Yealink SIP-T40P User Manual

User Guide for the SIP-T40P IP Phone
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The LCD screen displays the amount of new and old voice mails.
2. Select an account and then press the Connect soft key to listen to voice mails.
Message Waiting Indicator (MWI)
The SIP-T40P IP phone supports MWI when receiving a new voice message. If someone leaves
you a voice mail, you will receive a message waiting indicator. MWI will be indicated in three
ways: a warning tone, an indicator message (including a voice mail icon) on the LCD screen, and
the power indicator LED slowly flashes red. This will be cleared when you retrieve all voice mails
or delete them.
The MWI service is unsolicited for some servers, so the SIP-T40P IP phone only handles the MWI
messages sent from the server. But for other servers, the MWI service is solicited, so the
SIP-T40P 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.
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.

Yealink SIP-T40P Specifications

General

Wi-Fi	No
Quality of Service (QoS) support	Yes
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
AC adapter input voltage	100 - 240 V
AC adapter output current	0.6 A
Power consumption (typical)	3.23 W
Battery voltage	5 V
RJ-11 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Display diagonal	2.3 \
Display resolution	132 x 64 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	3
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Voice codecs	G.711, G.722, G.726, G.729A, G.729B
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	189 mm
Width	212 mm
Height	175 mm
Package depth	256 mm
Package width	620 mm
Package height	233 mm
Package weight	6400 g