28 Nov
2005
28 Nov
'05
12:29 p.m.
Yes, it is possible.
Christoffer Soop wrote:
Hi there!
I would like to implement the following scenario using OpenSER:
- when a SIP client sends a request consisting of only a simple phone
number (on the form +CC-AAA-NNNNNN, with or without plus sign, hyphens,
possible spaces etc where C, A and N are simple numbers) OpenSER should
route the request to another, remote SIP-proxy acting as a PSTN gateway.
If (uri =~ "\+?[0-9]@yourdomain") {
sethostport("gwip","gwport");
t_relay();
exit;
}
probably you have to adpot the regexp to fit your needs (to also mathc
white space...)
- either the same credentials should be used or
preferebly credentials
dependent on the domain name of the callee for all requests to the
SIP-proxy
if your SIP should use digest authentication to the PSTN GW you need the
UAC module.
- after the session with the remote proxy has been set
up OpenSER either
works as proxy between the client and the remote proxy, or better
transfers the session to the client
If you use record_route your proxy stays inbetween the client and the
PSTN GW. If not, your proxy stays out of the folowing conversations. But
you will loose the ability to account BYE messages, and will have
problem when doing NAT traversal.
- all requests for a client not on the form of a phone
number (i.e. with
a fully qualified domain name should be routed to the correct location
as decided by SRV-records etc.
e.g.
if (uri =~ "\+?[0-9]@yourdomain") {
sethostport("gwip","gwport");
t_relay(); /* +cc.. to GW */
exit;
} else if {
(uri =~ ".+@yourdomain") {
lookup("location");
t_relay(); /* local users */
exit;
} else if {
t_relay(); /* outbound */
exit;
}
Is this possible? Any hints on how to accomplish this?
Sincerely,
Kris
PS/Please note that I am new to OpenSER, SIP and SIP terminology...
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