P1024B

A Unisys protocol used in airline reservations systems such as American Airlines’ SABRE Sys-

tem and United Airlines’ APOLLO. Both P1024B and Airline Link Control (ALC), the IBM version, employ a non-standard six-bit coding scheme. See also coding scheme and protocol.

• nailed-up circuit
• NAK (Negative AcKnowledgement)
• .name
• N-AMPS (Narrowband Advanced Mobile Phone Service)
• NANC (North American Numbering Council)
• nanometer (nm)
• nano- (n)
• NANP (North American Numbering Plan)
• NA (Numerical Aperture)
• NAP (Network Access Point)
• NAP (Network Access Point)
• narrowband
• Narrowband AMPS (N-AMPS)
• Narrowband ISDN (N-ISDN)
• Narrowband PCS (Narrowband Personal Communications Services or N-PCS)
• Narrowband TACS (NTACS)
• Narrowband Total Access Communications System (NTACS)
• narrowcast
• NAS
• NA-TDMA (North American Time Division Multiple Access)
• National Bureau of Standards (NBS)
• National Do-Not-Call Registry
• National Electrical Code (NEC)
• National Exchange Carrier Association (NECA)
• National Information Infrastructure (NII)