Distribution device in a subscriber connection area

Abstract
The invention relates to a distribution device in the subscriber access area, comprising two changeover devices two switching matrices a DSLAM having associated splitter modules and at least one controller. The first changeover device includes m inputs, m first outputs and m second outputs, with a first and a second output having one associated changeover element by means of which an associated input can be selectively connected to the first or to the second output. The second changeover device includes m first inputs, m second inputs and m outputs, with a first input and a second input having one associated changeover element by means of which an associated output can be selectively connected to the first or to the second input. The controller switches the first and second changeover devices and switching matrices.
Description

The invention relates to a distribution device in the subscriber access area, in particular in cable junction boxes, splice boxes or terminal boxes.


Distribution devices in the subscriber access area are physically located between a switching center and the subscriber. Typical installation sites are cable junction boxes, splice boxes or terminal boxes.


Broadband data transmission via telephone lines has become increasingly important. The system providers therefore face the technical problem of how to provide these broadband services to an increasing number of subscribers in a flexible manner. Approaches to a solution for this are known in which a DSLAM and its associated splitters are integrated in the distribution device in the subscriber access area, with the jumpering which is then necessary being performed manually. However, this is very time-consuming since some of the individual distribution devices are scattered far and wide.


The invention is therefore based on the technical problem of providing a distribution device in the subscriber access area which improves the availability of broadband data services.


To this end, the distribution device in the subscriber access area comprises two changeover devices, two switching matrices, a DSLAM having associated splitter modules, and at least one controller, in which the first changeover device comprises m inputs, m first outputs and m second outputs, with a first and a second output having one associated changeover element by means of which an associated input can be selectively connected to the first or to the second output, the second changeover device comprises m first inputs, m second inputs and m outputs, with a first input and a second input having one associated changeover element by means of which an associated output can be selectively connected to the first or to the second input, the first switching matrix has m inputs and n outputs, and the second switching matrix has n inputs and m outputs, where n<m, the inputs of the first changeover device can be connected to a switching center, the first outputs of the first changeover device are connected to the first inputs of the second changeover device, and the second outputs of the first changeover device are connected to the inputs of the first switching matrix, the second inputs of the second changeover device are connected to the outputs of the second switching matrix, and the outputs of the second changeover device can be connected to subscriber lines, the splitter modules have POTS connections, data connections and POTS/data connections, with the outputs of the first switching matrix being connected to the POTS connections, the data connections being connected to the DSLAM, and the POTS/data connections being connected to the inputs of the second switching matrix, and the controller switches the first and second changeover devices and switching matrices. It should be noted here that the inputs of the first changeover device do not have to be connected directly to the switching center, and the outputs of the second changeover device do not have to be connected directly to the subscribers. It should also be noted that the flow of information is bidirectional. The terms input and output have therefore been chosen for a flow of information from the switching center to the subscriber for simplicity.


The advantage of the invention is that a broadband data service is automatically allocated to a subscriber by switching over the changeover devices or switching matrices. In the basic state, the two changeover devices are switched in such a way here that the signals from the first output of the first changeover device to the first input of the second changeover device are switched-through to the output of the second changeover device. If a subscriber then wants a broadband data service, such as VDSL, the associated input of the subscriber is connected to the second output in the first changeover device. The second input of the second changeover device is accordingly connected to the associated output. Furthermore, an as yet unused XDSL channel is selected and is connected to the associated input of the first switching matrix or to the associated output of the second switching matrix via the two switching matrices. This is possible because each input of the switching matrix can be connected to each output of the switching matrix by means of the switching matrix. A broadband data service can thus be automatically allocated to a subscriber by remote control without manual jumpering. The percentage of possible allocations is defined here by the n/m ratio of the switching matrices, although these may be replaced as required. Overall, this produces a very simple system which can be easily modularly upgraded. One further advantage is that the basic services can also be jumpered by means of the distribution device. For this purpose, an input, which is associated with a subscriber, of the first changeover device is connected to the second output of the first changeover device, associated with a free output of the switching matrix by means of the first switching matrix, and fed into the second switching matrix by means of the splitter. Any second input and thus also output of the second changeover device can then be selected by means of the second switching matrix.


In one preferred embodiment, the controller is a constituent part of the DSLAM. This DSLAM already has controllers which can then be used simultaneously to control the switching matrices and changeover devices.


In one further embodiment, the changeover elements of the changeover device are in the form of relays. These relays have the advantage of being very reliable and having good transmission characteristics. However, microelectronic or micromechanical switches are also feasible in principle.


In one further preferred embodiment, the relays are in the form of bistable or monostable changeover switches. The advantage of the monostable embodiment is that the POTS signals can continue to be switched if the electrical power supply for the distribution device fails. In contrast, the advantage of the bistable embodiment is that the configurations, that is to say the allocation of the broadband services to the subscribers, are maintained.


The invention is explained in greater detail in the text which follows with reference to a preferred exemplary embodiment. The single FIGURE shows a schematic block diagram of a distribution device in the subscriber access area.







