No problem people, here are all the traces. If you want I can include tcpdump with rtp.

To clarify few things, setup is like this.

PSTN <-> CISCO AS5300 (10.0.0.19) <-> FS (89.18.32.19) <-> VoipPhone (89.18.42.151)

There is no NAT between any of them.

I call from PSTN (38513391900) to Voip Phone behind FS (38514001148)

Brian West wrote: 
I can almost 100% say that sofia is sending an IP6 in the SDP to the  
Cisco.  Can you provide a sip trace for this?

/b

On Mar 13, 2008, at 9:12 AM, Josip Djuricic wrote:

  
Hi there,

I was already writing about this problem, and I still didn't managed  
to
fix it. I thought it was a NAT problem, but now without NAT the  
problem
still remains.

The error is like this, when I call from pstn, the call goes trough
Cisco AS5300, then goes to FS, then to it's final destination - Ip  
Phone.

Now you can answer the phone, but you can't hear anything on any side.
And FS returns lots of SIP 415 (unsupported media type) to Cisco  
AS5300.

When you call from Voip phone to the same pstn number it all works  
well,
so I'm starting to be confused more and more. (and in this case  
there is
no 415 messages).

I believe cisco is sending something that FS can't understand, in the
INVITE's but that's just a wild guess cause I ain't sure what can FS
exactly understand very well.

Whoever want's I can send him a tcpdump, it's about 7mb tarred, so I
can't send it to the list.

Thank you all,

Josip

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