asterisk users - Jun 2006 - Provisional problem with SIP channel

Hi,

I'm using the Perl AGI interface for a prepaid card platform. And 
sometimes (almost twice an hour), asterisk doesn't detect a call has 
been hung up. The call is so hung up when the time limit for the call is 
reached (the corresponding prepaid card is then emptied ...).

I've tried to look in the asterisk log files to find anything suspect 
with these calls, and I've found a debug message which looks to be my 
problem :
chan_sip.c: (Provisional) Stopping retransmission (but retaining packet)
Each time I've got that, the call is not normally hung up.

Hopefully that's not a bug in asterisk !

Is there anyone who could help me ?

It's hard to extract logs as it's hard to identify these few calls 
(that's not a constant problem). Here are some logs I've extracted :
Jun 20 15:59:07 DEBUG[25077] chan_sip.c: = Found Their Call ID: 
565bd370360864a1064e763c1e38112e@193.111.80.221 Their Tag Our tag: 
as03ec066e
Jun 20 15:59:07 DEBUG[25077] chan_sip.c: (Provisional) Stopping 
retransmission (but retaining packet) on 
'565bd370360864a1064e763c1e38112e@193.111.80.221' Request 102: Found
Jun 20 15:59:07 DEBUG[25077] chan_sip.c: SIP response 100 to standard invite
...
Jun 20 15:59:11 DEBUG[25077] chan_sip.c: = Found Their Call ID: 
2411b3957fdca465667d37b027679a63@193.111.80.221 Their Tag Our tag: 
as3eafcd68
Jun 20 15:59:11 DEBUG[25077] chan_sip.c: (Provisional) Stopping 
retransmission (but retaining packet) on 
'2411b3957fdca465667d37b027679a63@193.111.80.221' Request 102: Found
Jun 20 15:59:11 DEBUG[25077] chan_sip.c: SIP response 100 to standard invite
Jun 20 15:59:17 DEBUG[25077] chan_sip.c: = Found Their Call ID: 
2411b3957fdca465667d37b027679a63@193.111.80.221 Their Tag Our tag: 
as3eafcd68
Jun 20 15:59:17 DEBUG[25077] chan_sip.c: (Provisional) Stopping 
retransmission (but retaining packet) on 
'2411b3957fdca465667d37b027679a63@193.111.80.221' Request 102: Found
Jun 20 15:59:17 DEBUG[25077] chan_sip.c: SIP response 183 to standard invite
...
Jun 20 15:59:19 DEBUG[25077] chan_sip.c: = Found Their Call ID: 
2411b3957fdca465667d37b027679a63@193.111.80.221 Their Tag 169705f8 Our 
tag: as3eafcd68
Jun 20 15:59:19 DEBUG[25077] chan_sip.c: Acked pending invite 102
Jun 20 15:59:19 DEBUG[25077] chan_sip.c: Stopping retransmission on 
'2411b3957fdca465667d37b027679a63@193.111.80.221' of Request 102: Match 
Found
Jun 20 15:59:19 DEBUG[25077] chan_sip.c: SIP response 200 to standard invite
Jun 20 15:59:19 DEBUG[25077] chan_sip.c: build_route: Contact hop: 
sip:00244923636493@84.207.21.80;transport=UDP
...
Jun 20 15:59:22 DEBUG[25077] chan_sip.c: = No match Their Call ID: 
2411b3957fdca465667d37b027679a63@193.111.80.221 Their Tag 169705f8 Our 
tag: as3eafcd68
Jun 20 15:59:22 DEBUG[25077] chan_sip.c: = Found Their Call ID: 
565bd370360864a1064e763c1e38112e@193.111.80.221 Their Tag Our tag: 
as03ec066e
Jun 20 15:59:22 DEBUG[25077] chan_sip.c: Stopping retransmission on 
'565bd370360864a1064e763c1e38112e@193.111.80.221' of Request 102: Match 
Found
Jun 20 15:59:22 DEBUG[25077] chan_sip.c: = No match Their Call ID: 
2411b3957fdca465667d37b027679a63@193.111.80.221 Their Tag 169705f8 Our 
tag: as3eafcd68
Jun 20 15:59:22 DEBUG[25077] chan_sip.c: = Found Their Call ID: 
565bd370360864a1064e763c1e38112e@193.111.80.221 Their Tag Our tag: 
as03ec066e
Jun 20 15:59:22 DEBUG[25077] chan_sip.c: Stopping retransmission on 
'565bd370360864a1064e763c1e38112e@193.111.80.221' of Request 102: Match 
Not Found
Jun 20 15:59:22 DEBUG[25077] chan_sip.c: Updating call counter for 
outgoing call

Thanks,
Benoit


-- 
Benoit Merouze
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