[Freeswitch-users] Problems with Ping and re-registering broken gateways

[Andy]

Hi,
 
I'm fairly sure my problem lies with my voip provider VoipTalk but wonder if
you could help me understand a couple of things. My config is very simple,
I'm using freeswitch to accept incoming calls via a voip gateway and record
messages. Here's the problem:
 
- When freeswitch starts the gateways are all created and register correctly
 
- I have the ping parameter set to make sure the gateway stays alive.
 
- The first time freeswitch pings the gateway it fails even though the
registration appears intact as calls are still coming through to freeswitch
 
- Freeswitch then tries to re-register the gateway but this fails. The SIP
trace shows an Unauthorized message and the actual log entry is
'Registration Failed with status Operation has no matching challenge  [904]'
 
- eventually the registration times out with my provider and all is lost.
 
- if I call 'sofia profile external restart' or restart the software this
fixes the problem
 
My questions are:
 
1) Why would the ping fail when the registration appears to be intact?
2) Whay would the auto re-register not work but a restart would?
 
This ones driving me nuts so any help greatly appreciated.
 
regards
Andy
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