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

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Step Command Remarks
6. Configure the value of the
payload type used by NTE.
rtp payload-type nte value
Optional.
The default is 101.
Enabling VAD
The voice activity detection (VAD) discriminates between silence and speech on a voice connection
according to their 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%.
To enable VAD:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter voice view.
voice-setup N/A
3. Enter voice dial program view.
dial-program N/A
4. Create a POTS voice entity
and enter POTS voice entity
view.
entity entity-number pots N/A
5. Enable VAD.
vad-on [ g711 | g723r53 |
g723r63 | g729a | g729r8 ]
Disabled by default.
The G.726 codec does not support
VAD.
Configuring options related to dial plan
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter voice view.
voice-setup N/A
3. Enter voice dial program
view.
dial-program N/A
4. Create a POTS voice entity
and enter POTS voice entity
view.
entity entity-number pots N/A
5. Configure the calling number
permitted to originate calls to
the local voice entity.
caller-permit calling-string
Optional.
By default, no calling number is configured,
that is, incoming calls are not restricted.
6. Configure the priority of the
POTS voice entity.
priority priority-order
Optional.
By default, the priority level is 0.
The smaller the number, the higher the
priority.
7. Configure a dial prefix.
dial-prefix string
Optional.
By default, no dial prefix is configured.