Operational, Basic, and Advanced Parameters
A-62 41-001160-00, Release 2.1, Rev 04
IP Phone Administrator Guide
Appendix A
Advanced SIP Settings
Parameter –
sip explicit mwi subscription
Explicit MWI Subscription
(in Web UI)
Aastra Web UI Advanced Settings->Global SIP->
Advanced SIP Settings
Configuration Files aastra.cfg, <mac>.cfg
Description If the IP phone has a message waiting subscription with the Service
Provider, a Message Waiting Indicator (MWI) (LED or display icon) tells
the user there is a message on the IP Phone. You can enable and
disable MWI by setting this parameter to the following:
"0" to disable
"1" to enable
Format Boolean
Default Value 0
Range 0 (disable)
1 (enable)
Example sip explicit mwi subscription: 1
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