This is an issue I'm having as well. Here is what I've discovered. Call comes in on a T1 line. Call is sent to a SIP phone (say 4000) based on the extensions.conf setup. User of phone 4000 has set a forward in the phone to an external number, 1-555-555-5555. There is nothing telling Asterisk to Dial(Zap/g1) so the call does not get converted back to slin to send along the T1 lines out of the building. Since SIP can't be sent the frame is incompatible and is dropped. I know this probably isn't as technical as it should be but in essence it is what is happening. I've had to do a workaround and set up an extension that dials the number that the phone was to be forwarded too. I set up extension 500. The user forwards the phone to 500. extensions.conf says Dial(Zap/g1/15555555555).
Band-aid solution. I've seen on the bug reports it is a known issue but not resolved yet. Last update was July 5th. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of M D Sent: Thursday, August 10, 2006 8:50 AM To: [email protected] Subject: [asterisk-users] Fwd: Dropping incompatible frame killing Asterisk Hi there We're running Asterisk 1.2.1 (I know, it's old; we have an upgrade planned but can't do it just yet) on Debian testing. Every now and Asterisk and the box are dying -- no SSH login, no calls, nothing. The last lines logged are: Jul 31 14:23:31 VERBOSE[32696] logger.c: -- Executing Dial("SIP/5060-0843a7f0", "SIP/123456|30") Jul 31 14:23:31 VERBOSE[32696] logger.c: -- Called 123456 Jul 31 14:23:31 VERBOSE[14085] logger.c: -- Got SIP response 302 "Moved Temporarily" back from 85.189.x.x Jul 31 14:23:31 VERBOSE[32696] logger.c: -- Now forwarding SIP/5060-0843a7f0 to 'Local/[EMAIL PROTECTED]' (thanks to SIP/123456-2241) Jul 31 14:23:31 VERBOSE[32701] logger.c: -- Executing Dial("Local/[EMAIL PROTECTED],2", "SIP/[EMAIL PROTECTED]:5070") in new stack Jul 31 14:23:31 VERBOSE[32701] logger.c : -- Called [EMAIL PROTECTED]:5070 Jul 31 14:23:31 VERBOSE[32701] logger.c: -- SIP/outbound.gateway:5070-550a is ringing Jul 31 14:23:31 VERBOSE[32696] logger.c: -- Local/[EMAIL PROTECTED],1 is ringing Jul 31 14:23:31 VERBOSE[32701] logger.c: -- SIP/outbound.gateway:5070-550a is making progress passing it to Local/[EMAIL PROTECTED],2 Jul 31 14:23:31 VERBOSE[32696] logger.c: -- Local/[EMAIL PROTECTED] _110-7282,1 is making progress passing it to SIP/5060-0843a7f0 Jul 31 14:23:31 NOTICE[32701] channel.c: Dropping incompatible voice frame on Local/[EMAIL PROTECTED],2 of format slin since our native format has changed to alaw Jul 31 14:23:31 NOTICE[32701] channel.c: Dropping incompatible voice frame on Local/[EMAIL PROTECTED],2 of format slin since our native format has changed to alaw The last lines are repeated until the server dies. The phone appears to be a SNOM and should be using only g.711 alaw or ulaw. I inherited this box with Asterisk running as root so I've changed it to a non-privileged user but assuming the server is dynig through resource starvation I doubt it'll help. So, any ideas what this traffic is? What can we do to stop it? Clearly I need to upgrade Asterisk but a cursory glance at the changelog doesn't suggest a bug was reported with these symptoms which would have been fixed in a later release. Cheers, Mark _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
