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9.10 PBX Configuration—[1-1] Configuration—Slot—V-SIPGW—Port Property
Value Range
20 ms, 30 ms, 40 ms, 50 ms, 60 ms
Packet Sampling Time (G.729A)
Specifies the time interval between measurements (samples) of sound data during a conversation. The smaller
this number, the higher the quality of the transmitted sound.
Value Range
20 ms, 30 ms, 40 ms, 50 ms, 60 ms
Voice Activity Detection for G.711
Enables the use of the Voice Activity Detection feature for the G.711 codec. This feature conserves bandwidth
by detecting silent periods during a call and suppressing the packets of silence from being sent to the network.
Value Range
Disable, Enable
Inform Annex B Status (G.729A)
Specifies whether to inform that Annex B for the G.729 codec is not supported.
Value Range
Disable, Enable
Note
Annex B expansion features for the G.729 codec are not supported by the V-SIPGW4 card. However, it is
necessary to inform some carriers of this fact to avoid having calls disconnected. Carriers can be informed
by enabling this feature.
FAX Sending Method
Specifies the method of transporting the fax signal.
Value Range
G.711 Inband, T.38
Maximum Bit Rate
Specifies the maximum bit rate of the fax signal.
Value Range
No Speed Limit, 2400 bps, 4800 bps, 7200 bps, 9600 bps, 12000 bps, 14400 bps
FAX Detection Ability
Enables the use of the FAX Detection Ability feature. This feature enables end-to-end fax signal relay when
the other party prefers a codec other than G.711. This feature functions only if the other party supports G.711.
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