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Parameter
G.723.1 Jitter Buffer Adjustment Interval (s) 1-
5s
CODEC Frame Settings
The parameters below are used to set the interval between packet transmissions for each type of
CODEC. It is recommended that all VoIP Gateway Cards in a VoIP network have the same settings for
these parameters.
For details, refer to "Detailed Explanations".
Parameter
G.723.1 Packet Sending Interval (ms)
G.729A Packet Sending Interval (ms)
G.711 Packet Sending Interval (ms)
Others
Parameter & Description
Echo Canceller
Specifies the use of the echo cancellation feature
(G.168).
Echo is the audible duplication of a caller's voice on the
return path; when echo exists, the caller hears his or
her own voice after some delay. The echo canceller
eliminates this echo.
G.723.1 VAD (Voice Activity Detection)
Specifies the use of the VAD feature (G.723.1).
The VAD conserves bandwidth by detecting silent
periods during a call and suppressing the packets of
silence from being sent to the network.
Note
To use this feature, both the local and remote
cards must have this parameter set to "Use".
G.723.1 Rate
Specifies the rate of the G.723.1 CODEC.
DTMF Detection
Specifies the use of the DTMF detection feature.
DTMF detection enables end-to-end DTMF relay over
the network.
For details, refer to "Detailed Explanations".
Default
Value Range
5
1 to 5
Default
Value Range
30 × n (n = 1–3)
30
10 × n (n = 2–4)
20
10 × n (n = 2–4)
20
Default
Value Range
Use
Use,
Don't use
Use
Use,
Don't use
6.3Kbps
5.3Kbps,
6.3Kbps
Use
Use,
Don't use
2.2 Programming
Programming Guide
19
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