Later protocols use a single framing scheme for all messages sent by the protocol. Framing īisync differs from protocols that succeeded it in the complexity of message framing. Transcode disappeared very quickly but the EBCDIC and USASCII dialects of Bisync continued in use.Īt one time Bisync was the most widely used communications protocol and is still in limited use in 2013.
Six-bit Transcode looked backwards to older systems USASCII with 128 characters and EBCDIC with 256 characters looked forward.
The intent was that common link management rules could be used with three different character encodings for messages. It replaced the synchronous transmit-receive (STR) protocol used with second generation computers. Using packets can be helpful if your data naturally forms little 'bunches' or if different types of data must be sent over the same channel (a serial cable, for example).īinary Synchronous Communication ( BSC or Bisync) is an IBM character-oriented, half-duplex link protocol, announced in 1967 after the introduction of System/360. STX/ETX Details STX/ETX is a simple packet protocol that can be wrapped around user data for one or more of the following reasons: 1.
Binary Synchronous Communication (BSC or Bisync) is an IBM character-oriented, half-duplex link protocol, announced in 1967 after the introduction of System/360.It replaced the synchronous transmit-receive (STR) protocol used with second generation computers.
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