The MWI Subscription parameters you need to know:
Options
Subscribe for MWI
MWI Subscription Period
To enable MWI subscription via web user interface:
1.
Click on Account->Advanced.
2.
Select Enabled from the pull-down list of Subscribe for MWI.
3.
Enter the period time (in seconds) in the MWI Subscription Period (Scope: 0~84600)
(seconds) field.
4.
Click Confirm to accept the change.
Description
Enable or disable a subscription for MWI service.
Period of MWI subscription. The IP phone re-sends a
MWI subscription before expiring.
Advanced Phone Features
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