User Guide

User Guide for the SIP-T21(P) E2 IP Phone
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mails or delete them.
The MWI service is unsolicited for some servers, so the SIP-T21(P) E2 IP phone only handles the
MWI messages sent from the server. But for other servers, the MWI service is solicited, so the
SIP-T21(P) E2 IP phone must enable subscription for MWI.
Note
The MWI subscription parameters you need to know:
Options
Description
Subscribe for MWI
Enable or disable a subscription for MWI service.
MWI Subscription Period
Period of MWI subscription. The IP phone sends a refresh
SUBSCRIBE request before initial SUBSCRIBE expiration.
Subscribe MWI To Voice
Mail
Enable or disable a subscription to the voice mail number for
MWI service.
To use this feature, you should also configure the voice mail
number.
Note
To configure subscribe for MWI via web user interface:
1. Click on Account->Advanced.
2. Select the desired account from the pull-down list of Account.
3. Select Enabled from the pull-down list of Subscribe for MWI field.
MWI service is not available on all servers. Contact your system administrator for more
information.
The phone will send SUBSCRIBE messages for the MWI service to the account or the voice
number MWI service depending on the server. Contact your system administrator for more
information.