[Spce-user] Interoperability problem with audiocodes cpe devices

[Vladimir Grujic]

Changing the iaddress to some internal solved the issue with my mp252. I
will contact the audiocodes directly (i have a business arrangement with
them) to fix this issue in their sip stack.

Vladimir


On Tue, Jun 19, 2012 at 12:42 PM, Thilo Bangert <thilo.bangert at gmail.com>wrote:

> On Tuesday, June 19, 2012 12:21:46 PM Andrew Pogrebennyk wrote:
> > On 06/19/2012 11:57 AM, Andrew Pogrebennyk wrote:
> > > Vladimir,
> > >
> > > we've had a problem like this before when mp202 was replacing 127.0.0.1
> > > address in Record-Route headers (added by spce internal components)
> with
> > > its own IP address. Could you run 'ngrep-sip b' and send us the trace
> to
> > > know if that is the case? You can send it to me privately to not
> > > disclose any IP addresses.
> >
> > A follow-up from discussion in private: this is indeed a known bug in
> > Audiocodes.  SPCE is routing calls via a SIP loadbalancer, a SIP proxy
> > and an SBC internally, and we have two record routes via 127.0.0.1 which
> > are wrongly rewritten by the MP252 to its public IP address. An ACK
> > message then can't reach the UAS. In case somebody wonders there is
> > workaround to setup dummy network interface and change iaddress to that.
>
> hhm, do you know more specifics of which audiocodes are affected? we have a
> couple hundred MP-124D in different hardware revisions and firmware
> versions
> as well as a few MP-118 that we like to hook up to spce/sppro....
>
> i guess we better implement the workaround from the start. care to share
> the
> details? on the wiki perhaps ;-)
>
> thanks
>
> kind regards
> Thilo
>
>
> >
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