24 Feb
2003
24 Feb
'03
1:07 a.m.
At 12:30 AM 2/24/2003, Jamin W. Collins wrote:
It's something of a catch-22. If I use a stateless
forward, the server
that it's forwarded to sees the connection as originating from the
actual phone's IP.
There is some disconnect here -- be a request forwarded by a proxy
statefuly or statelessly, it arrives always in the same shape to
the destination. In particular, proxy server's address is in IP
packet's source address and in Via.
If I use a stateful forward, the connection is seen
as coming from the SER server itself, and as a result the audio path
fails.
Audio is sent to the address advertised in SDP, which is not
manipulated by SER.
For the stateful forward to work, I believe I would
need the
phones to register their presence with the SER server, right?
Unless you wish to write scripts like
"if (uri=~"sip:joe@.." { forward("1.2.3.4") ....
you will want to keep track of users in automated manner. That's
what registration is good for. Once a user registers, messages
can be sent to him in either mode: stateless or stateful. The latter
gives some more abilities, like forking. See
http://www.iptel.org/ser/doc/seruser.html#AEN839
Is there a way to configure it so the phones are not
required to
register with the SER proxy?
You don't need to configure your server so that phones do not
regsiter with it -- that's a phone configuration issue. however,
it will not be easy to route requests to your phones if they do
not register.
-Jiri