Settings>Sip configuration>Line 1 Settings\nName = extension\nShortname = extension\nAuthentication Name = extension\nAuthentication Password = Password set on server\nDisplay name = extension\nProxy Address = IP of voice server(FQDN did not work for me for some reason)\nProxy Port = default of 5060\nSettings>Sip configuration\nMake sure the register expires setting is set to 600. I've had problems where I could not receive incoming calls because this was set at the default of 3600.\n