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Modems and the Datel services
Baseband modems and line codes
7 other sections not shown
adaptive equaliser alternative amplitude Area Networks bandwidth basic binary data Binary symbol bit-rate block Cambridge Ring carrier CCITT CCITT recommendation circuits code-word coefficient communication configuration connected CSMA/CD data networks data rate data signal data terminal data throughput data transmission DATEL decoding delay detection Digital Access error correction error-detecting error-rate Ethernet frame Frame check sequence frequency Hamming code Hamming distance HDB3 HDLC impulse response input interconnection interface intersymbol interference ISDN kbits/s LAP-B layer line code line signal modem modulation monitor multiplexed multiplexor node obtain Octet Open Systems Interconnection optical fibres output packet packet-switched network parity bits parity check parity pulse passive bus polling possible primary rate access protocol received redundancy sample shift-register shown in Fig single errors slot spectrum station strategy synchronisation techniques terminal equipment ternary codes token-passing transmission facility transmission rate transmitted data twinned binary violation pulse zero