D-4


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D-4

(1) (D4) A framing format for T1 transmission that places 12 T1 frames into a superframe. See ESF.

(2) (Digital-4) There was never a D-4 videotape format because the Japanese believe 4 is unlucky. The pronunciation of the number sounds like the word for "death."
References in periodicals archive ?
Tenders are invited for Swarna Brahmaputra D-32,D-3, D-34, D-35, D-36, Swarna Godavari D-1, D-2, D-3, D-4, D-5 Swarna Krishna D-5, D-6, D-7, D-8, D-9 Swarna Kaveri D-2, D-3, D-4, D-5, D-6