handshaking


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Related to handshaking: Handshaking Lemma

handshaking

[′hand‚shak·iŋ]
(communications)
The establishment of synchronization between sending and receiving equipment by means of exchange of specific character configurations.

handshaking

(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 packets of data between two systems with limited buffers. A simple handshaking 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 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).

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.

Flow control in bit-serial data transmission such as EIA-232 may use either hardware or software handshaking.

handshaking

(2)
The method used by two modems to establish contact with each other and to agreee on baud rate, error correction and compression protocols.

handshaking

(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.

handshaking

Signals transmitted back and forth over a communications network in order to establish a valid connection between two stations. A "hardware handshake" uses dedicated wires such as the request-to-send (RTS) and clear-to-send (CTS) lines in an RS-232 serial transmission. A "software handshake" sends codes such as "synchronize" (SYN) and "acknowledge" (ACK) in a TCP/IP transmission. See RTS, CTS and RS-232.
References in periodicals archive ?
A modem cable has the wires in the cable going straight through, whereas a null modem cable has the transmit and receive lines (as well as the handshaking lines) crossed in the cable.
Nevertheless, handshaking is considered polite and usually welcome.
Their lives consist of ribbon cutting, trips abroad, handshaking and blood sports.
While individual signals were often used for handshaking and signaling special events on Parallel ATA and SCSI, on the new serial busses it is the 'primitives' that perform the handshaking and event signaling.
1928: Handshaking was banned in Italy, because it was deemed unhygienic.
Other simple recommendations for use in the community, such as avoiding mass gatherings; shopping on off hours; and household and workplace strategies such as frequent hand washing, avoiding handshaking, and keeping towels separate, are often neglected in state plans.
There will be a lot of handshaking going on in trying to bring some of these people and investment to Northern Ontario.
I'm thrilled to bits, he's a lovely horse and I'm so pleased for the owners and everyone in the yard - we've had a great season," said Cox, whose palm will be blistered when he wakes up this morning after all the handshaking that went on.
Cox did have to give special thought to the job of president, making sure the leaders used proper hand-washing techniques after marathon handshaking appearances and sunscreen for outdoor events.
At the touch of a button the Tilt Image Stabilization system lets users compensate for handshaking as well as minute vibrations.