It is a call which is made over internet protocol (VoIP). For example,
one can call using Google Voice to other recipient located miles away. Such
call can also be international.
Personal SIP/IAX/POTS/SMS Gateway services for A-Z calls. Pre-paid credit. Direct SIP/IAX calls or calls via POTS gateway using analog/mobile lines + pin. Callshop solution and DIDS from all regions in Czech Republic available.