Voice over Internet Protocol (VoIP) calling is most convenient when using a mobile phone. BlackBerry users have plenty of choices when it comes to picking a VoIP app that is compatible with their phones so that they can take the convenience of VoIP calling with them anywhere.
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.