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US 5,345,442 AGranted
Multi-highway system of digital exchange and digital exchange having the multi-highway system
AssigneeFujitsu Limited
InventorKazuhiro Sato
Life of this patent
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Abstract
A multi-highway system in a digital exchange includes a time division switch for exchanging time slots on N highways where N is an integer, and a plurality of card slot groups respectively including a plurality of card slots into which cards accommodating a plurality of lines are inserted. The N highways connect the time division switch and the plurality of card slot groups to each other. At least one of the card slot groups is assigned M highways out of the N highways where M is an integer satisfying 2.ltoreq.M<N.
Claims14
A multi-highway system in a digital exchange comprising:
- time division switch means for exchanging time slots on N highways where N is an integer;
- and
- a plurality of card slot groups respectively including a plurality of card slots, cards accommodating a plurality of lines being inserted into said card slots,
- said N highways connecting said time division switch means and said plurality of card slot groups to each other,
- at least one of the card slot groups being assigned M highways out of said N highways where M is an integer satisfying 2.ltoreq.M<N,
- wherein said cards respectively comprise selecting means for selecting one of the M highways to be used.
3 more elements
A digital exchange comprising:
- time division switch means for exchanging time slots on N highways where N is an integer;
- a plurality of line circuits, coupled to said time division switch means and formed on cards having a plurality of lines, for connecting a plurality of terminals and said time division switch means to each other;
- a plurality of trunk circuits, coupled to said time division switch means and formed on cards having a plurality of lines, for connecting said time division switch means and a network to each other;
- and
- a plurality of card slot groups respectively including a plurality of card slots into which said cards are accommodated,
- said N highways connecting said time division switch means and said plurality of card slot groups to each other,
- at least one of the card slot groups being assigned M highways out of said N highways where M is an integer satisfying 2.ltoreq.M<N,
- wherein said cards respectively comprise selection means for selecting one of the M highways to be used.
5 more elements
Dependencies are inferred from the claim text.