6 Terms
Home > Industry/Domain > Network hardware > Modems
Modems
Modems are devices that modulate an analog carrier signal to encode digital information.
Industry: Network hardware
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Modems
Automatic repeat request (ARQ)
Network hardware; Modems
A function that allows your modem to detect flawed data and request that it be retransmitted. See MNP and V.42.
Asynchronous transmission
Network hardware; Modems
Data transmission in which the length of time between transmitted characters may vary. Because characters may not be transmitted at set intervals, start/stop bits are used to mark the beginning and ...
Auto answer
Network hardware; Modems
Sets the modem to pick up the phone line when it detects a certain number of rings.
Auto-dial
Network hardware; Modems
A process where your modem dials a call for you. The dialling process is initiated by sending an ATDT (dial tone) or ATDP (dial pulse) command followed by the telephone number. Auto-dial is used to ...
B-channel
Network hardware; Modems
A B-channel, or "bearer" channel, carries up to 64,000 bits per second in both directions.
Baud rate
Network hardware; Modems
A term used to measure the speed of an analogue transmission from one point to another. Although not technically accurate, baud rate is commonly used to mean bit rate.
Binary digit
Network hardware; Modems
A 0 or 1, reflecting the use of the binary numbering system. Used because the computer recognises either of two states, OFF or ON. Shortened form of binary digit is bit.
