6. Registering on a SIP server

Registering on a SIP server can be usefull in two main cases:

In order to setup the correct registrar (a registrar is a proxy or redirect server) configuration, you have to indicate the registrar url in the SIP section of linphone's property box. Do not modify the field “address of record” unless you exactly know what you are doing. If the registrar has to be used as an outbound proxy (if you are behind a firewall for example), then toggle the “use it as an outbound proxy line”.

Finnaly click the OK button of the property box. Linphone's property box will close and immediately a message will be sent to the registrar 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.