Aastra 480i Administrator's Manual page 345

Configuration Parameters
Operational, Basic, and Advanced Parameters
Parameter –
sip T2 timer
T2 Timer
(in Web UI)
Description
Format
Default Value
Range
Example
Parameter –
sip transaction timer
Transaction Timer
(in Web UI)
Description
Format
Default Value
Range
Example
41-001129-00 Rev 09, Release 1.4.1
DFW Phone 972-992-4600
Aastra Web UI Advanced Settings->Global SIP->
Advanced SIP Settings
Configuration Files aastra.cfg, <mac>.cfg
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.
Integer
0
Not Applicable
sip T2 timer: 8
Aastra Web UI Advanced Settings->Global SIP->
Advanced SIP Settings
Configuration Files aastra.cfg, <mac>.cfg
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.
Integer
4000
4000 to 64000
sip transaction timer: 6000
A-55