Digital multiplexer system

Details Digital multiplexer system Digital multiplexer system

1974-09-03

1976-01-06

Olms, Douglas W.

179 15BS, H04J 306

Patent

active

039314731

ABSTRACT:
A second level multiplexer for a PCM data system provides for fast reframing by utilizing the stuff words in the frame organization in addition to the main framing word. This provides a clear indication of a misframe condition. In addition, integration of errors by a counter supplies immunity to medium amounts of noise. The foregoing provides for an optimum environment for frame synchronized scrambling and descrambling to be accomplished.

REFERENCES:
Note Recensioni E Notizie; Vol. XIX, No. 5, pp. 629-649; "Second Order Multiplexing of PCM Telephone Systems," by Brugia et al., Oct. 1970.
Electronics & Communications in Japan; Vol. 52A, No. 6, 1969; "On Multiplexing Systems for PCM Hierarchical Networks," by Kuroyanagi et al.

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