Aastra Telecom SIP 57I - Manual (Page 570)

Operational, Basic, and Advanced Parameters
A-68 41-001160-00, Release 2.1, Rev 04
IP Phone Administrator Guide
Appendix A
Parameter –
sip registration renewal timer
Registration Renewal Timer
(in Web UI)
Aastra Web UI Advanced Settings->Global SIP->
Advanced SIP Settings
Configuration Files aastra.cfg, <mac>.cfg
Description The length of time, in seconds, prior to expiration, that the phone renews
registrations.
For example, if the value is set to 20, then 20 seconds before the
registration is due to expire, a new REGISTER message is sent to the
registrar to renew the registration.
Format Integer
Default Value 15
Range 0 to 214748364
The value set for this parameter should be between 0 and the value set
for the registration period.
Example sip registration renewal timer: 10
Parameter –
sip blf subscription period
BLF Subscription Period
(in Web UI)
Aastra Web UI Advanced Settings->Global SIP
->Advanced SIP Settings
Configuration Files aastra.cfg, <mac>.cfg
Description Specifies the time period, in seconds, that the IP phone resubscribes the
BLF subscription service after a software/firmware upgrade or after a
reboot of the IP phone.
Format Integer
Default Value 3600
Range 120 (2 minutes is the minimum value)
Example sip blf subscription period: 2000