Yealink SIP-T40G User Manual

User Guide for T4 Series IP Phones
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The DND icon appears on the status bar.
Note
Deactivating DND in Phone Mode
You can deactivate DND to receive incoming calls.
Procedure:
1. Press DND again when the phone is idle.
The DND icon disappears on the status bar.
Custom Mode
If there is only one account registered on the phone, you can directly press the DND soft key to
activate or deactivate DND on the Idle screen. The following shows you to activate or deactivate
DND when there are multiple registered accounts.
Activating DND in Custom Mode
Procedure:
1. Press DND.
The LCD screen displays a list of accounts registered on the phone.
When DND and busy forward are activated in phone mode, calls will be forwarded to the
configured destination number. For more information on busy forward, refer to Call Forward.
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Yealink SIP-T40G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Wall mountable	Yes
Wi-Fi	No
Security algorithms	AES, HTTPS, SSL/TLS
Networking standards	IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	FTP, TFTP, HTTP, HTTPS
Voice codecs	G.711, G.711a, G.711u, G.722, G.726, G.729ab
RJ-11 ports quantity	1
Ethernet LAN (RJ-45) ports	2
AC adapter input voltage	100 - 240 V
AC adapter output current	0.6 A
AC adapter output voltage	5 V
Power consumption (typical)	1.6 W
Certification	CE, FCC, ISO 9001
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 90 %
Volume control	Digital
Display diagonal	2.3 \
Display resolution	132 x 64 pixels
Lines quantity	3 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	3
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	175 mm
Width	212 mm
Height	54 mm