Registrar: The registrar to which you want to register. This is usually an IP address or an host name that will be given to you by your Internet Telephony Service Provider, or by your administrator if you are trying to register to a SIP IPBX.
Erregistroa: erregistratu nahi duzun erregistroa. IP helbide edo ostalari-izen bat izaten da normalean, Internet Telefoniaren Zerbitzu Hornitzaileak emandakoa, edo zure administratzaileak emandakoa, SIP IPBX batean erregistratzen saiatzen ari bazara.