WO1995001665A1 - Rear cross connect dsx system - Google Patents

Rear cross connect dsx system Download PDF

Info

Publication number
WO1995001665A1
WO1995001665A1 PCT/US1994/002912 US9402912W WO9501665A1 WO 1995001665 A1 WO1995001665 A1 WO 1995001665A1 US 9402912 W US9402912 W US 9402912W WO 9501665 A1 WO9501665 A1 WO 9501665A1
Authority
WO
WIPO (PCT)
Prior art keywords
jack
mount
circuit board
disposed
spring
Prior art date
Application number
PCT/US1994/002912
Other languages
French (fr)
Inventor
Todd Allen Morgenstern
James D. Dewey
Original Assignee
Adc Telecommunications, Inc.
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 Adc Telecommunications, Inc. filed Critical Adc Telecommunications, Inc.
Priority to DE69410269T priority Critical patent/DE69410269T2/en
Priority to EP94912250A priority patent/EP0706723B1/en
Priority to CA002166308A priority patent/CA2166308C/en
Priority to AU64479/94A priority patent/AU674218B2/en
Publication of WO1995001665A1 publication Critical patent/WO1995001665A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/58—Contacts spaced along longitudinal axis of engagement
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/02—Constructional details
    • H04Q1/14—Distribution frames
    • H04Q1/142—Terminal blocks for distribution frames
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
    • H01R13/7031—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity
    • H01R13/7033—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity making use of elastic extensions of the terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles

