Yealink SIP-T23, Provisioning Manual

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Troubleshooting
59
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.
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.
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.