Communications: electrical – Continuously variable indicating – With meter reading
Patent
1990-12-28
1993-02-23
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
34082579, 370 601, 370 942, 370 583, 3701051, 359117, H04Q 1100, H04J 300
Patent
active
051894106
ABSTRACT:
A digital cross connect system includes reception interface parts for converting an input line signal into a VT signal having a VT frame format in conformance with synchronous optical network (SONET) standards, a switching part for cross connecting the VT signal received from the reception interface parts, and transmission interface parts for converting the cross connected VT signal received from the switching parts into a line signal. The reception interface part inserts a frame synchronizing signal within a reserved path overhead part of the VT signal, and the transmission interface part achieves frame synchronization of the VT signal in response to the frame synchronizing signal.
REFERENCES:
patent: 4964095 (1990-10-01), Tyrell et al.
patent: 4967405 (1990-10-01), Upp et al.
patent: 4998242 (1991-03-01), Upp
patent: 5001708 (1991-03-01), Williams et al.
patent: 5033044 (1991-07-01), Williams et al.
Aoki Makoto
Furukawa Takahiro
Hashimoto Yuichi
Kosugi Toru
Ohara Katsuichi
Fujitsu Limited
Yusko Donald J.
Zimmerman Brian
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