PRI

PRI: see Institutional Revolutionary party.

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Institutional Revolutionary Party (PRI)

Political party that dominated Mexico's political life for most of the time since its founding in 1929. It was established as a result of a shift of power from political-military chieftains to state party units following the Mexican Revolution (1910–20). Until the late 1990s, nomination to public office by the PRI virtually guaranteed election, but in 1997 Mexico City elected its first non-PRI mayor. At the national level, the president, as leader of the party, typically selected the party's next presidential candidate—thus effectively choosing his own successor. Pres. Ernesto Zedillo broke from that tradition in 1999, and the following year opposition candidate Vicente Fox won the presidency, although the PRI maintained control of several state governments.

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PRI

(Primary Rate Interface) An ISDN service that provides 23 64 Kbps B (Bearer) channels and one 64 Kbps D (Data) channel (23B+D), which is equivalent to the 24 channels of a T1 line. The advantage of the D channel is that it sends control signals that can dynamically allocate any number of B channels for different applications. For example, one channel can be used for voice, while another can be used for data, while six more can be used for a videoconferencing channel and so on. PRI lines typically use four wire pairs. PRI lines are often designated as PRI/T1 or T1/PRI lines, but they are dial-up PRI lines, not T1 lines, which are point-to-point. See ISDN.

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PRI - ISDN Primary Rate Interface. See also BRI