Appendix E: Troubleshooting
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T207M, T208M, T207M/NP, T208M/BL User Guide
Appendix E: Troubleshooting
Failure Messages
The following failure messages may appear on your phone to indicate there is a connection error. See the table below to
determine the cause of the problem and the solution.
Failure Message
Problem
Solution / Action
Check Network
Connection
The keyset initialized but cannot connect to the
network.
Check the connection to the LAN/PC and
then reboot.
CODEC MISMATCH
Each phone operates a specific set of codecs that
determines the compression rate at which the
phone communicates with the Coral.
This message indicates that the compression rate
of your phone has not been correctly defined in the
Class of Service (COS).
Notify your system administrator.
IP Address not Legal
The static Self IP Address defined in the phone is
invald.
Notify your system administrator
No DNS server address
The DNS Server IP Address was not provided by
the DHCP Server. There is no DNS Server defined
in the phone.
Notify your system administrator.
No Net Mask
There is no Subnet Mask configured in the phone. Notify your system administrator.
NO PHYSICAL LINK
Your phone is not connected to the network.
Check all wires, connections, hubs and
switches to determine if any parts or
components are unplugged or damaged.
