Primary Rate Interface. An ISDN service providing users with 23 64 kbps bearer (or B) channels for message information and 1 64 kbps data (or D) channel for signaling and control over an existing telephone line.
Primary Rate Interface. One of two levels of ISDN service. In North America, PRI typically provides 23 bearer channels for voice and data and one channel for signaling information (commonly expressed as 23B+D). In Europe, PRI typically provides 30 bearer lines (30B+D). See Basic Rate Interface and Integrated Services Digital Network.
An Integrated Services Digital Network (ISDN) interface that connects private branch exchanges (PBXs) to the network at the North American 1.544 megabits per second (Mbps) T1 rate. It is electrically identical to the ISDN Basic Rate Interface (BRI). North American standards for this interface specify 23 64-kilobit-per-second (Kbps) B, or bearer, channels, plus one 64-Kbps D, or delta, channel. Thus, it is also referred to as 23B+D. In Europe, where it is known as Primary Rate Access (PRA), standards call for 30B+D. See PBX, ISDN and T1.
Primary Rate ISDN. PRI is a 4-wire 1.544 megabits per second (DS1) local switching system port that uses the B8ZS line code and the ESF framing format. PRI is available in a twenty-three B channel plus one D channel (23B + D) configuration or a twenty-four B channel (24B) configuration.
Primary Rate Interface. An access interface used by businesses with large data needs or with the need to set up their own local phone system. It provides a fast connection to the telephone company. In North America and Japan, the most common PRI has 23 64 Kbps B channels and one 64 Kbps D channel (23B+D). In Europe, the most common PRI is 30 64 Kbps B channels, and one 64 Kbps D channel (30B+D).
ISDN interface to primary rate access. Primary rate access consists of a single 64-Kbps D channel plus 23 (T1) or 30 (E1) B channels for voice or data. Compare with BRI (Basic Rate Interface), ISDN interface composed of two B channels and one D channel for circuit-switched communication of voice, video, and data.
Primary Rate Interface. An ISDN circuit that has E1 or T1 capacity. E1 rate, used in Europe, is given by 30 B channels and 1 D channel. T1 rate, used in North America and Japan, is given by 23 B channels and 1 D channel. Also see E1, T1, ISDN, B channel, and D channel. Compare with BRI.
(Primary Rate Interface) Primary rate interface (PRI) is the wholesale version of ISDN service. PRI delivers 23 64-Kbps B channels and 1 64-Kbps D channel. PRI service is referred to as 23B+D. As you might guess, this digital communications power comes with a price tag that is out of reach for most. This bandwidth power is comparable to a T1 line. Companies installing multiple ISDN lines use PRI as a kind of wholesale delivery of B channels, which are then divided at the premises. Internet service providers and large organizations use PRI service for handling incoming BRI connections.[See Also: BRI, ISDN
Primary rate ISDN. is a high-bandwidth form of ISDN. A PRI circuit has 23 B-channels and a 64,000-bit D-channel for signaling (1,536,000 bits per second) in the United States, and 30 B-channels in Europe and Asia.
The ISDN Primary Rate Interface, or PRI, in the U.S. provides 23 B channels and one 64 Kbps D channel (23B+D), equivalent to T1. In Europe, PRI includes 30 B channels and one D channel, which is equivalent to European E1.
(Primary Rate Interface): A larger aggregate than a BRI, a PRI will consist of 24 channels (T1) or 31 channel's (E1). In either case one channel is reserved for call signaling. For T1s, the D-channel is the 24th channel while the E1s use the 16th channel for signaling.
Primary Rate Interface. In ISDN, the specification for the interface at each end of the high volume trunks linking PBX and central office facilities or connecting network switches to each other. The primary rate consists of 23 B or "bearer" channels (operating at 64 kilobits per second) and a D or "data" channel (also functioning at 64 kbps). The combined signal carrying capacity is 1.544 megabits per second -- equivalent to that of a type T1 channel.
An ISDN interface consisting of 23 B-channels, operating at 64Kbps each, and one 64Kbps D-channel. Companies installing multiple ISDN lines often use PRI to provide sufficient bandwidth for their network(s). PRI service is referred to as 23B+D.
Primary Rate Interface An ISDN subscriber line, consisting of twenty-three 64 kbps B channels in North America (thirty 64 kbps channels elsewhere) and one 64 kbps D channel, used for signaling purposes.
Primary Rate Interface. An industrial grade ISDN line. In the United States and Japan, a PRI consists of 23 64K bearer channels and a 64K delta (controller) channel. In Europe, a PRI consits of 30 bearer channels and a delta channel.
