Registering on a SIP server

You can suscribe for services on remote SIP servers. These services can be:

The registrar you've registered on can also be used as an outbound proxy. This is usefull when using linphone behind a firewall. The outbound proxy takes the same role as a http proxy in private subnets. All outcoming calls from linphone will be addressed to the proxy, that will be in charge to redirect the call to person which is supposed to be in the external network.

To use a registrar server with linphone, go to the property box, section SIP, and then toggle the button “use registrar”. Give the address of the registrar in the appropriate field, and then choose the type of services you request from this registrar: redirect or proxy, by toggling the corresponding buttons. You can also toggle the “Use registrar as an outbound proxy” if you need the registrar server to proxy your calls to an external network.

Finnaly click the OK button of the property box. Linphone will close it and immediately talk to the registrar server to inform it of your exact location. When linphone shutdowns, it will take a few seconds to unregister your location from the registrar.

A list of public registrar servers can be found at http://www.cs.columbia.edu/~hgs/sip/servers.html.

Unfortunately, many of these servers don't work anymore, maybe caused by the recent crisis in telecommunications. Some other require authentification methods that are currently not supported by linphone.

In order for you not to lost your time, a list of working public sip servers usable with linphone is availlable on the old linphone 's web site at http://simon.morlat.free.fr/english/servers.html.