[OpenSIPS-Users] Media Proxy between LAN and WAN

[Mauro Davi']

Hi All,

 

I have a Media Proxy installed in our VoIP platform. The Media Proxy
machine have 2 Network card, one on a Private LAN the other on a WAN.

Now I configured the Media-Relay with the IP address 0.0.0.0 to listen
to all the interfaces.

 

On opensips when then INVITE came from a UA directed to an internal
network element (like PSTN Gateway or IVR) I want to manipulate the
connection information in the SDP message content with the private IP
address.

 

On the 200 OK I want to manipulate the connection information in the SDP
message content with the public IP address.

 

In this way I hope that the Media Relay can work correctly...

 

But I have a problem, when I use the fix_nated_sdp (after the
use_media_proxy function) on the INVITE sent to the Gateway I obtain the
following SDP result:

 

 

v=0

o=- 0 2 IN IP4 192.168.193.54

s=CounterPath Bria

c=IN IP4 0.0.0.0172.30.0.205

t=0 0

m=audio 30058 RTP/AVP 0 101

a=sendrecv

a=rtpmap:101 telephone-event/8000

a=fmtp:101 0-15

a=x-rtp-session-id:EC003DF02E154A31AE923BD612B55FE7

a=direction:active

a=oldmediaip:192.168.193.54

 

the private IP address 172.30.0.205 is prefixed by the 0.0.0.0 inserted
I think by the mediaproxy module.

 

There is a way to solve this problem?

 

Any suggestion?

 

Thanks in Advance

            MD

 

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