Cisco ASA Series Cli Configuration Manual page 1231

Chapter 1 Configuring the Cisco Phone Proxy
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IP Phone Registration Failure
The following errors can make IP phones unable to register with the phone proxy:
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TFTP Auth Error Displays on IP Phone Console
Problem
TFTP Auth Error
Solution
To correct problems with the IP phone CTL file, perform the following:
Step 1
From the IP phone, select the Setting button > Security Configuration > Trust List. Verify that each
entity in the network—Primary Cisco UCM, Secondary Cisco UCM, TFTP server—has its own entry in
the trustlist and that each entity IP address is reachable by the IP phone.
Check the Security settings on the IP phone by selecting the Settings button > Security
Configuration. Settings for web access, Security mode, MIC, LSC, CTL file, trust list, and CAPF
appear. Under Security mode, make sure the IP phone is set to Encrypted.
Check the IP phone to determine which certificates are installed on the phone by selecting the
Settings button > Security Configuration > Trust List. In the trustlist, verify the following:
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Make sure that there is an entry for each entity that the IP phone will need to contact. If there
is a primary and backup Cisco UCM, the trustlist should contain entries for each Cisco UCM.
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If the IP phone needs an LSC, the record entry should contain a CAPF entry.
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Make sure that the IP addresses listed for each entry are the mapped IP addresses of the entities
that the IP phone can reach.
Open a web browser and access the IP phone console logs at the URL
. The device information appears in the page. In the Device Logs section in the left pane,
address
click Console Logs.
TFTP Auth Error Displays on IP Phone Console, page 1-33
Configuration File Parsing Error, page 1-34
Configuration File Parsing Error: Unable to Get DNS Response, page 1-34
Non-configuration File Parsing Error, page 1-35
Cisco UCM Does Not Respond to TFTP Request for Configuration File, page 1-35
IP Phone Does Not Respond After the Security Appliance Sends TFTP Data, page 1-36
IP Phone Requesting Unsigned File Error, page 1-37
IP Phone Unable to Download CTL File, page 1-37
IP Phone Registration Failure from Signaling Connections, page 1-38
SSL Handshake Failure, page 1-40
Certificate Validation Errors, page 1-41
The IP phone displays the following Status message:
This Status message can indicate a problem with the IP phone CTL file.
Troubleshooting the Phone Proxy
http://IP_phone_IP
Cisco ASA Series CLI Configuration Guide
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