TheComputerMaster

A Protocol is a set of rules / instructions

1. Transmission Rate (Flow Control)

Hardware – RTS ¦ CTS
-> Tx (Transmitter) needs to send data so sends a RTS (Request) signal to Rx (Receiver)
-> When Rx is not busy it sends CTS signal to Tx
-> Tx sends packets of data, followed by another RTS signal to Rx

Software – XON ¦ XOFF
-> Tx starts sending data
-> When Rx’s buffer is full the Rx sends an XOFF signal to Tx
-> Tx receives XOFF signal it stops sending
-> When Rx buffer is empty, Rx sends XON signal to Tx
-> Tx starts again

2. Transmission Type (Serial, Parallel, Simplex, Half Duplex, Full Duplex)

Simplex -> One way
Half Duplex -> Two Way, not at them same time
Full Duplex -> Two Way, at the same time

3. Transmission Flow (Asynchronous, Synchronous)

Asynchronous -> Used when data is transmitted at a regular intervals without synchronizing the transmitter with the receiver
Synchronous -> Used between two devices that are continuously sending data to each other in a synchronized fashion, in timed intervals.

4. Error control and compression techniques

-> Parity Check
-> BCC
-> CRC

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This entry was posted on Wednesday, November 19th, 2008 at 16:23 pm and is filed under Networking. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.