Grandstream Networks, Inc. | ||
DTMF Payload | This parameter sets the payload type for DTMF using RFC2833 | |
Type |
|
|
Preferred | The HandyTone ATA supports up to 7 different Vocoder types including | |
Vocoder | G.711 | |
| on the product model, some of these Vocoders may not be provided in | |
| standard release. |
|
| Users can configure Vocoders in a preference list that will be included | |
| with the same preference order in SDP message. The first Vocoder in | |
| this list can be entered by choosing the appropriate option in “Choice 1”. | |
| Similarly, the last Vocoder in this list can be entered by choosing the | |
| appropriate option in “Choice 7”. |
|
Voice Frames per | This field contains the number of voice frames to be transmitted in a | |
TX | single packet. When setting this value, the user should be aware of the | |
| requested packet time (used in SDP message) as a result of configuring | |
| this parameter. This parameter is associated with the first vocoder in the | |
| above vocoder Preference List or the actual used payload type | |
| negotiated between the 2 conversation parties at run time. | |
| e.g., if the first vocoder is configured as G723 and the “Voice Frames | |
| per TX” is set to be 2, then the “ptime” value in the SDP message of an | |
| INVITE request will be 60ms because each G723 voice frame contains | |
| 30ms of audio. Similarly, if this field is set to be 2 and if the first vocoder | |
| chosen is G729 or G711 or G726, then the “ptime” value in the SDP | |
| message of an INVITE request will be 20ms. |
|
| If the configured voice frames per TX exceeds the maximum allowed | |
| value, the HandyTone ATA will use and save the maximum allowed | |
| value for the corresponding first vocoder choice. The maximum value for | |
| PCM is 10(x10ms) frames; for G726, it is 20 (x10ms) frames; for G723, | |
| it is 32 (x30ms) frames; for G729/G728, 64 (x10ms) and 64 (x2.5ms) | |
| frames respectively. |
|
G723 Rate: | This defines the encoding rate for G723 vocoder. By default, 6.3kbps | |
| rate is chosen. |
|
iLBC frame size: | This sets the iLBC size in 20ms or 30ms |
|
iLBC payload | This defines payload time for iLBC. Default value is 98. The valid range | |
type: | is between 96 and 127. |
|
Silence | This controls the silence suppression/VAD feature of G723 and G729. If | |
Suppression | set to “Yes”, when a silence is detected, small quantity of VAD packets | |
| (instead of audio packets) will be sent during the period of no talking. If | |
| set to “No”, this feature is disabled. |
|
SIP Registration | This parameter controls whether the HandyTone ATA needs to send | |
| REGISTER messages to the proxy server. The default setting is “Yes”. | |
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