Definitions

  • a digital cross-connect system provides a location for interconnecting two digital transmission paths.
  • the apparatus for a DSX is located in one or more frames, or bays, usually in a telephone central office.
  • the DSX apparatus also provides jack access to the transmission paths
  • DSX jacks are well-known and include a plurality of spring contacts for receiving tip and ring plugs.
  • the jacks are commonly ganged in a common housing which is mounted on the frame.
  • the jacks are typically hard wired to wire termination pins which are mounted on a side of the housing opposite plug access openings.
  • the DSX of the prior art provided for improved operator access, and capabilities to provide for significant electronics. More specifically, commonly assigned U.S. Patent No. 4,840,568 provided that the hard wired DSX signals are connected to a mount, within which the jack is inserted.
  • the jack has a plurality of electrical contacts which can access these signals.
  • the cross connect signals are hard wired to the opposite side of the jack itself. Having the cross connect signals hard wired to the jack makes removal of the jack contingent upon disconnecting the hard wired cross connect signals from the jack.
  • the present invention provides for a jack and mount arrangement in which this problem is solved.
  • an apparatus for providing access to a plurality of telecommunication lines.
  • the apparatus includes a mount which includes a plurality of electric contacts hard wired to a source of DSX signals, and cross connect signals.
  • a plurality of jacks are provided to be releasably attached to the mount points.
  • Each jack includes a plurality of electric contact points designed to engage the electric contacts of the mount to receive the DSX signals and cross connector signals when the jack is inserted in the mount.
  • Figure 1A is a cut-away side elevation view of a jack.
  • Figure IB is an opposite side view of the jack of Fig. 1A.
  • Figure 2 is a perspective view of a jack.
  • Figure 3 is a front elevation view of a mount.
  • Figure 4 is a perspective view of a mount.
  • the jack 10 includes a dielectric body 14 and a printed circuit board 18.
  • the jack 10 extends from a leading edge 54 of body 14 to a trailing edge 56 of circuit board 18.
  • An upper edge 58 of body 14 is provided with an axially extending rail 60.
  • a lower edge 62 of body 14 is provided with a lower rail 64 , similar in structure to that of rail 60.
  • the upper and lower rails, 60 and 64 are designed to releasably secure the jack 10 within a mount 20 in the same fashion as that disclosed in commonly assigned U.S. patent 4,840,568.
  • the mount 20 will be described in detail later.
  • leading edge 54 of jack 10 is provided with a plurality of holes or ports extending therethrough.
  • the plurality of ports include a monitor (or MON) port 82, an OUT port 84, and an IN port 86. These ports provide access for jack plugs (not shown) to be inserted into the jack 10. When inserted the jack plugs (not shown) access electric circuitry, through a plurality of spring contacts shown in Fig. 1A.
  • the plurality of spring contacts includes an OUT tip normal spring 90 and an OUT tip spring 91.
  • the plurality also includes an OUT ring normal spring 92 and an OUT ring spring 93, an IN tip normal spring 94 and an IN tip spring 95.
  • the plurality also includes an IN ring normal spring 96 and an IN spring 97, a monitor tip spring 98, and a monitor spring 99, a first LED spring 100 and a second LED spring 101.
  • Springs 91 and 93 are disposed to be engaged by the tip and ring, respectively, of an electrical jack plug, not shown, inserted within the OUT port 84.
  • the circuit board 18 of jack 10 includes a first side 110 and a second side 111.
  • the size of the circuit board is defined by the upper and lower rails 60, 64 of the jack 10 for board 18 to stay within an area bounded by the rails 60, 64.
  • the circuit board 18 is of standard construction.
  • the trailing edge 56 of the circuit board 18 has a plurality of electric contact points 140-145 and 150-155 disposed on the first and second sides of the circuit board 18 proximate to the trailing edge 56.
  • the electrical contact points 140-145 are evenly spaced on the first side 110 of the circuit board 18.
  • the electrical contact points 150-155 are evenly spaced in an alternate arrangement (i.e., staggered with respect to contact points 140-145) on the second side 111 of circuit board 18, as best illustrated by the position of contacts 220- 231 shown in Figure 3. This alternate spacing provides that no electric contact point on the first side 110 of circuit board 18 is immediately adjacent to an electric contact point on the second side 111 of the circuit board 18.
  • Each electric contact point receives a independent signal when connected within the mount. Because an additional amount of electric contact points can be disposed on the circuit board, the signals received include the IN cross connect signal and the OUT cross connect signal.
  • the electric contact points 140-145,150-155 alternately disposed on the first and second sides, 110,111 of the circuit board are electrically connected to a plurality of circuit paths (not shown) connecting each contact point with individual ones of the spring contacts.
  • the electric contact points 140-145,150-155 are designed to connect to electric contacts disposed in the mount 20 as will be described.
  • the mount 20 of the present invention is of the same general configuration as that described in commonly assigned U.S. Patent No. 4,840,568.
  • the mount 20 of the invention includes a plurality of slots 160-163 arranged in parallel, spaced apart columnar format aligned generally to receive the circuit boards 18 of jacks 10 as they are inserted into the mount 20.
  • a plurality of bores 200-211 are located in the slots. These bores 200-211 are arranged in such a fashion as to form two parallel lines, and each bore is spaced in an alternate position from the bore opposite it as best seen in Figure 3. As seen in Figure 4, within each bore is disposed an electric contact 220-231.
  • each electric contact has an associated wire wrap termination pin 240 and a spring contact 241.
  • the wire wrap termination pin 240 extends away from the slots 160-163 and jack 10, while the spring contact 241 is ordinarily disposed in the slot.
  • Each spring contact 241 of each electric contact 220-231 extends beyond half the distance across any slot.
  • the arrangement of the bores 200-211 provides for an arrangement of electric contacts 220-231 where no individual spring contact is in electrical communication with any other spring contact in the mount.
  • a plurality of mounts can be placed in an equipment rack.
  • Spring contacts 241 are defor able, ie pushed back upon insertion of jack 10 into mount 20.
  • spring contacts 241 can extend beyond the halfway point of any of slots 160-165. By staggering the spring contact they can extend beyond the halfway across the slot allowing the spring contact to develop sufficient contact force on circuit board 18 of jack 10. If contact points 140-145 and 150-155 were not staggered, the spring contacts would touch. By staggering the contact points, the spring contacts will not form closed circuits. In certain applications, the spring contacts may not necessarily extend beyond the halfway point across a slot.
  • Attached to the wire wrap termination pins of each electric contact associated with any given slot are seven wires (not shown) carrying common DSX signals.
  • These DSX signals include: a tip in; a tip out; a ring in; a ring out; a sleeve ground, a LED ground, and an energized source. These are well known in the art, and described in commonly assigned U.S. Patent No. 4,840,568.
  • the IN and OUT cross connect signals are also received from the electric contacts in the mount. The remaining contacts in the mount correspond to signals which can be used for other well known signal enhancement functions.
  • the circuitry connected to the contact points on the circuit board include resistors and other circuit elements to provide well known DSX functions.
  • the DSX circuitry of the present invention is similar to that shown in commonly assigned U.S. Patent No. 4,840,568.
  • the cross connect circuitry of the present invention is accessible from the electric contact points disposed on the circuit board. When the jack is inserted into the mount the electric contact points located on the circuit board come in contact with the electric contacts disposed in the associated slot on the mount.
  • staggering or alternating the contacts is a greater density of wires in an equipment rack. By providing this benefit, more applications become available. Additionally staggering the contact points allows the spring contacts to extend over half way across any of the slots of the mount so that when the jack is inserted into the mount sufficient contact force may be generated.

