service unavailable error in sip server

[Gautham]

Hi friends,

I am facing service unavailable error in sip server. Its configured for secure port.
******log********
11:48:53.508: Start Retry Listen Timer in 24000
CGCL2Listener: Unable to open port 5060 for listening, result -1
11:48:53.508: Start Retry Listen Timer in 24000
CGCL2Listener: Unable to open port 5060 for listening, result -1
11:48:53.508: Start Retry Listen Timer in 24000
11:49:00.492: LCALayer_RequestProcessInfo failed with -1
11:49:10.555: LCALayer_RequestProcessInfo failed with -1
11:49:20.618: LCALayer_RequestProcessInfo failed with -1
error: ConnNS.cpp:301 cannot resolve ip address to the FQDN
CGCL2Listener: Unable to open port 5061 for listening, result -1
11:49:26.555: Start Retry Listen Timer in 24000
CGCL2Listener: Unable to open port 5060 for listening, result -1
11:49:26.555: Start Retry Listen Timer in 25000

*************

I am getting this error from the sip log. Pls help me fnds...

[hsujdik]

Is sip-address configured? Is sip-port the same as the secure port? Is port 5060 being used by any other process on this host? For the error, it is very likely that the host where SIP Server resides does not have the IP address configured on sip-address option of SIP Server.

Or, if using HA takeover scripts, check if they are correctly configured with the Virtual IP address set properly for the correct Network Card