Plain Old Telephone Service (POTS)
A term sometimes used in discussion of new telephone technologies in which the question of whether and how existing voice transmission for ordinary phone communication can be accommodated. For example, ASDL and ISDN connections provide some part of their channels for “plain old telephone service” while providing most of their bandwidth for digital data transmission.
On the Internet, a point-of-presence (POP) is an access point from one place to the rest of the Internet.
Information provided by a phone system to let users know if their contacts are available and via what method (by phone, e-mail, IM, and so forth).
Presence technology is a type of application that makes it possible to locate and identify a computing device wherever it might be, as soon as the user connects to the network. IM is a common example.
Private Branch Exchange Digital or analog telephone switchboard located on the customer premises and used to connect private and public telephone networks.
All the tasks necessary to provide a user or an organization with telecommunications service; may be automated, so as to function with no assistance from a person.
(public switched telephone network)
The world’s collection of interconnected voice-oriented public telephone networks, both commercial and government-owned. It’s also referred to as the Plain Old Telephone Service (POTS). It’s the aggregation of circuit-switching telephone networks that has evolved from the days of Alexander Graham Bell (“Doctor Watson, come here!”). Today, it is almost entirely digital in technology except for the final link from the central (local) telephone office to the user.