Aastra Telecom SIP 480I - Manual (Page 345)

Operational, Basic, and Advanced Parameters
41-001129-00 Rev 09, Release 1.4.1 A-55
Configuration Parameters
Appendix A
Parameter –
sip T2 timer
T2 Timer
(in Web UI)
Aastra Web UI Advanced Settings->Global SIP->
Advanced SIP Settings
Configuration Files aastra.cfg, .cfg
Description This timer is a SIP transaction layer timer defined in RFC 3261.
Timer 2 represents the amount of time, in milliseconds, a non-INVITE
server transaction takes to respond to a request.
Format Integer
Default Value 0
Range Not Applicable
Example sip T2 timer: 8
Parameter –
sip transaction timer
Transaction Timer
(in Web UI)
Aastra Web UI Advanced Settings->Global SIP->
Advanced SIP Settings
Configuration Files aastra.cfg, .cfg
Description The amount of time, in milliseconds that the phone allows the callserver
(registrar/proxy) to respond to SIP messages that it sends. If the phone
does not receive a response in the amount of time desginated for this
parameter, the phone assumes the message has timed out.
Format Integer
Default Value 4000
Range 4000 to 64000
Example sip transaction timer: 6000