Appendix a – Aastra Telecom SISIP 57I CT User Manual
Page 401
Operational, Basic, and Advanced Parameters
41-001160-00, Rev 01 Release 2.0
A-59
Configuration Parameters
Appendix A
Parameter –
sip session timer
Session Timer
(in Web UI)
Aastra Web UI
Advanced Settings->Global SIP->
Advanced SIP Settings
Configuration Files aastra.cfg,
Description
The time, in seconds, that the IP phone uses to send periodic
re-INVITE requests to keep a session alive. The proxy uses these
re-INVITE requests to maintain the status' of the connected sessions.
See RFC4028 for details.
Format
Integer
Default Value
0
Range
Not Applicable
Example
sip session timer: 30
Parameter –
sip T1 timer
T1 Timer
(in Web UI)
Aastra Web UI
Advanced Settings->Global SIP->
Advanced SIP Settings
Configuration Files aastra.cfg,
Description
This timer is a SIP transaction layer timer defined in RFC 3261.
Timer 1 is an estimate, in milliseconds, of the round-trip time (RTT).
Format
Integer
Default Value
500
Range
Not Applicable
Example
sip T1 timer: 600