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By default, the inband DTMF transmission mode is adopted.

Example # Configure the out-of-band DTMF transmission mode for VoFR entity 10.

<Sysname> system-view [Sysname] voice-setup [Sysname-voice] dial-program [Sysname-voice-dial] entity 10 vofr [Sysname-voice-dial-entity10] outband vofr

seq-number

Syntax

seq-number

 

undo seq-number

View

VoFR entity view

Parameter

None

Description

Use the seq-numbercommand to configure the VoFR packets sent by the local

 

voice gateway to carry a sequence number.

 

Use the undo seq-numbercommand to restore the default.

 

By default, the VoFR packets sent by the local voice gateway do not carry any

 

sequence number.

n

Usually, the configuration of the originating voice gateway determines whether

VoFR packets carry a sequence number.

 

Routers of some manufacturers do not comply with the above rule, but force

 

VoFR packets to carry a sequence number when a specific codec is adopted. If

 

a call failure or severe voice distortion occurs when the device is interconnected

 

with a router of a third party, you can try making VoFR packets carry a

 

sequence number.

 

The terminating voice gateway can determine whether any voice packet loss,

 

duplicate voice packet, or out-of-sequence occurs according to sequence

 

numbers, which helps compensate voice. However, the use of sequence

 

numbers will increase the required network bandwidth. Therefore, you can

 

determine whether to use sequence numbers according to the actual

 

condition.

Example

# Configure voice packets sent by VoFR entity 10 to carry a sequence number.

 

<Sysname> system-view

 

[Sysname] voice-setup

 

[Sysname-voice] dial-program

 

[Sysname-voice-dial] entity 10 vofr

 

[Sysname-voice-dial-entity10] seq-number

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3Com MSR 50, MSR 30 manual Seq-number, Undo seq-number