Abstract

A jack assembly is disclosed including a jack having a means for releasable attachment to a mount. The jack further includes a body with means for connection to jack plugs and a circuit board having a plurality of contact points disposed on the first and second sides of the circuit board. Also included is a mount having a plurality of exposed contact members arranged in a predetermined array so that when the jack is inserted into the mount each electric contact point is in electrical communication with a discrete member of the contact members on the mount.

Description

REAR CROSS CONNECT DSX SYSTEM
BACKGROUND OF THE INVENTION
A digital cross-connect system (DSX) provides a location for interconnecting two digital transmission paths. The apparatus for a DSX is located in one or more frames, or bays, usually in a telephone central office. The DSX apparatus also provides jack access to the transmission paths
DSX jacks are well-known and include a plurality of spring contacts for receiving tip and ring plugs. The jacks are commonly ganged in a common housing which is mounted on the frame. The jacks are typically hard wired to wire termination pins which are mounted on a side of the housing opposite plug access openings. The DSX of the prior art provided for improved operator access, and capabilities to provide for significant electronics. More specifically, commonly assigned U.S. Patent No. 4,840,568 provided that the hard wired DSX signals are connected to a mount, within which the jack is inserted. The jack has a plurality of electrical contacts which can access these signals. However, the cross connect signals are hard wired to the opposite side of the jack itself. Having the cross connect signals hard wired to the jack makes removal of the jack contingent upon disconnecting the hard wired cross connect signals from the jack. The present invention provides for a jack and mount arrangement in which this problem is solved. SUMMARY OF THE INVENTION
According to a preferred embodiment of the present invention an apparatus is disclosed for providing access to a plurality of telecommunication lines. The apparatus includes a mount which includes a plurality of electric contacts hard wired to a source of DSX signals, and cross connect signals. A plurality of jacks are provided to be releasably attached to the mount points. Each jack includes a plurality of electric contact points designed to engage the electric contacts of the mount to receive the DSX signals and cross connector signals when the jack is inserted in the mount.
BRIEF DESCRIPTION OF THE DRAWINGS Figure 1A is a cut-away side elevation view of a jack.
Figure IB is an opposite side view of the jack of Fig. 1A.
Figure 2 is a perspective view of a jack. Figure 3 is a front elevation view of a mount. Figure 4 is a perspective view of a mount.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the several figures in which identical elements are numbered identically throughout, a description of the preferred embodiment of the present invention will now be provided.
With initial reference to Figure 1A, there is generally shown a jack 10. The jack 10 includes a dielectric body 14 and a printed circuit board 18. The jack 10 extends from a leading edge 54 of body 14 to a trailing edge 56 of circuit board 18. An upper edge 58 of body 14 is provided with an axially extending rail 60. A lower edge 62 of body 14 is provided with a lower rail 64 , similar in structure to that of rail 60.
The upper and lower rails, 60 and 64, are designed to releasably secure the jack 10 within a mount 20 in the same fashion as that disclosed in commonly assigned U.S. patent 4,840,568. The mount 20 will be described in detail later.
As seen in Figure 2, leading edge 54 of jack 10 is provided with a plurality of holes or ports extending therethrough. The plurality of ports include a monitor (or MON) port 82, an OUT port 84, and an IN port 86. These ports provide access for jack plugs (not shown) to be inserted into the jack 10. When inserted the jack plugs (not shown) access electric circuitry, through a plurality of spring contacts shown in Fig. 1A.
The spring contacts are located within the body 14 of the jack 10. As best seen in Figure 1A, the plurality of spring contacts includes an OUT tip normal spring 90 and an OUT tip spring 91. The plurality also includes an OUT ring normal spring 92 and an OUT ring spring 93, an IN tip normal spring 94 and an IN tip spring 95. The plurality also includes an IN ring normal spring 96 and an IN spring 97, a monitor tip spring 98, and a monitor spring 99, a first LED spring 100 and a second LED spring 101. Springs 91 and 93 are disposed to be engaged by the tip and ring, respectively, of an electrical jack plug, not shown, inserted within the OUT port 84. Springs 95, 97 are selected to be engaged by the tip and ring of a plug, not shown, inserted within the IN port 86. Similarly springs 98, 99 are disposed to be engaged by the tip and ring of a plug, not shown, inserted within the MON port 82. Spring pairs 90-91, 92-93, 94-95, and 96-97 are in normal contact in the absence of a plug within either ports 84 and 86, and will be opened by insertion of a plug, not shown. Springs 98, 99 are connected across a resistance to springs 91 and 93. The arrangement of these contacts in the body of the jack 10 is similar as that described in commonly assigned U.S. patent No. 4,840,568.
