2 Jan
2008
2 Jan
'08
11:58 p.m.
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(a)foo.com with password "secret") and a proxy server
changing those into someone else's credentials (foo(a)bar.com with secret
"pstn"), an RFC3261 proxy server cannot provide you with that by definition.
-jiri
Thank you!
Nolan
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Jiri Kuthan http://iptel.org/~jiri/