A telephone exchange, telephone switch, or central office is the telecommunications system in the PSTN or in big business. It interconnects digital...
The future of business communications is Voice over Internet Protocol (VoIP). A VoIP or IP phone depends on VoIP technology, rather than a...
Telecommunications is the transmission by cable, radio, optical, or other electromagnetic systems of different forms of technology. It...
The public switched telephone network (PSTN) offers public telecommunications infrastructure and services. The PSTN is the global network of...
The Internet Protocol (IP) is the primary communications protocol in the Internet protocol family for transporting datagrams across network borders....
Voice over Internet Protocol (VoIP), often known as IP telephony, is a method and set of technologies that allows voice conversations and multimedia...