As seen in Figures 1A and IB, the circuit board 18 of jack 10 includes a first side 110 and a second side 111. The size of the circuit board is defined by the upper and lower rails 60, 64 of the jack 10 for board 18 to stay within an area bounded by the rails 60, 64. The circuit board 18 is of standard construction. The trailing edge 56 of the circuit board 18 has a plurality of electric contact points 140-145 and 150-155 disposed on the first and second sides of the circuit board 18 proximate to the trailing edge 56. The electrical contact points 140-145 are evenly spaced on the first side 110 of the circuit board 18. The electrical contact points 150-155 are evenly spaced in an alternate arrangement (i.e., staggered with respect to contact points 140-145) on the second side 111 of circuit board 18, as best illustrated by the position of contacts 220- 231 shown in Figure 3. This alternate spacing provides that no electric contact point on the first side 110 of circuit board 18 is immediately adjacent to an electric contact point on the second side 111 of the circuit board 18. Each electric contact point receives a independent signal when connected within the mount. Because an additional amount of electric contact points can be disposed on the circuit board, the signals received include the IN cross connect signal and the OUT cross connect signal.
The electric contact points 140-145,150-155 alternately disposed on the first and second sides, 110,111 of the circuit board are electrically connected to a plurality of circuit paths (not shown) connecting each contact point with individual ones of the spring contacts. The electric contact points 140-145,150-155 are designed to connect to electric contacts disposed in the mount 20 as will be described.
Referring to Figures 3 and 4, the mount 20 of the present invention is of the same general configuration as that described in commonly assigned U.S. Patent No. 4,840,568. In addition to containing means to releasably secure the jack 10 within the mount 20 the mount 20 of the invention includes a plurality of slots 160-163 arranged in parallel, spaced apart columnar format aligned generally to receive the circuit boards 18 of jacks 10 as they are inserted into the mount 20. A plurality of bores 200-211 are located in the slots. These bores 200-211 are arranged in such a fashion as to form two parallel lines, and each bore is spaced in an alternate position from the bore opposite it as best seen in Figure 3. As seen in Figure 4, within each bore is disposed an electric contact 220-231. As seen in Figure 4, each electric contact has an associated wire wrap termination pin 240 and a spring contact 241. The wire wrap termination pin 240 extends away from the slots 160-163 and jack 10, while the spring contact 241 is ordinarily disposed in the slot. Each spring contact 241 of each electric contact 220-231 extends beyond half the distance across any slot. The arrangement of the bores 200-211 provides for an arrangement of electric contacts 220-231 where no individual spring contact is in electrical communication with any other spring contact in the mount. A plurality of mounts can be placed in an equipment rack.
Spring contacts 241 are defor able, ie pushed back upon insertion of jack 10 into mount 20. In the preferred embodiment, spring contacts 241 can extend beyond the halfway point of any of slots 160-165. By staggering the spring contact they can extend beyond the halfway across the slot allowing the spring contact to develop sufficient contact force on circuit board 18 of jack 10. If contact points 140-145 and 150-155 were not staggered, the spring contacts would touch. By staggering the contact points, the spring contacts will not form closed circuits. In certain applications, the spring contacts may not necessarily extend beyond the halfway point across a slot.
Attached to the wire wrap termination pins of each electric contact associated with any given slot are seven wires (not shown) carrying common DSX signals. These DSX signals include: a tip in; a tip out; a ring in; a ring out; a sleeve ground, a LED ground, and an energized source. These are well known in the art, and described in commonly assigned U.S. Patent No. 4,840,568. The IN and OUT cross connect signals are also received from the electric contacts in the mount. The remaining contacts in the mount correspond to signals which can be used for other well known signal enhancement functions.
The circuitry connected to the contact points on the circuit board include resistors and other circuit elements to provide well known DSX functions. The DSX circuitry of the present invention is similar to that shown in commonly assigned U.S. Patent No. 4,840,568. The cross connect circuitry of the present invention is accessible from the electric contact points disposed on the circuit board. When the jack is inserted into the mount the electric contact points located on the circuit board come in contact with the electric contacts disposed in the associated slot on the mount.
Benefits of maintaining all of the wire wrap terminations pins on the mount, behind the jack, are that the jack may be removed from the mount without disconnecting the hard wired cross connect signals from the jack, as would be necessary in the jack of commonly assigned U.S. Patent 4,840,568. Also by maintaining all of the wires on the mount keep the entire system more orderly.
Further benefits of staggering or alternating the contacts is a greater density of wires in an equipment rack. By providing this benefit, more applications become available. Additionally staggering the contact points allows the spring contacts to extend over half way across any of the slots of the mount so that when the jack is inserted into the mount sufficient contact force may be generated.
While the foregoing detailed description of the present invention describes the invention in a preferred embodiment, it will be appreciated that it is the intent of the invention to include all modifications and equivalent designs. Accordingly, the scope of the present invention is intended to be limited only by the claims which are appended hereto.

