Yealink SIP-T2 SERIES Administrator's Manual page 604

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Details of Configuration Parameters:
account.X.subscribe_mwi
Description:
Enables or disables the IP phone to subscribe the message waiting indicator for
account X.
0-Disabled
1-Enabled
If it is set to 1 (Enabled), the IP phone will send a SUBSCRIBE message to the server
for message-summary updates.
If it is set to 0 (Disabled), the server automatically sends a message-summary
NOTIFY in a new dialog each time the MWI status changes. (This requires server
support)
X ranges from 1 to 16 (for SIP VP-T49G/SIP-T48G/T46G/T29G)
X ranges from 1 to 12 (for SIP-T42G)
X ranges from 1 to 6 (for SIP-T41P/T27P)
X ranges from 1 to 3 (for SIP-T40P/T23P/T23G)
X ranges from 1 to 2 (for SIP-T21(P) E2)
X is equal to 1 (for SIP-T19(P) E2/CP860)
Web User Interface:
Account->Advanced->Subscribe for MWI
Phone User Interface:
None
582
Phone User Interface
Parameters
Navigate to:
For
SIP-T48G/T46G/T42G/T41P/T40P/T29G/
T27P/T23P/T23G/T21(P) E2/T19(P)
E2/CP860:
http://<phoneIPAddress>/servlet?p
=account-adv&q=load&acc=0
For SIP VP-T49G:
http://<phoneIPAddress>/servlet?m
=mod_data&p=account-adv&q=lo
ad&acc=0
Configure the
voice mail number for
account X.
Permitted Values
0 or 1
Default
0