H3C Technologies H3C MSR 5600 - Manual (Page 69)

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Step Command Remarks
5. Configure out-of-band DTMF .
• (Method 1) Configure NTE
mode:
{
Enable NTE mode:
outband nte
{
Configure the value of the
payload type used by NTE:
rtp payload-type nte value
• (Method 2) Configure SIP
mode:
outband sip
Use either method.
By default, inband transmission is
adopted, and the value of the
payload type used by NTE is 101.
When the device is connected to a
device from another vendor, you
cannot set the payload type field to
any value forbidden by that
device. Otherwise, an NTE
negotiation failure might occur.
Enabling VAD for a VoIP entity
The voice activity detection (VAD) discriminates between silence and speech on a voice connection
according to their energies. With VAD, a POTS entity does not generate traffic during periods of silence
in an active voice connection.
To enable VAD:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter voice view. voice-setup N/A
3. Enter dial program view. dial-program N/A
4. Create a VoIP entity and enter
VoIP entity view.
entity entity-number voip N/A
5. Enable VAD.
vad-on [ g723r53 | g723r63 |
g729a | g729r8 ] *
By default, VAD is disabled.
The G.711 and G.726 codecs do
not support VAD. The G.729br8
codec always supports VAD.
Configuring options related to dial program
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter voice view. voice-setup N/A
3. Enter dial program view. dial-program N/A
4. Create a VoIP entity and
enter VoIP entity view.
entity entity-number voip N/A
5. (Optional.) Configure the
permitted calling numbers.
caller-permit calling-string
Optional.
By default, the voice entity permits all calling
numbers.