Mobitex (Mobile text)

Low-speed, packet-switched wireless data networks deployed in Europe and

the United States alongside cellular radio networks. Developed jointly by Ericsson and Swedish Telecom, Mobitex offers runs in Europe in the 400–450 MHz band and in the United States in the 800 and 900

MHz bands, although it will run in any band. Mobitex channel spacing of 12.5 kHz supports theoretical data transmission rates of 8 kbps through Gaussian minimum-shift keying (GMSK) modulation. Mobitex packets are up to 512 octets, including overhead, using a slotted Aloha protocol. Mobitex networks support short message service (SMS), e-mail, and Internet access. See also cellular radio, channel, e-mail, GMSK, Internet, overhead, packet switch, protocol, slotted Aloha, and SMS.

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• mux or MUX (Multiplexer)
• mu (µ)
• MV (Medium Voltage)
• N
• 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)