3com MSR 20-20 참조 매뉴얼

다운로드
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C
HAPTER
 173: V
O
IP C
ONFIGURATION
 C
OMMANDS
Description
Use the default entity compression command to globally configure a default 
codec.
Use the undo default entity compression command to remove the 
configuration.
By default, the codec with the first priority is g729r8, that with the second priority 
is g711alaw, that with the third priority is g711ulaw, and that with the fourth 
priority is g723r53.
The default entity compression command can be used to globally configure the 
default mode of the voice coding and decoding. After the configuration, all the 
voice entities and newly created voice entities on this router, which have not been 
configured with this function, will inherit this configuration.
Related command:
Example
# Adopt the g723r53 coding and decoding mode as the first selection globally.
<Sysname> system-view
[Sysname] voice-setup
[Sysname-voice] dial-program
[Sysname-voice-dial] default entity compression 1st-level g723r53 
default entity payload-size
Syntax
default entity payload-size { g711 | g723 | g726r16 | g726r24 | g726r32 | g726r40 | 
g729 time-length
undo default entity payload-size { g711 | g723 | g726r16 | g726r24 | g726r32 | 
g726r40 | g729 }
View
Voice dial program view
Parameter
g711: Specifies the packetization period for g711 codec. It can be 10, 20 (the 
default), or 30 milliseconds.
g723: Specifies the packetization period for g723 codec. It is an integral multiple 
of 30 in the range 30 to 180 milliseconds. It defaults to 30 milliseconds.
g726r16: Specifies the packetization period for g726r16 codec. It ranges from 10 
to 110 milliseconds and defaults to 30 milliseconds.
g726r24: Specifies the packetization period for g726r24 codec. It ranges from 10 
to 70 milliseconds and defaults to 30 milliseconds.
g726r32: Specifies the packetization period for g726r32 codec. It ranges from 10 
to 50 milliseconds and defaults to 30 milliseconds.
g726r40: Specifies the packetization period for g726r40 codec. It ranges from 10 
to 40 milliseconds and defaults to 30 milliseconds.