Definitions for "Data channel"
The out of band signaling channel in a 2B + D ISDN circuit (see entry). Constitutes 16kbps of bandwidth, which is in addition to the 128kbps of B channel data possible with ISDN.
The channel through which data is transmitted in CAS mode.
See input/output channel.
A functional unit that handles data transfer between internal and peripheral equipment such as disk or tape as opposed to terminals.