Aastra Telecom AASTRA 9112 I - Manual (Page 15)

New Features in 1.4.1
41-001024-00, Rev 09, Release 1.4.1 11
SIP IP Phone Models 480i, 480i CT, 9112i, 9133i Release Notes
Explicit Message Waiting Indicator (MWI) Subscription Period
The IP phones support a new feature for MWI that allows the administrator to set
a requested duration, in seconds, before an explicit MWI subscription times out.
The phone re-subscribes to MWI before the subscription period ends.
The new parameter you can configure is “sip explicit mwi subscription period”.
You can configure this parameter using the configuration files or the Aastra Web
UI.
Configuring via the Configuration Files
You configure the explicit MWI timeout using the following parameter in the
configuration files.
Parameter –
sip explicit mwi subscription
period
Explicit MWI Timeout
(in Web UI)
Aastra Web UI Advanced Settings->Global SIP->
Advanced SIP Settings
Configuration Files aastra.cfg, <mac>.cfg
Description The requested duration, in seconds, before the MWI subscription times
out. The phone re-subscribes to MWI before the subscription period
ends.
Format Integer
Default Value 86400
Range 30 - 214748364
Example sip explicit mwi timeout: 30