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14 Replies Last post: Sep 23, 2009 3:31 PM by cbntech  
 
xenomuta
10 posts since
Apr 28, 2009

Apr 28, 2009 10:58 PM

OpenSBC inbound call problem


Greetings,

first of all, this is a great community. You all are changing the future of how things. A true revolution.

I have installed OpenSBC, B2BUpperReg mode, with Asterisk as upper registration box. Outbound works like charm, but I have a couple of issues:

  • No inbound calls working on Re-Invite, not even Trying or Progress
  • No audio on nated clients
  • When inbound works, funny latency, and OpenSBC terminates call 10 seconds later.

Before I stuff this thread with logs and pcaps I would like to know if there is a simple way through this,
is this a simple issue? or Is there something obvious I'm missing?

Thanks in advance.

Tags: rtp, asterisk, inbound
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Get_The_Fish
20 posts since
Apr 25, 2009
1. Apr 29, 2009 11:22 PM in response to: xenomuta
Re: OpenSBC inbound call problem
What is the contact address on the re-invite? Can you tell from the log files which side is dropping the call? This might be similar to an issue that I am having as well [http://www.opensourcesip.org:8080/clearspacex/message/9516|m-9516]. Take a look at that and see if the issue is similar.
 
xenomuta
10 posts since
Apr 28, 2009
2. Apr 30, 2009 4:48 PM in response to: Get_The_Fish
Re: OpenSBC inbound call problem
Thanks for your early answer.

I've read the link. It is not the same issue.


Here's what I see as the root of my issue...


My Setup: ATA <---> Internet <---> OpenSBC <---> AsteriskPBX <---> LAN <---> VoIP Phone


The Problem: After the INVITE, Ring and the OK, When the far end picks up the phone, my asterisk box responds with an ACK, but OpenSBC won't route it.

...

2009/04/30 20:34:59.266 DBG: [CID=0xfff02f84] Finding transaction for ACK sip:6060 at sip dot my-domain.com SIP/2.0
2009/04/30 20:34:59.267 DBG: [CID=0xfff02f84] Unable to find ACK Transaction 24c2671f57c7643b0f77163152be321e@X.X.X.Xe4dd3f063434de1180b992abdba6b9e0|z9hG4bK73c24d5f|ACK
2009/04/30 20:34:59.267 DBG: [CID=0xfff02f84] Setting Transaction ID to 24c2671f57c7643b0f77163152be321e@X.X.X.X|z9hG4bK73c24d5f|ACK
2009/04/30 20:34:59.267 DBG: [CID=0xfff02f84] Event: Setting UA Core [Call] to handle event ACK
2009/04/30 20:34:59.268 DTL: [CID=0xfff02f84] Event: ---> UnknownTransaction - ACK
2009/04/30 20:34:59.268 DBG: [CID=0xfff02f84]
2009/04/30 20:34:59.268 DBG: [CID=0xfff02f84] ACK sip:6060 at sip dot my-domain.com SIP/2.0
2009/04/30 20:34:59.268 DBG: [CID=0xfff02f84] From: "Asterisk User A" ;tag=as4f7c8a9f
2009/04/30 20:34:59.268 DBG: [CID=0xfff02f84] To: <sip:x-reg-id-sip%3A6060%40192.168.0.222%3A6050%3Bsend-addr%3D66.98.2.38%3A60185@10.10.0.217:5062;norteldevice=norteliad>;tag=e4dd3f063434de1180b992abdba6b9e0
2009/04/30 20:34:59.268 DBG: [CID=0xfff02f84] Via: SIP/2.0/UDP X.X.X.X:5060;branch=z9hG4bK73c24d5f;rport=5060;received=X.X.X.X
2009/04/30 20:34:59.268 DBG: [CID=0xfff02f84] CSeq: 102 ACK
2009/04/30 20:34:59.268 DBG: [CID=0xfff02f84] Call-ID: 24c2671f57c7643b0f77163152be321e@X.X.X.X
2009/04/30 20:34:59.268 DBG: [CID=0xfff02f84] Contact:
2009/04/30 20:34:59.268 DBG: [CID=0xfff02f84] Route:
2009/04/30 20:34:59.268 DBG: [CID=0xfff02f84] User-Agent: Asterisk PBX 1.6.0-beta9
2009/04/30 20:34:59.268 DBG: [CID=0xfff02f84] Max-Forwards: 70
2009/04/30 20:34:59.268 DBG: [CID=0xfff02f84] Content-Length: 0
2009/04/30 20:34:59.268 DBG: [CID=0xfff02f84]
2009/04/30 20:34:59.268 DBG: [CID=0xfff02f84]

...

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Get_The_Fish
20 posts since
Apr 25, 2009
3. Apr 30, 2009 5:15 PM in response to: xenomuta
Re: OpenSBC inbound call problem
Can you turn up the verbosity of the logging and give me all the sip packets between the ATA and Asterisk? Is the ATA behind a NAT firewall?
 
xenomuta
10 posts since
Apr 28, 2009
4. May 5, 2009 3:21 PM in response to: Get_The_Fish
Re: OpenSBC inbound call problem

The ATA isn't behind a NAT firewall.

