intermittent "forbidden" with iinet SIP service

mattr

this is a great package, I use it with my ozemail (iinet) net2phone sip service every day, call audio quality is excellent. however i notice frequently that the iinet sip gateway returns a "forbidden" error message when I try to place an outgoing call. If I shut down the express talk client and restart it (i.e re-registration) it all comes back and works fine again. I can't yet pinpoint why the "call forbidden" state should arise but I suspect the registration on the sip gateway has somehow expired/defaulted?

I'm running XP sp2 professional

any clues as to why or what I can do to investigate?

heres the log ( a few edits to remove personal numbers)

09:29:11 Incoming SIP call

09:29:13 Call has disconnected

10:58:42 Initiated sip call to: 9029xxxx

10:58:42 Error returned: Forbidden

10:58:42 Call has disconnected

11:00:43 Express Talk Run

11:00:44 SIP Private IP is: my ip address:5070

11:00:44 SIP Public IP is: 210.84.48.200:18396

11:00:44 SIP Number: mynumber@210.84.48.200:18396

11:00:44 Attempting to register sip:mynumber@sip.NSW.iinet.net.au

11:00:44 Registered as: sip:mynumber@sip.NSW.iinet.net.au

11:01:17 Initiated sip call to: 9029xxxx

11:01:26 Call answered

11:16:51 Call has disconnected

11:16:59 Initiated sip call to: 1800881011

11:16:59 Error returned: Forbidden

11:16:59 Call has disconnected

11:17:21 Express Talk Run

11:17:21 SIP Private IP is: my ip address:5070

11:17:21 SIP Public IP is: 210.84.48.200:18396

11:17:21 SIP Number: mynumber@210.84.48.200:18396

11:17:21 Attempting to register sip:mynumber@sip.NSW.iinet.net.au

11:17:21 Registered as: sip:mynumber@sip.NSW.iinet.net.au

14:19:33 Initiated sip call to: 1800881011

14:19:35 Call initiate attempt abandoned ( it was ringing at this point so problem fixed)

14:19:35 Call has disconnected

14:19:37 Initiated sip call to: 1800881011

14:19:39 Call initiate attempt abandoned

14:19:39 Call has disconnected

pythonpoole

I don't know for sure, but it sounds to me as this is a case of the VoIP provider not liking ATAs or softphones that don't register every minute. I've seen a similar problem before, and it was a simple case of forcing the software to re-register every 55 to 60 seconds. However as far as I know, I don't think Express Talk has that option. :/

mattr

pythonpoole wrote:

I don't know for sure, but it sounds to me as this is a case of the VoIP provider not liking ATAs or softphones that don't register every minute. I've seen a similar problem before, and it was a simple case of forcing the software to re-register every 55 to 60 seconds. However as far as I know, I don't think Express Talk has that option. :/

Thanks I think you're right pythonpoole, but some further checks reveals that if I don't make any outgoing calls it stays registered no mater how long it sits there, however if I make a call that lasts over x mins (not sure of the length yet) I get the problem of needing to re-register. Perhaps this software assumes it doesn't need to re-register whilst in a call...