Telephone / Data system
Telephone and data systems refer to the networks and infrastructure used to transmit voice and data communications. These systems are essential for modern communication, supporting everything from traditional phone calls to high-speed internet access. Below is an overview of the key components and concepts associated with telephone and data systems:
Telephone Systems
- Public Switched Telephone Network (PSTN): The traditional circuit-switched network that provides landline telephone service. It includes various switching centers, transmission lines, and end-user devices.
- Voice over Internet Protocol (VoIP): A technology that allows voice calls to be made over the internet instead of traditional telephone lines. VoIP converts voice signals into digital data packets.
- Private Branch Exchange (PBX): A private telephone network used within an organization. A PBX allows internal and external communication and often includes features like voicemail, call forwarding, and conference calling.
- Integrated Services Digital Network (ISDN): A set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the PSTN.
- Session Initiation Protocol (SIP): A signaling protocol used for initiating, maintaining, and terminating real-time communication sessions that include voice, video, and messaging applications.
