Summary:	ASTERISK-19765: CLONE - ACK is ignored upon call-pickup with sendrpid=yes
Reporter:	dsf1284 (dsf1284)	Labels:
Date Opened:	2012-04-20 16:47:19	Date Closed:	2012-04-24 13:55:16
Priority:	Critical	Regression?	No
Status:	Closed/Complete	Components:	Channels/chan_sip/General
Versions:	10.2.0 10.3.0	Frequency of Occurrence
Related Issues:	is a clone of ASTERISK-17405 [patch] ACK is ignored upon call-pickup with sendrpid=yes
Environment:		Attachments:	( 0) chan_sip.c.patch ( 1) debug.txt ( 2) graph.txt
Description:	Clone from [ASTERISK-17405] because error also occurs in Asterisk 10. Asterisk seems to ignore (can't match) ACK for 200+SDP message after SIP UPDATE with RPID is sent to phone. Scenario: 1 - A calls to B 2 - C dials *8 to pickup call ringing on B 3 - Asterisk sends 200+SDP to C (which is confirmed by ACK) 4 - Asterisk sends CANCEL to B (which is confirmed by 487 request terminated) 5 - Asterisk sends 200+SDP and UPDATE to A 6 - now the call is connected and RTP stream is OK in both directions 7 - A confirms UPDATE with 200 message and then confirms 200+SDP with ACK 8 - however Asterisk keep sending 200+SDP 9 - until SIP timer expires and Asterisk hangup channel without notifying A (it only sends BYE to C) Asterisk hangup channel with messages: Retransmission timeout reached on transmission callid@ip for seqno 102 (Critical Response) -- See doc/sip-retransmit.txt. Hanging up call callid@ip - no reply to our critical packet (see doc/sip-retransmit.txt). In case RPID feature is disabled (sendrpid=no) then ACK is matched properly. ****** ADDITIONAL INFORMATION ****** In the attached dump ACK is received at 2011-02-14 20:01:44.070
Comments:	By: dsf1284 (dsf1284) 2012-04-22 14:10:33.987-0500 As far as I've discovered until now, it seems to be a Cisco related problem. To speak in terms of the scenario above, if phone A is a Cisco phone (I tried with 7940, 7960 an 7970) and sendrpid is set to yes for that extension, the call drops after a few seconds. If phone A is not a Cisco phone, for example I used a Siemens Gigaset IP Phone which also requires RPID, everything is fine. Perhaps someone else could check that out too? By: ibercom (ibercom) 2012-04-23 16:31:57.730-0500 I think that I have a related problem with this. My case is with AMI and Originate, asterisk 1.8. When I originate a call from A to B, and B answers in 6 sec then the call is hangs up. I had no problem with asterisk 1.4. Regression ? I use thomson and yealink phones. By: ibercom (ibercom) 2012-04-24 03:28:13.419-0500 In case RPID feature is disabled (sendrpid=no), everything works correctly. By: Matt Jordan (mjordan) 2012-04-24 13:55:16.548-0500 If its a bug in 1.8, it will also be fixed in 10 per standard merge process.