know well the application before you change voice parameters because
this might cause incompatibility.
usr/config$ voice -print
Voice codec setting relate information
Command List
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