TW238458B - Switching of balanced line-pairs in a cable management system with reduced number of crosspoint switches - Google Patents

Switching of balanced line-pairs in a cable management system with reduced number of crosspoint switches

Info

Publication number
TW238458B
TW238458B TW83103774A TW83103774A TW238458B TW 238458 B TW238458 B TW 238458B TW 83103774 A TW83103774 A TW 83103774A TW 83103774 A TW83103774 A TW 83103774A TW 238458 B TW238458 B TW 238458B
Authority
TW
Taiwan
Prior art keywords
line
service
pairs
board
lines
Prior art date
Application number
TW83103774A
Other languages
Chinese (zh)
Inventor
Henry Wise James
Original Assignee
Whitaker Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Whitaker Corp filed Critical Whitaker Corp
Application granted granted Critical
Publication of TW238458B publication Critical patent/TW238458B/en

Links

Landscapes

  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Structure Of Telephone Exchanges (AREA)

Abstract

A cable management system which provides routing of wired services between service lines (16) and user lines (18). Each service line enters the cable system at a service terminationunit circuit card (22) which also holds a portion of a crosspoint switch matrix (126). Each user line enters the system at a linetermination unit circuit card (20). The service termination unit circuit cards are all mounted to connectors (36) on a first side of a centerplane board (24) and the line termination unit circuit cards are mounted to connectors (36) on the other side of thecenterplane board. Pins (37) extending through the centerplaneboard interconnect the connectors on the opposed sides of thecenterplane board so that any service line can be connected to any user line. A system controller card (26) mounted to the centerplane board communicates with the circuit cards via a bus (38) on thecenterplane board. When the service lines and user lines are made up of balanced line-pairs (218, 224, 222, 226), in order to reduce the number of crosspoint switches (238) in the crosspoint switch matrix (228), the differential signals on the balanced line-pairs (218, 226) are converted to single-ended signals on individuallines (240). The individual lines are switched through the matrix and the signals thereon are then reconverted back to differential signals on balanced line-pairs (222, 224).
TW83103774A 1994-01-25 1994-04-27 Switching of balanced line-pairs in a cable management system with reduced number of crosspoint switches TW238458B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17343394A 1994-01-25 1994-01-25

Publications (1)

Publication Number Publication Date
TW238458B true TW238458B (en) 1995-01-11

Family

ID=51400747

Family Applications (1)

Application Number Title Priority Date Filing Date
TW83103774A TW238458B (en) 1994-01-25 1994-04-27 Switching of balanced line-pairs in a cable management system with reduced number of crosspoint switches

Country Status (1)

Country Link
TW (1) TW238458B (en)

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