Account/Codec Settings - Grandstream Networks WP820 Administration Manual

Expirat timed out, provided no successful session refresh transaction occurs beforehand. The default setting is 180. The
ion(s) valid range is from 90 to 64800.
Min-SE Determines the minimum session expiration timer (in seconds) if the phone act as a timer refresher. The default
(s) setting is 90. The valid range is from 90 to 64800.
UAC
Sets which party will refresh the active session if the phone makes outbound calls. If it is set to "UAC" and the
Specif
remote party does not support Refresher feature, the phone will refresh the active session. If it is set to "UAS", the
y
remote party will refresh it. If it is set to "Omit", the header will be omitted so that it can be selected by the
Refres
negotiation mechanism. The default setting is "Omit".
her
UAS
Specifies which party will refresh the active session if the phone receives inbound calls. If it is set to "UAC", the
Specif
remote party will refresh the active session. If it is set to "UAS" and the remote party does not support refresh
y
feature, the phone will refresh it.
Refres
The default setting is "UAC".
her
Caller
Sets the caller party to act as refresher by force. If set to "Yes" and both party support session timers, the phone
Reque
will enable the session timer feature when it makes outbound calls. The SIP INVITE will include the content
st
"refresher=uac". The default setting is "No".
Timer
Callee
Sets the callee party to act as refresher by force. If set to "Yes" and both parties support session timers, the phone
Reque
will enable the session timer feature when it receives inbound calls. The SIP 200 OK will include the content
st
"refresher=uas". The default setting is "No".
Timer
Configures the session timer feature on the phone by force. If it is set to "Yes", the phone will use the session timer
Force
even if the remote party does not support this feature. If it is set to "No", the phone will enable the session timer
Timer only when the remote party supports this feature. To turn off the session timer, select "No".
The default setting is "No".
Force Sets the SIP message type for refresh the session. If it is set to "Yes", the Session Timer will be refreshed by using
INVITE the SIP INVITE message. Otherwise, the phone will use the SIP UPDATE or SIP OPTIONS message. Default is "No".

Account/Codec Settings

Preferred Vocoder
Codec Negotiation
Priority
Use First Matching
Vocoder in 200OK SDP
iLBC Frame Size
Opus Payload Type
Table 13: Account/SIP Settings
Preferred Vocoder
Lists the available and enabled Audio codecs for this account. Users can enable the specific
audio codecs by moving them to the selected box and set them with a priority order from top to
bottom. This configuration will be included with the same preference order in the SIP SDP
message. The Supported vocoders are: PCMU, PCMA, G722, G729A/B, iLBC and Opus.
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.
Includes only the first matching vocoder in its 200OK response, otherwise it will include all
matching vocoders in same order received in INVITE.
The default setting is No.
Specifies iLBC packet frame size (20ms or 30ms). Default is 30ms.
Determines payload type for Opus codec. The valid range is between 96 and 126.