Grandstream GXV3240 Administration Guide - Manual (Page 54)

Firmware Version 1.0.3.37 GXV3240 Administration Guide Page 52 of 117
OPTIONS message for 3 times, and SIP server does not respond this
message, the phone will send RE-REGISTER message to register
again. The valid range is 3-10.
Enable Session Timer
It is to set if the phone system will use the session timer. If it is set to
“Yes”, it will be added in the SIP INVITE message to notify the server.
Session Expiration (s)
It is used to configure the phone system’s SIP session timer. It enables
SIP sessions to be periodically "refreshed" via a SIP request
(UPDATE, or re-INVITE). If there is no refresh via an UPDATE or re-
INVITE message, the session will be terminated once the session
interval expires. Session Expiration is the time (in seconds) where the
session is considered timed out, provided no successful session
refresh transaction occurs beforehand. The default setting is 180. The
valid range is from 90 to 64800.
Min-SE (s)
It is used to configure the minimum session expiration timer (in
seconds) if the phone is act as a timer refresher. The default setting is
90. The valid range is from 90 to 64800.
UAC Specify Refresher
It is use to set which party will refresh the active session if the phone
makes outbound calls. If it is set to “UAC” and the remote party does
not support Refresher feature, the phone system will refresh the active
session. If it is set to “UAS”, the remote party will refresh it. If it is set
to “Omit”, the header will be omitted so that it can be selected by the
negotiation mechanism. The default setting is "Omit".
UAS Specify Refresher
It is use to set which party will refresh the active session if the phone
receives inbound calls. If it is set to “UAC”, the remote party will refresh
the active session. If it is set t o “UAS” and the remote party does not
support refresh feature, the phone system will refresh it. The default
setting is "UAC".
Force INVITE
It is used to set the SIP message type for refresh the session. If it is
set to “Yes”, the Session Timer will be refreshed by using the SIP
INVITE message. Otherwise, the phone system will use the SIP
UPDATE or SIP OPTION message. The default setting is "No".
Caller Request Timer
This is used to set the caller party to act as refresher by force. If set to
"Yes" and the both party support session timers, the phone will enable
the session timer feature when it makes outbound calls. The SIP
INVITE will include the content “refresher=uac”. The default setting is
"No".
Callee Request Timer
This is used to set the callee party to act as refresher by force. If set to
"Yes" and the both parties support session timers, the phone will
enable the session timer feature when it receives inbound calls. The