Goal (short description)

Routing of inter domain sessions over a TLS encrypted link between a SER and an OpenSER proxy 

Applicability

Inter-domain SIP routing over TLS

Prerequisites (OS, dependencies on other software)

Both proxies should have TLS enabled between itself and connected UAs. 

SER proxy: see

OpenSER proxy: see

OS specific help

In /usr/local/etc/openser/openser.cfg, add routing to the other domain:

        # check for requests targeted out of our domain
        if (!uri==myself) {
                # mark routing logic in request
                append_hf("P-hint: outbound\r\n");
                # if you have some interdomain connections via TLS
                if(uri=~"@sipx1.ces.net")

else if(uri=~"@sipx.ten.cz")

                route(1);

        };

Validation, confirmation tests

In MS Windows Messenger 5.1 choose:

Tools ->

Options ->

Accounts tab ->

enable 'my contacts include users of a SIP communications service' and fill in under 'sign-in name:' <username>@<domain>

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