Yealink T5 Series Administrator's Guide

Advanced Features
377
You can configure a message waiting indicator (MWI) to inform users that how many messages are waiting in their
mailbox without calling the mailbox. Yealink phones support both audio and visual MWI alert when receiving new
voice messages.
Topic
MWI for Voice Mail Configuration
MWI for Voice Mail Configuration
Yealink phones support both solicited and unsolicited MWI.
Unsolicited MWI: The IP phone sends a SUBSCRIBE message to the server for message-summary updates. The server
sends a message-summary NOTIFY within the subscription dialog each time the MWI status changes. Unsolicited MWI
is a server related feature.
Solicited MWI: The IP phone can subscribe the MWI messages to the account or the voice mail number. For solicited
MWI, you must enable MWI subscription feature on the phones.
The following table lists the parameters you can use to configure MWI for voice mail.
Parameter
account.X.subscribe_mwi
[1]
<MAC>.cfg
Description It enables or disables the phone to subscribe the message waiting indicator.
Permitted
Values
0-Disabled, the server automatically sends a message-summary NOTIFY in a new dialog each time the
MWI status changes. (This requires server support).
1-Enabled, the phone will send a SUBSCRIBE message to the server for message-summary updates.
Default 0
Web UI Account->Advanced->Subscribe for MWI
Parameter
account.X.subscribe_mwi_expires
[1]
<MAC>.cfg
Description
It configures MWI subscribe expiry time (in seconds).
The phone is able to successfully refresh the SUBSCRIBE for message-summary events before the expir-
ation of the subscription dialog.
Note: It works only if “account.X.subscribe_mwi” is set to 1 (Enabled).
Permitted
Values
Integer from 0 to 84600
Default 3600
Web UI Account->Advanced->MWI Subscription Period (Seconds)
Parameter
account.X.mwi_parse_terminated
[1]
<MAC>.cfg
Description It enables or disables the phone to parse the Terminated attribute in the received MWI NOTIFY message.
Permitted
Values
0-Disabled
1-Enabled
Default 0
Parameter
account.X.sub_fail_retry_interval
[1]
<MAC>.cfg
Description It configures the interval (in seconds) for the phone to retry to re-subscribe when subscription fails.
Permitted
Integer from 0 to 3600

Yealink T5 Series Specifications

General

Brand	Yealink
Model	T5 Series
Category	IP Phone
Language	English