dictionary of multimedia and internet applications: a guide for developers and users. francis botto

Print ISBN 0-471-98624-0 Online ISBN 0-470-84178-8

T1 An AT&T designation for a digital link with a bandwidth of 1.544 Mbps.

(See ATM, Frame relay and ISDN.)

T2 An AT&T designation for a digital link with a bandwidth of 6.312 Mbps.

(See ATM, Frame relay and ISDN.)

T3 An AT&T designation for a digital link with a bandwidth of 44.736 Mbps.

T50 An ITU-T designation for ASCII.

T90 An ITU-T designation for image coding, which is used by Group 4 facsimile. This uses an ISDN 64 Kbps bearer channel.

(See ASCII.)

Tactile feedback A method of addressing the tactile senses of an inter-

faced user in a computer or virtual environment. The interfacing device can generally be assumed to be lycra-based clothing such as a body suit, partial suit, or even gloves fitted with inflatable bladders usually at strategic points.

Taos (‘Dowse’) An operating system for parallel systems. Taos’s most

unusual feature is that it incorporates an instruction set for a virtual processor. Code written for it may therefore be run using a number of different processor architectures.

(See MPP, Occam and Parallel programming.)

Tape streamer A magnetic tape storage device used to back up hard disk

data as a contingency measure against data loss or data corruption resulting from system failure or an interruption of the power supply. Data recovery

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