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Yealink SIP-T53W Auto Provisioning Guide

Yealink SIP-T53W
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Troubleshooting
53
Troubleshooting
This chapter provides general troubleshooting information to help you solve problems you
might encounter when deploying phones.
If you require additional information or assistance with the deployment, contact your system
administrator.
Why does the IP phone fail to download configuration files?
Ensure that auto provisioning feature is configured properly.
Ensure that the provisioning server and network are reachable.
Ensure that authentication credentials configured on the IP phone are correct.
Ensure that configuration files exist on the provisioning server.
Ensure that MAC-Oriented boot file and common boot file don’t exist simultaneously on
the provisioning server. If both exist, the IP phone only downloads MAC-Oriented boot file
and the configuration files referenced in the MAC-Oriented boot file.
Why does the IP phone fail to authenticate the provisioning server during auto
provisioning?
Ensure that the certificate for the provisioning server has been uploaded to the phone’s
trusted certificates list. If not, do one of the following:
- Import the certificate for the provisioning server to the phone’s trusted certificates list
(at phone’s web path Security->Trusted Certificates->Import Trusted Certificates).
- Disable the IP phone to only trust the server certificates in the trusted certificates list
(at phone’s web path Security->Trusted Certificates->Only Accept Trusted
Certificates).
Why does the provisioning server return HTTP 404?
Ensure that the provisioning server is properly set up.
Ensure that the access URL is correct.
Ensure that the requested files exist on the provisioning server.
Why does the IP phone display "Network unavailable"?
Ensure that the Ethernet cable is plugged into the Internet port on the IP phone and the
Ethernet cable is not loose.
Ensure that the switch or hub in your network is operational.
Ensure that the configurations of network are properly set in the configuration files.

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Yealink SIP-T53W Specifications

General IconGeneral
MountingDesk/Wall
Handset typeWired handset
Product typeIP mobile phone
Product colorGray
Keypad illuminationYes
Wi-Fi standards802.11a, 802.11g, Wi-Fi 4 (802.11n)
Bluetooth version4.2
Security algorithmsAES, HTTPS, SIPS
Networking standardsIEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN interface typeGigabit Ethernet
Supported network protocolsFTP/TFTP/HTTP/HTTPS
Dual-Tone Multi-Frequency (DTMF) modesIn-band, Out-of band, SIP info
USB 2.0 ports quantity1
Ethernet LAN (RJ-45) ports2
Lines quantity8 lines
Phonebook capacity1000 entries
Number of VoIP accounts12
AC adapter input voltage100 - 240 V
AC adapter output current1.2 A
AC adapter output voltage5 V
Power consumption (typical)2.3 W
Volume controlButtons
Number of programmable keys8
Storage temperature (T-T)-30 - 70 °C
Operating temperature (T-T)0 - 40 °C
Operating relative humidity (H-H)10 - 95 %
Display diagonal3.7 \
Display resolution360 x 160 pixels
Cables includedLAN (RJ-45)
Number of handles included1 pc(s)
Number of DECT wireless handsets4
Voice codecsG.722, G.723.1, G.726, G.729A, G.729B, OPUS, iLBC
Weight and Dimensions IconWeight and Dimensions
Depth210.6 mm
Width212 mm
Height174.5 mm

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