Yealink SIP-T40G Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
252
Description
It enables or disables the minimum password strength limit.
Permitted
Values
0-Disabled
1-Enabled, when the Bluetooth device is paired with the phone, the minimum password strength can-
not be lower than 56bits.
Default
1
Supported
Devices
T57W, T54W, T53W, T53, T48U, T48S, T46U, T46S, T43U, T42U, T42S, T41S, T27G, CP920
Web UI
Features > Bluetooth > High Security Pairing
[1]
If you change this parameter, the phone will reboot to make the change take effect.
Handset/Headset/Speakerphone Mode
Yealink phones support three ways to place/answer a call: using the handset, using the headset or using the speak-
erphone. You can disable the infrequently used audio device as required.
Topic
Handset/Headset/Speakerphone Mode Configuration
Handset/Headset/Speakerphone Mode Configuration
The following table lists the parameters you can use to configure handset/headset/speakerphone mode.
Parameter
features.speaker_mode.enable <y0000000000xx>.cfg
Description
It enables or disables the phone’s speakerphone mode.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Supported
Devices
All phones except CP920
Parameter
features.handset_mode.enable <y0000000000xx>.cfg
Description
It enables or disables the phone’s handset mode.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Supported
Devices
All phones except CP920
Parameter
features.group_listen_in_talking_enable <y0000000000xx>.cfg
Description
It enables or disables the phone to enter into the group listening mode by pressing the Speakerphone
key when you first answer the call using the handset.
Note: The audio is sent only through the handset. So you are able to speak and listen through the
handset, but you can only listen through the speaker.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Supported
All phones except CP920

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