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The Telephone Network as a Medium
Character Terminal Networks
Simple Messagebased Techniques
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access protocol acknowledgement allocation amplitude ARPA network bandwidth binary bit pattern broadcast buffer byte CCITT channel number chapter character framing check bits computer communications computer interface computer networks data bits data block data packet data rate data signal data transfer datagram delay destination detect devices efficiency equipment error burst exchange flow control frequency range full duplex gateway Hamming code Hamming distance header host-to-host implemented information frames mechanism medium mini-packet MODEM modulation multipoint lines needed node noise operation packet switched network phase polling message problem PSTN remote job entry remote multiplexer response retransmission routing table satellite sender and receiver sending sent sequence number shown in figure slot slow channel speed channel square wave standard station synchronisation techniques telephone terminal network throughput traffic transmission transmitted UART virtual call voltage wide area networks window wire X25 level