Yealink SIP-T40G Auto Provisioning Guide

Yealink IP Phones Auto Provisioning Guide
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Why is the permission denied when uploading files to the root directory of the FTP server?
 Ensure that the complete path to the root directory of the FTP server is authorized.
 Check security permissions on the root directory of the FTP server, if necessary, change the
permissions.
Why doesn’t the IP phone obtain the IP address from the DHCP server?
 Ensure that settings are correct on the DHCP server.
 Ensure that the IP phone is configured to obtain the IP address from the DHCP server.
Why doesn’t the IP phone download the ring tone?
 Ensure that the file format of the ring tone is *.wav.
 Ensure that the size of the ring tone file is not larger than that the IP phone supports.
 Ensure that the properties of the ring tone for the IP phone are correct.
 Ensure that the network is available and the root directory is right for downloading.
 Ensure that the ring tone file exists on the provisioning server.
Why doesn’t the IP phone update configurations?
 Ensure that the configuration files are different from the last ones.
 Ensure that the IP phone has downloaded the configuration files.
 Ensure that the parameters are correctly set in the configuration files.
 Ensure that the value of the parameter “static.auto_provision.custom.protect” is set to 0. If it
is set to 1, the provisioning priority is shown as follows: phone/web user interface >central
provisioning >factory defaults. A setting you make using a lower-priority method does not
apply to or override a duplicate setting made using a higher-priority method.
For more information, refer to the latest Administrator Guide for your phone on Yealink
Technical Support.

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