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

[Skyler]

Hi,

On 3/27/2013 8:41 AM, Andreas Granig wrote:
> Hi,
>
> On 03/27/2013 04:11 PM, John Murray wrote:
>> With a peer you are typically in some sort of relationship and can
>> negotiate
>> any fixes (not always the case of course). But with a subscriber you are
>> dependent on the code in the device.
>> In my experience with PBXs ( naming no names (but NEC is terrible))
>> are very
>> bad with this header so it would be very helpful if there were some
>> switch
>> against the subscriber to remove this as a workaround.
>> Getting the vendor to do something about this has always proven very
>> difficult/painful/slow.
>
> Well, the reason this has been added was to mask the local sems contact
> of 127.0.0.1:5080, because some peers are doing far-end nat traversal
> (like the SPCE itself), and if some peer tries to fix this, the SIP flow
> is again broken.
>
> So in one way or another, this information needs to be coded into the
> message. I'm open for any better suggestions of course :)
>
> Andreas
>

  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.

Skyler