Claims

WE CLAIM;
1. A jack assembly comprising: a) a jack comprising: i) a means for releasable attachment to a mount; ii) a circuit board having a first side and a second side; iii) a body having means for connection to jack plugs, said means for releasable attachment being disposed on said body, and said circuit board being disposed adjacent to said body; and iv) a plurality of electric contact points disposed on said first and said second side of said circuit board in an alternate pattern. b) said mount having a plurality of exposed contact members disposed in a predetermined array, so that when said jack is inserted into said mount, each of said contact points is in electrical communication with a discrete contact member of said contact members on said mount.
2. A jack assembly as in claim 1, wherein each of said exposed contact members of said mount are sprung, and in electrical communication with a wire termination member.
3. A jack assembly comprising: a jack having means for releasable attachment to a mount, and a circuit board, said circuit board having a first side and a second side; a plurality of electric contact points disposed on said first side and said second side of said circuit board such that each electric contact points disposed on said first side does not have one of said electric contact points disposed on said second side immediately adjacent said electric contact on said first side; said mount having a plurality of exposed contact members, each of said contact members positioned to come in contact with a discrete member of said plurality of electrical contacts when said jack is inserted into said mount.
PCT/US1994/002912 1993-06-30 1994-03-17 Rear cross connect dsx system WO1995001665A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE69410269T DE69410269T2 (en) 1993-06-30 1994-03-17 REAR DSX CONNECTION SYSTEM
EP94912250A EP0706723B1 (en) 1993-06-30 1994-03-17 Rear cross connect dsx system
CA002166308A CA2166308C (en) 1993-06-30 1994-03-17 Rear cross connect dsx system
AU64479/94A AU674218B2 (en) 1993-06-30 1994-03-17 Rear cross connect DSX system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/085,343 US5393249A (en) 1993-06-30 1993-06-30 Rear cross connect DSX system
US08/085,343 1993-06-30

Publications (1)

Publication Number Publication Date
WO1995001665A1 true WO1995001665A1 (en) 1995-01-12

Family

ID=22190978

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/002912 WO1995001665A1 (en) 1993-06-30 1994-03-17 Rear cross connect dsx system

Country Status (9)

Country Link
US (1) US5393249A (en)
EP (1) EP0706723B1 (en)
AT (1) ATE166185T1 (en)
AU (1) AU674218B2 (en)
CA (1) CA2166308C (en)
DE (1) DE69410269T2 (en)
ES (1) ES2115943T3 (en)
SG (1) SG52488A1 (en)
WO (1) WO1995001665A1 (en)

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AU6447994A (en) 1995-01-24
EP0706723B1 (en) 1998-05-13
ATE166185T1 (en) 1998-05-15
DE69410269D1 (en) 1998-06-18
CA2166308C (en) 2004-04-06
AU674218B2 (en) 1996-12-12
ES2115943T3 (en) 1998-07-01
US5393249A (en) 1995-02-28
EP0706723A1 (en) 1996-04-17
SG52488A1 (en) 1998-09-28
DE69410269T2 (en) 1998-09-03
CA2166308A1 (en) 1995-01-12

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