76
by SIP:RFC2833 (SIP protocol) or H.323:H.245 (H.323 protocol)
by SIP INFO (SIP protocol) or Q.931 (H.323 protocol)
z
RFC2833: Payload number for DTMF[96~127]:
Define the DTMF token on RFC2833, input range form 96 to 127.
z
Silence Detection / Suppression:
Enable or disable the Silence Detection/VAD function. When Enable, if local gateway
detect a silence situation ( no talk), it will send a VAD package rather than a full voice
package for remote side to active CNG ( Comfort Noise Generation) to save the
bandwidth. The default is Enable to save the bandwidth.
z
Prefer CODEC :
In this table, you can define the prefer CODEC. The priority 1 selection is highest
priority. By different CODEC, user can select different payload size per package as
below:
G.711
uLaw:
20,30,40,50,60,70,80ms
G.711
aLaw:
20, 30,40,50,60,70,80ms
G.723.1:
30,60,90ms
G.729a:
20,30,40,50,60,70,80ms
G.726: 20,30,40,50,60,70,80ms
None: none
The gateway will calculate and show approximately bandwidth for one VoIP call.
