Toshiba Release 4.0 manual Primary Rate Interface Also called PRI

Plexar A Centrex service that is offered in Texas.

See also: Centrex (p. G-6)

POP3 Version 3 of the Post Office Protocol, an Internet protocol used for retrieving e-mail.

See also: Internet (p. G-15)

Predictive Dialer An automated dialing system that allows a small number of agents to process an enormous amount of outbound calls by automatically dialing numbers from a database until someone picks up. It then connects the call immediately to an available agent who will handle it.

See also: call center (p. G-4)

Primary Interexchange Carrier (PIC) Code In the U.S., a dialing prefix to

access a particular carrier, for example, 1010321.

Primary Rate Interface Also called: PRI

One of two interfaces in ISDN (the other is Basic Rate Interface). PRI is the ISDN protocol running on a T1 line. Also known as 23B+D, PRI consists of 23 bearer B-channels at 1.544mbps and one data D-channel at 2.048mbps. The B-channels are used for voice, video conferencing, fax, and so forth. The D-channel carries control and signaling information about incoming and outgoing calls.

See also: Integrated Services Digital Network (ISDN) (p. G-15)

Private Branch Exchange Also called: PABX, PBX

A privately owned version of the phone company’s central switching office that processes and directs phone calls. A PBX is located on the premises of a telephone company customer.

See also: PC PBX (p. G-19)

Private Carrier Private company that provides telecommunications circuits and services. A private carrier is not regulated and can refuse to provide service.

See also: common carrier (p. G-8)

PTT Post Telegraph and Telephone administration that provides telephone and telecommunications service in most countries (except the United States). PTTs are usually controlled by the government.

Public Switched Telephone Network Also called: PSTN

The world wide phone network, including all carriers, switches, CO’s, and local and long-distance lines.

See also: central office (CO) (p. G-6), common carrier (p. G-8), switch (p. G-24)

GLOSS-20 STRATA CS ADMINISTRATOR MANUAL

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