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3 Articles

Theory

Telephone exchange

roosho.

3.2K Views

21 Min Read

A telephone exchange, telephone switch, or central office is the telecommunications system in the PSTN or in big business. It interconnects digital...

Telecommunication

roosho.

1.7K Views

27 Min Read

Telecommunications is the transmission by cable, radio, optical, or other electromagnetic systems of different forms of technology. It...

Voice over IP or VoIP

roosho.

2.4K Views

23 Min Read

Voice over Internet Protocol (VoIP), often known as IP telephony, is a method and set of technologies that allows voice conversations and multimedia...