The Service called IP Telephony or Hosted PBX service. The Hosted PBX Service is a all in one Business Communication solution based on IP Telephony.

Business VoIP software allows users to make calls over the internet- enabled devices.

VoIP is a technology that delivers voice over the Internet. It is also called IP Telephony, Internet Telephony, and Internet Calling.

Cellular Mobile Phone Operator- Broadband Wireless Access (BWA) – Internet Service Provider (lSP) – PSTN – IPTSP – Call Center – Vehicle Tracking Service (VTS)