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Re: [sipx-users] SIP trunk between Cisco Callmanager 6 and SIPXECS

Doesn’t ring a bell to me but I’ve never setup a connection to CCM…  I’m going to push this back to the list because I think there are a couple guys there who can help.

 

From: arda savran [mailto:ardasavran@xxxxxxxxxxx]
Sent: Friday, July 03, 2009 4:53 PM
To: Picher, Michael
Subject: RE: [sipx-users] SIP trunk between Cisco Callmanager 6 and SIPXECS

 

 

 Two things happening in my case:
 
1) if I configure the dial peer on SIPXECS to point to CUCM for "no prefix + 4 digit" (match suffix) and call X-lite from IP Communicator then I get "483 too many hops". When I capture the packets going back and forth I notice a few 100 trying packets and then 483 too many hops packets.
Another interesting thing with this case is this. I call 7050 (X-lite) from 6010 (IP Communicator). CUCM6 sends a request to SIPXECS for 7050@xxxxxxxxxxxx. The next message is from 192.168.1.70 (SIPXECS) and it is a 100 TRYING message. The interesting part is the following. SIPXECS sends a " Request: INVITE sip:7050@xxxxxxxxxxxx " back to CUCM6..This doesnt make any sense because 7050 is not on 192.168.1.80 (CUCM6). It is registered to SIPXECS. So there is some sort of loopback. This goes like this back and forth and the system starts to give 483 too many hops messages.
 
2) if I configure the dial peer on SIPXECS to point to CUCM for "6 prefix + 3 digit" (match all dialed digits) and call X-lite (ext.7050) from IP Communicator (ext.6010) then I get a 404 not found message from the SIPXECS server regarding extension 7050.....This also does not make any sense.
 
By the way, in both cases I am able to make calls from X-lite to IP Communicator. The calls originated to the reverse directions are messed up...I wonder if it is a CUCM problem or a SIPXECS configuration problem ?!?!!?

Does any of this ring a bell?
 
Thanks


Subject: RE: [sipx-users] SIP trunk between Cisco Callmanager 6 and SIPXECS
Date: Fri, 3 Jul 2009 05:03:29 -0400
From: mpicher@xxxxxxxxxxxxxxxx
To: ardasavran@xxxxxxxxxxx

Looks pretty good.  Do you have an alias set with the IP address of the system in sipX?

 

Your sipX system is expecting calls to 7010@xxxxxxx and not 7010@xxxxxxxxxxxx.

 

From: arda savran [mailto:ardasavran@xxxxxxxxxxx]
Sent: Friday, July 03, 2009 12:26 AM
To: Picher, Michael
Subject: RE: [sipx-users] SIP trunk between Cisco Callmanager 6 and SIPXECS

 

I ended up building a new test network just to troubleshoot this problem and I run into a new issue.
What I did was I took a 4 port switch and connected CUCM6 (192.168.1.80), sipxecs (192.168.1.70) and 2 laptops to it. Everything is in the same 192.168.1.X network.
 
Both CUCM and sipxecs are built from scratch. One laptop has Cisco IP communicator and registered to CUCM6 with 6010 extension.
 
The other laptop has X-lite softphone and registered to SIPX with 7010 extension.
 
CUCM6 is configured with domain name lab1.com. SIPX is configured with lab.com.
 
 
CallManager is configured with a SIP trunk and a dial pattern pointing to the SIP trunk for the following dial peer: 7XXX
 
I attached the dial peer configuration along with other screenshots to this email.
 
I also attached the wireshark capture. The first few messages show a good call made from X-lite to Cisco IP Communicator. The last 4 lines are for a call made from IP Communicator to X-lite; and that is the one that does not make any sense.
 
I hope this makes any sense because I am starting to give up on this :(
 
Thanks


 

 




 

Subject: RE: [sipx-users] SIP trunk between Cisco Callmanager 6 and SIPXECS
Date: Thu, 2 Jul 2009 16:02:29 -0400
From: mpicher@xxxxxxxxxxxxxxxx
To: ardasavran@xxxxxxxxxxx

I can’t open that with wireshark for some reason.

 

From: arda savran [mailto:ardasavran@xxxxxxxxxxx]
Sent: Thursday, July 02, 2009 9:43 AM
To: Picher, Michael
Subject: RE: [sipx-users] SIP trunk between Cisco Callmanager 6 and SIPXECS

 

Thanks Mike,
 
I hope you dont mind but I attached the wireshark capture. There is only 4 messages exchanged.You can use wordpad to open the file. After that I get a fast busy on the Cisco side.
 
Again, sipX-to-Cisco calls work but the other way does not work.
 
I could not see any domain names mentioned in the attached capture. Everything is configured based on IP on Callmanager and SIPx and the packet exchange shows that only IP addresses are used. However, SIPX server keeps sending this realm and nonce value within that 407 message and I think callmanager doesnt like that...
 
I thought it was related to the permissions so what I did is I unchecked all the permission levels for my dial peer, but this time when I call sipx from callmanager, sipx startd to send back "483 too many hops" messages. I was not sure if that was a one step forward or a complete different problem so I left my custom dial peer in "local" permission again.
 
It has been more than a day I am working on this issue and I really need some help here..thanks again 

 




 

Subject: RE: [sipx-users] SIP trunk between Cisco Callmanager 6 and SIPXECS
Date: Thu, 2 Jul 2009 04:37:51 -0400
From: mpicher@xxxxxxxxxxxxxxxx
To: ardasavran@xxxxxxxxxxx; sipx-users@xxxxxxxxxxxxxxxxxxx

You may want to try and capture some of that traffic with wireshark/ethereal to see how it is coming to your system from Call Manager.

 

If the traffic is coming from the IP address of the CM server, use the IP address in your gateway definition on the sipXecs side.  If the traffic is coming from a SIP domain, you should use the SIP domain in the gateway definition and make sure that your sipXecs server has the proper DNS records to resolve the domain name.

 

Mike

 

From: sipx-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:sipx-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of arda savran
Sent: Wednesday, July 01, 2009 1:03 PM
To: sipx-users@xxxxxxxxxxxxxxxxxxx
Subject: [sipx-users] SIP trunk between Cisco Callmanager 6 and SIPXECS

 

I built a SIP trunk between a CUCM6 and SIPXECS server in our lab.
Everything in CUCM6 regarding SIP trunk is set to non-secure standard.
I can make phone calls from the phones registered to the sipxecs server to the phones registered to CUCM6 server.
However, when I try the the other way around, the sipxecs server sends a 407 Proxy authentication required message back to CUCM6 and the call fails. I only hear a fast busy signal on the phone which is registered to CUCM6.
 
On sipxecs, I set up the trunk as unmanaged gateway.
 
Any ideas on how to disable this 407 proxy authentication? Or any ideas on how to configure CUCM to respond those requests from sipxecs properly?
 
Thanks

 

 

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