1. Predetermined hardware or software activity designed to establish or maintain two machines or programs in synchronisation. Handshaking often concerns the exchange of messages or ef="module.php?name=Lexikon&file=search&eid=1&query=packet">packets of data between two systems with limited ef="module.php?name=Lexikon&file=search&eid=1&query=buffer">buffers. A simple handshaking ef="module.php?name=Lexikon&file=search&eid=1&query=protocol">protocol might only involve the receiver sending a message meaning "I received your last message and I am ready for you to send me another one." A more complex handshaking ef="module.php?name=Lexikon&file=search&eid=1&query=protocol">protocol might allow the sender to ask the receiver if he is ready to receive or for the receiver to reply with a negative acknowledgement meaning "I did not receive your last message correctly, please resend it" (e.g. if the data was corrupted en route). ef="module.php?name=Lexikon&file=search&eid=1&query=Hardware handshaking">Hardware handshaking uses voltage levels or pulses on wires to carry the handshaking signals whereas {software handshaking} uses data units (e.g. {ASCII} characters) carried by some underlying communication medium. ef="module.php?name=Lexikon&file=search&eid=1&query=Flow control">Flow control in bit-serial data transmission such as ef="module.php?name=Lexikon&file=search&eid=1&query=eIA-232">eIA-232 may use either hardware or software handshaking. 2. The method used by two ef="module.php?name=Lexikon&file=search&eid=1&query=modem">modems to establish contact with each other and to agreee on ef="module.php?name=Lexikon&file=search&eid=1&query=baud rate">baud rate, ef="module.php?name=Lexikon&file=search&eid=1&query=error correction">error correction and ef="module.php?name=Lexikon&file=search&eid=1&query=compression">compression ef="module.php?name=Lexikon&file=search&eid=1&query=protocol">protocols. 3. The exchange of predetermined signals between agents connected by a communications channel to assure each that it is connected to the other (and not to an imposter). This may also include the use of passwords and codes by an operator. [ef="module.php?name=Lexikon&file=search&eid=1&query=Jargon File">Jargon File] (1995-01-13)

e="border-width:thin; border-color:#333333; border-style:dashed; padding:5px;" align="left">In addition suitable contents:
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