[Freeswitch-users] how to register a number using gateway

Good morning , I need to configure a test number in a distant freeSWITCH and register it from my freeswitch . i don't need to use a sip phone to register this number . the configuration is done but the registration i don't know how to do it , someone of you tell me to make a gateway but really i don't inderstand how to make it . if some of you can can help me i will be very very happy . thanks , with regards Amani