[Spce-user] ngcpct='sip:127.0.0.1:5080' in Contact header

[Marc Rys]

Ok, Im not sure if this is related, but I've been having struggles with our Taqua Gateway peering to SPCE.  OUr Gateway kept replying back with a 403 Forbidden whenever SPCE tried to send a call to it.

After seeing your dialog about the contact headers, i looked at one our wireshark captures and our Invites were showing the same thing...
sip:ngcp-lb at your.ext.ip.address:5060;ngcpct='sip:127.0.0.1:5080'

I followed the instructions for the audiocodes fix and changed our dummy address to 10.10.10.1  On our Taqua Gateway I had to add the dummy IP to the IP control list.. (10.10.10.1:5080) and now the Taqua accepts calls from SPCE.

I'm not sure if this is solution for you to use with the other providers listed in the thread.

In my attached wireshark cap, it appears that SPCE is sending an ACK back from my dummy address 10.10.10.1 to my gateway.  Thats not right is it?  at this point now, my calls to our gateway dont stay up for longer than 32Seconds then the audio drops out of the call and the person on the PSTN side of the call is disconnected completely, and my SPCE UA appears to have the call up still with no audio until I end the call.



Marc Rys
http://www.tri-lakes.net
http://www.rystec.com

----- Original Message -----
From: "Skyler" <skchopperguy at gmail.com>
To: "Gary Nieboer" <gary at netdiverse.com>
Cc: spce-user at lists.sipwise.com
Sent: Wednesday, March 27, 2013 11:48:44 AM
Subject: Re: [Spce-user] ngcpct='sip:127.0.0.1:5080' in Contact header

My guess (as I've not actually had this issue) is that your contact 
would look something like:

Contact: <sip:ngcp-lb at your.ext.ip.address:5060;ngcpct='sip:127.0.0.1:5080'>

Skyler

On 3/27/2013 9:42 AM, Gary Nieboer wrote:
> I will give a couple of the items advised a try.
>
> Should there be more than one uri in the Contact field?  If so, that may
> be the quick fix.  The contact field I captured a few weeks ago only has
> one, and it is the loopback/proxy address of 127.0.0.1:5080
> <http://127.0.0.1:5080>
>
> -Gary
> --
> Gary Nieboer
>
>
> 877-763-1014 Toll Free  |  801-657-5484 Utah  |  615-800-6946 Tennessee
> | 801-694-6106 Mobile
> gary at netdiverse.com <mailto:gary at netdiverse.com>  | www.netdiverse.com
> <http://www.netdiverse.com/>
>
>
> On Wed, Mar 27, 2013 at 10:31 AM, Skyler <skchopperguy at gmail.com
> <mailto:skchopperguy at gmail.com>> wrote:
>
>     That makes sense, also might just be that the ngcpct sip uri is the
>     last uri read in the contact.
>
>       Maybe Sylvester and Gary could test this out as they have the OP.
>
>     What would a good test look like to base64-encode that ngcpct in a
>     customtt.tt2?
>
>     Skyler
>
>
>     On 3/27/2013 9:07 AM, Andreas Granig wrote:
>
>         Hi,
>
>         On 03/27/2013 04:55 PM, Skyler wrote:
>
>                I created an lo:0 with a private IP address
>             (10.10.xxx.xxx) for lb >
>             b2buas: & proxies > sip:. That may help in this case as its
>             likely the
>             127.0.0.1 which is confusing the upstream proxy.
>
>
>         I've heard of endpoints disliking the SIP uri with the quotes...
>         so one
>         option could be to convert the "ngcpct='sip:127.0.0.1:5080
>         <http://127.0.0.1:5080>'" and
>         base64-encode the "sip:127.0.0.1:5080 <http://127.0.0.1:5080>",
>         so it gets something like
>         "ngcpct=__c2lwOjEyNy4wLjAuMTo1MDgwCg==" instead.
>
>         Andreas
>
>
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