Yealink SIP-T2XP Administrator's Manual page 366

Administrator's Guide for SIP-T2xP and SIP-T19P IP Phones
Parameter-
account.X.subscribe_mwi
Description
Format
Default Value
Value
Example
Parameter-
account.X.subscribe_mwi_expires
Description
Format
Default Value
Value
Example
350
Configuration File
<MAC>.cfg
Enables or disables the IP phone to
subscribe the message waiting indicator to
the account for account X.
If it is set to 1 (Enabled), the IP phone will
send a SUBSCRIBE message to the server
for message-summary updates.
X ranges from 1 to 6.
Boolean
0
Valid values are:
0-Disabled
1-Enabled
account.1.subscribe_mwi = 0
Configuration File
<MAC>.cfg
Configures MWI subscribe expiry time (in
seconds) for account X.
The IP phone is able to successfully refresh
the SUBCRIBE for message-summary events
before expiration of the SUBSCRIBE dialog.
X ranges from 1 to 6.
Note: It works only if the parameter
"account.X.subscribe_mwi" is set to 1
(Enabled).
Integer
3600
0 to 84600
account.1.subscribe_mwi_expires = 3600