Yealink SIP-T40G User Manual

User Guide for T4 Series IP Phones
140
Conference
The IP phones support 3-way local conference and multi-way network conference.
Note
Local Conference
The IP phones support three-way (including yourself) conference call, which is the default
conference type called Local Conference. You can set up a conference between an active call
and a hold call at any time by pressing the Conference (Conf) soft key.
Note
Setting Up a Local Conference Call
Procedure:
1. Place a call to the first party.
2. When the first party answers the call, press Conference (Conf) to place a new call.
3. Enter the number of the second party to dial out.
You can also select a desired contact from the search list, or select a contact from the
placed call list or Directory before you enter the number. On the SIP-T48S/T48G IP phone,
you can select a desired contact from the left sidebar, or select a contact from the Directory
or History.
The active call is placed on hold.
4. When the second party answers the call, press Conference (Conf) again to join all parties in
the conference.
Network conference is not available on all servers. For more information, contact your system
administrator.
To set up a local conference call, make sure local conference feature is enabled. For more
information, contact your system administrator.
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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