Primary Rate Interface. This term is always used in connection with ISDN, as in â€œISDN PRIâ€. It refers to a digital circuit, such as a T1 or E1, that carries multiple calls and uses the ISDN signaling protocol.
Primary Rate Interface is the combined signal-carrying capacity of 23 B-Channels (Bearer Channels) operating at 64 kbps and one D-Channel (Data Channel) also functioning at 64 kbps. The total capacity is equal to that of 1 DS-1 circuit.
(Primary Rate Interface). A PRI line is one of two access methods to ISDN; BRI is the other. In North America PRI consists of twenty-three 64 Kbps B channels and one 64 Kbps D channel (known as 23B+D). The European PRI consists of 30 Kbps B channels and one 64 Kbps D channel (known as 30B+D). Also see B Channel BRI D Channel Kbps ISDN
Primary Rate Interface. An ISDN PRI is an industrial-strength ISDN telephone connection commonly used to service multiple dial-up data connections, large central switchboard â€œPBXâ€ systems, and other highly-specialized needs. Each ISDN PRI has twenty-three 56 or 64Kbps B Channels and one 64Kbps D Channel.
Primary Rate Interface. One of two levels of ISDN service. In North America, the PRI typically provides 23 bearer channels for voice and data and one channel for signaling information (commonly expressed as 23B+D). In Europe and most countries other than North America, PRI typically provides 30 bearer lines (30B+D).
a digital line that provides 23 application channels and 1 signaling channel. The 23 application channels can be shared for voice, data and video applications – depending on the installation. Commonly used is to replace multiple individual phone lines in a business for a streamlined cost.
rimary ate nterface; a term used to describe a trunk configuration consisting of 23 B channels and one D channel running at 1.544 Mbyte/s (or 30 B channels and one D channel at 2.048 Mbyte/s in Europe). It is an ISDN interface equivalent to a T1 circuit. Also known as primary rate. See also ISDN.
PRI means primary rate interface and is the used when a single or multiple BRI are not sufficient in bandwidth. In Europe, a PRI includes 30 B-channels for data communication, and 1 D-channel for administration of the data communication.
Primary Rate Interface. A four-wire ISDN line (or “trunk”) with the same capacity as a T1, 1.544 Mbps. PRIs contain 23 64 Kbps B-channels and one 64 Kbps D-channel. The D-channel carries call-control signaling for all the B-channels.
Primary Rate Interface - This is an Integrated Services Digital Network (ISDN) interface typically used by larger customers. This interface consists of a single 64 Kbps Data (or "D") channel plus 23 or 30 Bearer (or "B") channels for voice and/or data.
Primary rate interface or primary rate ISDN (Integrated Services Digital Network). In North America, PRI consists of 23 B channels and 1 D channel for a combined capacity of 1.544 Mb/s. In Europe, 30 B channels and 1 D channel provide a combined capacity of 2.048 Mb/s. See also BRI, ISDN.
Programme Related Investments (PRI) are a type of social investment that can be made by charities. They are charitable objectives and a financial return - although the financial return may be at a lower rate than an investment made with only a financial return as its aim. When making programme-related investments, the usual rules (as set out in the 2000 Trustee Act) obliging trustees to make the highest possible financial return do not apply. For example, a large operating charity may choose to lend money to a smaller charity with similar charitable purposes: the larger charity accepts that it could have made more financially if it invested in the commercial markets, but it is giving up part of the financial return to boost its social return.
Program Related Investment. An investment by a foundation NOT in the form of an outright grant that serves to accomplish a charitable objective. Once an investment is determined to be program-related, it is considered a qualifying distribution and counts toward satisfying the foundation's 5% payout requirement.
(Public Radio International)—A noncommercial radio network, founded in 1983, based in Minneapolis, Minnesota, that develops, funds, acquires, and distributes programming used by public radio stations nationwide.
Pulse Recurrence Interval. The time interval between the start of a transmitted pulse and the start of the next transmitted pulse. PRI is the reciprocal of the pulse-recurrence frequency. Same as Pulse Recurrence Time.
Party of the Institutionalized Revolution; dominant political party in Mexico; developed during the 1920s and 1930s; incorporated labor, peasant, military, and middle-class sectors; controlled other political organizations in Mexico. (p. 937)
personalized retirement interview A telephone and Web-based counseling and intake program for a member applying for a retirement annuity. Upon completion, TRS generates all necessary forms, completes all available information on the forms, and mails the forms to the member for signature.