Grandstream Networks GHP6 Series Administration Manual page 13

SIP T2 Timeout
Outbound Proxy Mode
Enable 100rel
Use Route Set in Notify
(Follow RFC 6665)
Enable Session Timer
Session Expiration
Min-SE
Caller Request Timer
Callee Request Timer
Force Timer
UAC Specify Refresher
UAS Specify Refresher
SIP T2 Timeout is the maximum retransmit time of any SIP request messages (excluding
the INVITE message). The re-transmitting and doubling of T1 continues until it reaches the
T2 value. Default is 4 seconds.
Configures whether to put the Outbound Proxy in the Route header, or if SIP messages
should always be sent to Outbound Proxy.
1. In route
2. Not in route
3. Always send to
Default is "in route".
When enabled, the 100rel tag is appended to the value of the Supported header of the initial
signaling messages.
The default setting is "No".
Configures whether to use route set in NOTIFY (follow RFC 6665).
● If enabled, the Request URI of the refresh subscription will use the URI in the received
NOTIFY Contact (RFC 6665).
● If disabled, the URI in the previously subscribed 200 OK Contact will be used.
Session Timer
Configures whether to enable session timer function. 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. If set to "Yes", the phone will use the related parameters when sending session
timer according to "Session Expiration". If set to "No", session timer will be disabled.
The default setting is "No".
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.
The minimum session expiration (in seconds). The default value is 90 seconds. The valid
range is from 90 to 64800.
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".