Yealink T21PE2 User Manual

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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If it is the first time you place a call via web user interface, the LCD screen will prompt the message “Allow remote con-
trol?”. Press OK on the phone to allow remote control and then the phone will automatically dial out the number.
Note
You can also place an IP direct call via web user interface. The IP phone supports either IPv4 or IPv6 address..
Voice Mail
Yealink IP phones support voice mail.
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 IP 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 IP 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 IP 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 IP 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 IP 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).
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 IP phone to parse the Terminated attribute in the received MWI NOTIFY mes-
sage.

Yealink T21PE2 Specifications

General

Brand	Yealink
Model	T21PE2
Category	IP Phone
Language	English