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  • session_timer_refresh_method_force_invite

Web User Interface


Phone User Interface


Initial Firmware Version

XML Configuration

<session_timer_refresh_method_force_invite, idx="INDEX" perm="PERMISSIONFLAG">VALIDVALUE</session_timer_refresh_method_force_invite>


Specifies the sip session refresh method used during calls.
As the caller, when the timer session timer expires, the phone will send either an INVITE or an UPDATE message to keep the session alive.

  • "off" will check for an "UPDATE" in the SIP 200 OK message's Allow header in the reply from the callee. If UPDATE is present, the caller will issue an UPDATE when the session timer expires, otherwise it will issue an INVITE.
  • "on" will ignore the Allow list and always send an INVITE message when the session timer expires.

Valid Values

on/off, true/false

Default Value


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