At 10:26 29/12/2007, Nolan Garrett wrote:

Hello!

I am interested in using SER to convert TCP SIP traffic from OCS to UDP SIP traffic that I can use with an external PSTN gateway provider. Has anyone successfully managed this? Basically, the configuration would look like

OCS -> Mediation Server -> SER -> External Provider

Generally TCP-2-UDP translation works. That's of course not a voucher for the chain of products to be free of troubles.

Would the Mediation Server still need an external (non-NAT'd) IP?

What is a Mediation Server?

It seems like it would, unless I use mediaproxy or RTPproxy, which would add an additional layer of complexity.

I guess I am looking for some validation that what I am trying to do will work. My next question, which I can't seem to find an answer to, is how I take the TCP SIP traffic from OCS, convert it to UDP SIP, and also authenticate with that external provider. Any ideas on how to use t_relay_to_udp with authentication?

t_relay_to_udp is the proper way to force the transport protocol of your choice.

I'm not sure what you mean by authentication though? Most PSTN-termination -deployments I'm aware of are using a rather simplistic authentication by source IP address. If you mean something like your domain having its credentials (joe@foo.com with password "secret") and a proxy server changing those into someone else's credentials (foo@bar.com with secret "pstn"), an RFC3261 proxy server cannot provide you with that by definition.

-jiri

Thank you!

Nolan _______________________________________________ Serusers mailing list Serusers@lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers

-- Jiri Kuthan http://iptel.org/~jiri/