H3C Technologies H3C MSR 50 - Manual (Page 626)

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Item Description
Called Number
Sending Mode
Send a Truncated
Called Number
Send a truncated called number.
Send All Digits of
a Called Number Send all digits of a called number.
Send Certain
Number of Digits
Send a certain number of digits (that are extracted from the end of a
number) of a called number. The specified value should be not
greater than the total number of digits of the called number.
DTMF
Transmission
Mode
In-band
Transmission
Specify the in-band SIP DTMF transmission mode.
Out-of-band
Transmission
Specify the out-of-band SIP DTMF transmission mode.
RFC2833
Adopt DTMF named telephone event (NTE) transmission mode.
When you adopt this transmission mode, you can configure the
payload type field in RTP packets.
DSCP Field Value
Pre-defined
Set the DSCP value in the ToS field in the IP packets that carry the
RTP stream.
Customized Input the customized DSCP value in the Customized field.
VAD
The voice activity detection (VAD) discriminates between silence
and speech on a voice connection according to signal energies.
VAD reduces the bandwidth requirements of a voice connection by
not generating traffic during periods of silence in an active voice
connection. Speech signals are generated and transmitted only
when an active voice segment is detected. Researches show that
VAD can save the transmission bandwidth by 50%.
• Enable.
• Disable.
By default, VAD is disabled.
Configuring advanced settings of a call route
Configuring coding parameters of a call route
Select Voice Management > Call Route from the navigation tree, and then click the icon of the call
route to be configured to access the advanced settings configuration page.