Grandstream Networks GRP260X Series Administration Manual page 20

Caller Request Timer
Callee Request Timer
Force Timer
UAC Specify Refresher
UAS Specify Refresher
Force INVITE
Account x �� Codec Settings
Audio
Preferred Vocoder
(Choice 1 – 8)
Codec Negotiation Priority
Use First Matching Vocoder in 200OK
SDP
iLBC Frame Size
iLBC Payload Type
G.726-32 Packing Mode
G.726-32 Dynamic Payload Type
Opus Payload Type
Send DTMF
If set to "Yes" and the remote party supports session timers, the phone will use a session timer
when it makes outbound calls.
The default setting is "No".
If set to "Yes" and the remote party supports session timers, the phone will use a session timer
when it receives inbound calls.
The default setting is "No".
If set to "Yes", the phone will use the Session Timer even if the remote party does not support
this feature. Otherwise, Session Timer is enabled only when the remote party supports it.
The default setting is "No".
As a caller, select UAC to use the phone as the refresher, or select UAS to use the callee or
proxy server as the refresher. When set to "Omit", the refresh object is not specified.
The default setting is "UAC".
As a callee, select UAC to use caller or proxy server as the refresher, or select UAS to use the
phone as the refresher.
The default setting is "UAC".
Select "Yes" to force using the INVITE method to refresh the session timer.
The default setting is "No".
Multiple vocoder types are supported on the phone, the vocoders in the list is a higher
preference. Users can configure vocoders in a preference list that is included with the same
preference order in SDP message.
Configures the phone to use which codec sequence to negotiate as the callee. When set to
"Caller", the phone negotiates by SDP codec sequence from received SIP Invite. When set to
"Callee", the phone negotiates by audio codec sequence on the phone. The default setting is
"Callee".
When set to "Yes", the device will use the first matching vocoder in the received 200OK SDP
as the codec. The default setting is "No".
Selects iLBC packet frame size. Users can choose from 20ms and 30ms. The default setting is
"30ms".
Specifies iLBC payload type. Valid range is 96 to 127. Cannot be the same as Opus or DTMF
payload type. Valid range is 96 to 127. The default setting is "97".
Selects "ITU" or "IETF" for G726-32 packing mode.
The default setting is "ITU".
Specifies G.726-32 payload type. Valid range is 96 to 127. Default is 127.
Specifies Opus payload type. Valid range is 96 to 127. It cannot be the same as iLBC or
DTMF Payload Type. Default value is 123.
Specifies the mechanism to transmit DTMF digits. There are 3 supported modes:
1. In audio: DTMF is combined in the audio signal (not very reliable with low-bit-rate
codecs).