Dude, the log is huge, but here it is. For security policies of my company I had to mask the public IP addresses and domain names, I hope you can still help me without theese.

Thanks again.

Attachments:
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joegen
519 posts since
Apr 28, 2007
5. May 6, 2009 10:38 PM in response to: xenomuta
Re: OpenSBC inbound call problem
Ok I know what your problem is. When asterisk sends a call towards OpenSBC, it sends the INVITE to the Main Trunk (5060). However, when OpenSBC relayed upper reg to asterisk, it sent 5062 as the port (Back-door). The solution here lies in asterisk. If asterisk is using OpenSBC for not, make sure that the extension is not configured as NATted in asterisk since OpenSBC will be traversing NAT for it. If you disable NAT in asterisk, it should eb able to send the INVITE to the correct OSBC port.
 
xenomuta
10 posts since
Apr 28, 2009
6. May 7, 2009 5:03 PM in response to: joegen
Re: OpenSBC inbound call problem

I've disabled nat on asterisk end, and tried again, :( same thing.

no results...

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Get_The_Fish
20 posts since
Apr 25, 2009
7. May 7, 2009 5:12 PM in response to: xenomuta
Re: OpenSBC inbound call problem
Xenomuta, how did you disable NAT? What process did you use? This can be a little tricky, just want to make sure....
 
xenomuta
10 posts since
Apr 28, 2009
8. May 7, 2009 8:00 PM in response to: Get_The_Fish
Re: OpenSBC inbound call problem

setting nat=no on the user definition in sip.conf ?

like this:

[2571]
type=friend
secret=*****
record_out=Adhoc
record_in=Adhoc
qualify=yes
nat=no
mailbox=2571@device
host=dynamic
dtmfmode=rfc2833
diallow=all
context=my-context
callgroup=5
allow=g729,ulaw
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Get_The_Fish
20 posts since
Apr 25, 2009
9. May 7, 2009 8:16 PM in response to: xenomuta
Re: OpenSBC inbound call problem
That too, but you also need to make sure that /etc/asterisk/sip_nat.conf is empty. These are the global SIP nat settings. Make sure that configuration file is empty as well.
 
xenomuta
10 posts since
Apr 28, 2009
10. May 7, 2009 10:32 PM in response to: Get_The_Fish
Re: OpenSBC inbound call problem

I don't use it or include it anywhere. It doesn't even exist in my configuration, so lets asume I have it empty.

?:|

 
xenomuta
10 posts since
Apr 28, 2009
11. May 8, 2009 6:25 PM in response to: joegen
Re: OpenSBC inbound call problem

Can my problem be related to this bug stated in src/SIPSessionManager.cxx ??

* Revision 1.25 2006/09/01 06:51:15 joegenbaclor
+ * Bulk Commit:+
...

* 2. There is bug in Invite Server Transaction where ACK transaction is added to the Ack Transaction Pool after sending og none 2xx final response. This new transaction is never removed from the pool after Timer_H has fired. this may result to a bad pointer if ACK is received after the timer expired since the transaction may have been deleted by then.

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joegen
519 posts since
Apr 28, 2007
12. May 9, 2009 9:22 PM in response to: xenomuta
Re: OpenSBC inbound call problem

1. No, that is not related to your problem. I've already stated what is causing this issue and that is asterisk is sedning the INVITE to port 5060 whereas OpenSBC sends 5062 as the contact when it relayed the REGISTER. In the past, a customer of ours encountered this same issue and the solution was disable NAT in asterisk if its behind OSBC.


2. Given the above, when you said you already disabled NAT in asterisk, did you bother to check where it is sending the INVITE now?

 
xenomuta
10 posts since
Apr 28, 2009
13. May 13, 2009 12:26 PM in response to: joegen
Re: OpenSBC inbound call problem

Thanks to you all, my SBC setup is now working. I managed to make asterisk talk back to SBC on backdoor ( 5062 ) port, but It wasn't until I updated the code from CVS that it actually worked. I also had to recompile it all again ( don't know why ).

I'm very grateful for your time developing this and helping people implement it B-)
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cbntech
18 posts since
Aug 13, 2009
14. Sep 23, 2009 3:31 PM in response to: xenomuta
Re: OpenSBC inbound call problem

Hi xenomuta

I know it has been a long time, was wondering if you could explain How you got asterisk to talk back to SBC on backdoor ... I have same issue as yours, changed ports on device and OSBC, disabled NAT on device ............ Even recompiled OSBC from CVS yesterday, but still no go. Outbound works like a charm, but inbound does not, not even TRYING in OSBC log ... Hopefully you can get me somewhere. Opened a new thread, but no answers so far ... :-(

Thanks for your help

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