Hi Matthew,
There 2 things when comes bridging:
1) signalling part - selecting the proper outbound interface (private or
public)
a) this can be automatically done by opensips (based on the
destination IP) if you enable the mhomed parameter in core ; this is
simple by not so efficient
b) you can do it manually, by selecting from script the correct
interface - see the force_send_socket() function
2) media part
a) rtpproxy - when enabling RTPproxy (at request and reply time)
you can explicitly select which interface to use (see the e and i flags
- http://www.opensips.org/html/docs/modules/1.5.x/nathelper.html#id271362)
Best regards,
Bogdan
Matthew S. Crocker wrote:
> Hello,
>
> I'm brand new to OpenSIPS, just going through the make process now.
>
> I need to configure OpenSIPS to act like a SBC for some SIP trunks coming
> off a VoIP switch. Where should I look for Documentation/Examples of a
> working config?
>
> Here is my scenario:
>
> OpenSIPS has two interfaces, private & public.
> VoIP Gateway is on private LAN with no gateway configured (it can only talk
> to local machines, no routing)
>
> End user has an Asterisk server on a private lan behind their firewall (NAT)
>
> I need to configure OpenSIPS to listen for SIP messages on :5060 from the end
> user firewall. It then need to rewrite the SIP message and send it to the
> Gateway. The Gateway would see the messages coming from the internal IP of
> the OpenSIPS server. Once all of the SIP messages get processed I then need
> the OpenSIPS server to proxy the RTP streams (plan on using mediaproxy)
> between the Asterisk server and VoIP Gateway.
>
> Any helpful hints on where to look?
>
> -Matt
>
>
>
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