I'm not a mediaproxy/rtpproxy expert but as far as your users are still registered with OpenSER it should work.
Can someone confirm that?

2006/4/4, Jeff Williams < jeffw@globaldial.com>:
Simon Morvan wrote:

> It seems that what you want is third party registration. I'm pretty
> sure you can tell OpenSER to register your users on your other SIP
> server by diverting the 'REGISTER' request.

But does the mediaproxy/rtpproxy work if the REGISTER request is
diverted to a third party?

Jeff