With the default setup, you can simply use sip:3210444555 and choose sip.diamondcard.us to call the real phone number +3210444555, 32 is the country code, 10444555 is the number to call. We encourage you to put your favorite phone numbers in the address book.
Konfigurazio lehenetsiarekin, erabili sip:003210444555 003210444555 telefono-zenbakira deitzeko: 00 nazioarteko kodea da, 32 estatuarena, eta 10444555 telefono-zenbakia bera.