R0106-HP MSR Router Series Voice Command Reference(V7)

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modem passthrough
Use modem passthrough to configure a codec and a switching mode for modem pass-through.
Use undo modem passthrough to restore the default.
Syntax
modem passthrough { nse [ payload-type number ] | protocol } codec { g711alaw | g711ulaw }
undo modem passthrough
Default
Modem pass-through is not used.
Views
POTS entity view, VoIP entity view
Predefined user roles
network-admin
Parameters
nse: Uses the named signaling event (NSE) mode to switch to modem pass-through.
payload-type number: Specifies the value for the NSE payload type, in the range of 98 to 120. The
default is 100.
protocol: Uses SIP to switch to modem pass-through.
codec: Specifies a codec used for modem pass-through.
g711alaw: Specifies the G711alaw codec.
g711ulaw: Specifies the g711ulaw codec.
Usage guidelines
Configure the same codec and switching mode on the calling and called devices.
Configure the same payload type value for NSE on the calling and called devices.
The NSE mode disables VAD and echo cancellation.
Examples
# Use SIP to switch to modem pass-through and specify the G711alaw codec for modem pass-through.
<Sysname> system-view
[Sysname] voice-setup
[Sysname-voice] dial-program
[Sysname-voice-dial] entity 550 voip
[Sysname-voice-dial-entity550] modem passthrough protocol codec g711alaw
# Use the NSE to switch to modem pass-through and specify the G711alaw codec for modem
pass-through.
<Sysname> system-view
[Sysname] voice-setup
[Sysname-voice] dial-program
[Sysname-voice-dial] entity 550 voip
[Sysname-voice-dial-entity550] modem passthrough nse codec g711alaw