Yealink SIP-T40G Administrator's Guide

Table of Contents
17
Importing CFG Configuration Files to Phone
550
Configuration Files Import URL Configuration
550
Exporting BIN Files from the Phone
550
Importing BIN Files from the Phone
550
BIN Files Import URL Configuration
550
Device Status
551
Viewing Device Status
551
Phone Reboot
551
Rebooting the IP Phone Remotely
551
Notify Reboot Configuration
552
Rebooting the Device via the Phone User Interface
552
Rebooting the Device via Web User Interface
552
Troubleshooting Solutions
553
IP Address Issues
553
The device does not get an IP address
553
Solving the IP conflict problem
553
The Specific format in configuring IPv6 on Yealink phones
553
Time and Date Issues
554
Display time and date incorrectly
554
Display Issues
554
The phone screen is blank
554
The phone displays “No Service”
554
Phone Book Issues
554
Difference between a remote phone book and a local phone book
554
Audio Issues
554
Increasing or decreasing the volume
554
Get poor sound quality during a call
554
There is no sound when the other party picks up the call
555
Play the local ringback tone instead of media when placing a long-distance number without plus 0
555
Wi-Fi and Bluetooth Issues
555
The wireless signal strength is low
555
The phone cannot connect to Bluetooth devices all the time
555
The Bluetooth headset affects IP phone’s voice quality
555
Firmware and Upgrading Issues
555
Fail to upgrade the phone firmware
555
Verifying the firmware version
556
The IP phone does not update the configurations
556
System Log Issues
557
Fail to export the system log to a provisioning server (FTP/TFTP server)
557
Fail to export the system log to a syslog server
557
Protocols and Ports Issues
557
What communication protocols and ports do Yealink IP phones support?
557
Password Issues
558
Restore the administrator password
558

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