Summary:ASTERISK-09784: Calls get disconnected during a conversation
Reporter:Bastian Marmetschke (basty)Labels:
Date Opened:2007-06-29 01:38:22Date Closed:2011-06-07 14:02:52
Versions:Frequency of
Environment:Attachments:( 0) sip-debug
( 1) sip-debug.txt
Description:We have several Snom Hardphones on Asterisk 1.2.19, sometimes during a call (external/internal) it breaks up with following Warning in the Asterisk CLI:

WARNING[18252] chan_sip.c: Maximum retries exceeded on transmission 3d2cca1cf1b3-c6cbjoxi8rvb@snom320-00041324A7FD for seqno 2 (Critical Response)


The Problem seems to exist after Version 1.2.13. I allready tried to fix the issue changing "res = transmit_response_with_sdp(p, "200 OK", &p->initreq, 2);" to "res = transmit_response_with_sdp(p, "200 OK", &p->initreq, 1);" (in the chan_sip.c). But there is still the same behavior.
Comments:By: Joshua C. Colp (jcolp) 2007-06-29 07:05:12

A sip debug is required before we can look at this.

By: Bastian Marmetschke (basty) 2007-07-02 06:36:42

SIP-Debug attached!

By: Joshua C. Colp (jcolp) 2007-07-05 08:39:35

It looks like chan_sip is not processing the 200 OK in response to a NOTIFY... basically a blind transfer happened and the NOTIFY is sent out to say "hey everything went fine"... the Snom sends back a 200 OK to acknowledge receipt of the NOTIFY and chan_sip ignores it.

Can you turn on debug in logger.conf, do a set debug 9 on the console, and recreate it? It should say why chan_sip is ignoring the packet.

By: Bastian Marmetschke (basty) 2007-07-18 02:37:33

I will try it again, problem is - that this Problem happends during a conversation. No blindtransfer was used. The phone rings and suddenly the call breaks up.

By: Bastian Marmetschke (basty) 2007-07-18 06:22:07

Okay - new "Sip-Debug" ist uploaded! :)

By: Jared Smith (jsmith) 2007-07-18 07:33:35

Could you please upload a SIP debug that actually shows the SIP traffic?  Without seeing the SIP messaging itself, it's going to be difficult to debug.

By: mike240se (mike240se) 2007-07-23 14:33:49

I am having the same issue.  I am also using a snom phone too.  Could this be a snom phone issue?  What firmware version are you using?

By: Bastian Marmetschke (basty) 2007-07-24 01:41:26

I dont think that this is a Snom Firmware issue. I am using FW from 6.2.3 up to 7.X.X with the same Problem.

By: Grzegorz Garlewicz (garlew) 2007-08-01 15:31:06

Seems to be related to ASTERISK-5175215 and similar bugs - asterisk not being able to distinguish between different simultaneous sip transactions.

By: Jason Parker (jparker) 2007-08-29 16:34:03

Is this also an issue with 1.4?

By: Joshua C. Colp (jcolp) 2007-10-29 12:09:15

Suspended due to lack of response. If this is still an issue feel free to reopen with the needed information.