(PRI) A type of ISDN connection. In North America and Japan, this consists of 24 channels, usually divided into 23 B channels and 1 D channel, and runs over the same physical interface as T1. Elsewhere the PRI has 31 user channels, usually divided into 30 B channels and 1 D channel and is based on the E1 interface. PRI is typically used for connections such as one between a PBX (private branch exchange, a telephone exchange operated by the customer of a telephone company) and a CO (central office, of the telephone company) or IXC (inter exchange carrier, a long distance telephone company). (1995-01-18)

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[ 2 ] [ = ] [ al ] [ am ] [ an ] [ ar ] [ arc ] [ as ] [ at ] [ B ] [ b ] [ ba ] [ base ] [ be ] [ br ] [ branch ] [ by ] [ C ] [ ca ] [ central office ] [ ch ] [ channel ] [ co ] [ com ] [ con ] [ connect ] [ cons ] [ cu ] [ D ] [ de ] [ du ] [ E ] [ E1 ] [ ec ] [ ed ] [ ee ] [ er ] [ era ] [ et ] [ fi ] [ file ] [ fo ] [ for ] [ ge ] [ h ] [ hang ] [ hr ] [ id ] [ ie ] [ il ] [ in ] [ int ] [ interface ] [ io ] [ IS ] [ is ] [ ISDN ] [ IXC ] [ J ] [ Lex ] [ ls ] [ ly ] [ mo ] [ mod ] [ module ] [ mp ] [ N ] [ na ] [ nc ] [ ne ] [ ng ] [ nn ] [ ns ] [ O ] [ om ] [ op ] [ pa ] [ PBX ] [ pe ] [ ph ] [ physical ] [ PR ] [ pr ] [ PRI ] [ query ] [ rc ] [ re ] [ ru ] [ run ] [ S ] [ sa ] [ sam ] [ SD ] [ se ] [ si ] [ st ] [ su ] [ T ] [ T1 ] [ th ] [ to ] [ tr ] [ tw ] [ type ] [ ua ] [ us ] [ user ] [ va ] [ ve ] [ vi ] [ X ] [ XC ]