Florian Wolters wrote: > > So I turned on SIP debug for this host and analyszed it with wireshark. > The last packets show an INVITE from my provider, that is answered by my > Asterisk with "200 OK, with session description". What follows is an ACK > by the provider and immediately a BYE sent by the provider. So for me it > looks like the provider is disconnecting the call.
Florian, This is a little hard to diagnose without seeing the SIP traffic for the duration of the call. It makes it impossible to tell if the INVITES the provider is sending are related to the call (i.e. have the same Call-ID header), but if they are being sent consistently 15 minutes into every call it may not matter. If the provider is sending you unsolicited INVITES that cause your calls to drop, I'd suggest contacting their customer service and asking them why they are being sent. The provider actually sent you two INVITES in rapid succession with different Call-IDs. To keep this simple, I'll use the following shorthand: Call 1 = Call-ID [email protected] Call 2 = Call-ID [email protected] Call 1 is terminated with a BYE from Asterisk immediately after it gets the ACK from the provider. The provider tried to terminate it immediately with its own BYE, but it lost the race. This results in the Call/Transaction Does Not Exist message at the end of that dialog. Call 2 is terminated with a BYE from the provider immediately after they ACK the OK from Asterisk. As I said above, I'd start out by asking the provider why they are sending these INVITES in the first place. Here is the simple timeline derived from your SIP trace that I worked from: Call 1 Call 2 ------------------------------------ ------------------------------------ 13:37:54.240304 INVITE From Provider to Asterisk 13:37:54.240497 INVITE From Provider to Asterisk 13:37:54.240593 Trying From Asterisk to Provider 13:37:54.240752 OK From Asterisk to Provider 13:37:54.240976 Trying From Asterisk to Provider 13:37:54.241172 OK From Asterisk to Provider 13:37:54.282723 ACK From Provider to Asterisk 13:37:54.286434 BYE From Provider to Asterisk 13:37:54.286700 OK From Asterisk to Provider 13:37:54.339838 OK From Asterisk to Provider 13:37:54.384756 ACK From Provider to Asterisk 13:37:54.385007 BYE From Asterisk to Provider 13:37:54.388625 BYE From Provider to Asterisk 13:37:54.388816 OK From Asterisk to Provider 13:37:54.404027 Call/Transaction Does Not Exist From Provider to Asterisk Regards, Matthew Roth InterMedia Marketing Solutions Software Engineer and Systems Developer -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