The distribution device 1 in the subscriber access area comprises two changeover devices 2, 3, two switching matrices 4, 5, a DSLAM 6 and a number of splitter modules 7. The first changeover device 2 comprises m inputs 8, m first outputs 9 and m second outputs 10. The inputs 8 of the first changeover device 2 are connected to wires or cables from or to a switching center (not illustrated). For this purpose, the inputs 8 are preferably in the form of multipole plug connectors. The first outputs 9 are connected to first inputs 11 of the second changeover device 3. The second outputs 10 are connected to inputs 12 of the first switching matrix 4, with the first switching matrix 4 likewise having m inputs 12. The first changeover device 2 comprises m changeover elements 13 by means of which an input 8 can be selectively connected to its associated first output 9 or second output 10. In this case, the changeover elements 13 are preferably in the form of bistable changeover relays. The changeover elements 13 are switched here by a control signal S which is generated by a controller 14 of the DSLAM 6. The n outputs 15 of the first switching matrix 4 are connected to n splitter modules 7, with only one splitter module 7 being illustrated, for reasons of clarity. In this case, the splitter modules 7 are preferably arranged together in groups on a printed equipment card. The outputs 15 are connected to the POTS connections 16 of the splitter modules 7, while the data connections 17 of the splitter modules 7 are connected to the DSLAM 6. The POTS/data connections 18 of the splitter modules 7 are connected to the n inputs 19 of the second switching matrix 5. The outputs 20 of the second switching matrix 5 are then connected to the second inputs 21 of the second changeover device 3. The second changeover device 3 likewise comprises changeover elements 22 by means of which the associated first input 11 or second input 21 can each be selectively connected to the associated output 23 of the changeover device 3. The outputs 23 are then connected to wires or cables which lead to the subscribers, with the outputs 23 preferably being in the form of multipole plug connectors, like the inputs 8 of the first changeover device 2. Each input 12, 19 can be connected to each output 15, 20 by means of the switching matrices 4, 5.


As can be seen, the first changeover device 2 and the first switching matrix 4 have mirror-image symmetry with respect to the second changeover device 3 and the second switching matrix 5, so that identical components can be used here.


The process of a subscriber switching from a pure POTS service to an enhanced service will now be briefly explained in more detail. In the basic state, the m inputs 8 of the first changeover device are connected to the m first outputs 9, and the m first inputs 11 of the second changeover device 3 are connected to the m outputs 23 of the second changeover device 3, that is to say the subscribers are provided with only a POTS service. If a subscriber then additionally wishes to take advantage of a broadband service, his input 8 is connected to its associated second output 10. At the first switching matrix 4, the associated input 12, which is connected to the output 10, is then connected to an output 15, which is connected to an unused splitter module 7, of the switching matrix 4. An association between the subscriber and the splitter module 7 is then formed in the DSLAM 6, so that the broadband data (e.g. XDSL) arriving via a glass-fiber cable 24 is then transmitted to the subscriber of the associated splitter module 7. In the splitter module 7, the POTS and data signals are combined in the signal direction toward the subscriber, and the signal is separated into POTS and data signals in the direction toward the switching center. The associated POTS/data connection 18 of the splitter module 7 is connected to an associated input 19 of the second switching matrix 5. This input 19 is then connected to the second input 21, which is associated with the subscriber, of the changeover device 3 by means of the switching matrix 5. The second input 21 is accordingly connected to the output 23 by the changeover element 22. A broadband data service can thus be allocated to a subscriber without manual jumpering. In addition to this automatic allocation of broadband data services, the distribution device also allows automatic jumpering of the subscriber lines themselves. For example, if a subscriber moves, his input 8 can be associated with another second input 21 of the second changeover device 3 by means of the two switching matrices 4, 5. If the outputs 23 of the subscribers j, k are to be exchanged for example, the two associated inputs 8 are connected to the second outputs 10 and associated with the other respective inputs 21 by means of the second switching matrix, each of these inputs then being switched-through to the output 23 by the changeover elements 22.


LIST OF REFERENCE SYMBOLS




  • 1 Distribution device


  • 2 Changeover device


  • 3 Changeover device


  • 4 Switching matrix


  • 5 Switching matrix


  • 6 DSLAM


  • 7 Splitter module


  • 8 Inputs


  • 9 First outputs


  • 10 Second outputs


  • 11 First inputs


  • 12 Inputs


  • 13 Changeover elements


  • 14 Controller


  • 15 Outputs


  • 16 POTS connections


  • 17 Data connections


  • 18 POTS/data connections


  • 19 Inputs


  • 20 Outputs


  • 21 Second inputs


  • 22 Changeover elements


  • 23 Outputs


  • 24 Glass-fiber cable

  • S Control signal


Claims
  • 1. A distribution device in the subscriber access area, comprising two changeover devices, two switching matrices, a DSLAM adapted to be connected only to a data service and having associated splitter modules, and at least one controller, in which the first changeover device comprises m inputs, m first outputs and m second outputs, with a first and a second output having one associated changeover element by means of which an associated input can be selectively connected to the first or to the second output, and wherein the associated input is adapted to be connected only to a POTS service, the second changeover device comprises m first inputs, m second inputs and m outputs, with a first input and a second input having one associated changeover element by means of which an associated output can be selectively connected to the first or to the second input, the first switching matrix has m inputs and n outputs, andthe second switching matrix has n inputs and m outputs, where n<m,the inputs of the first changeover device can be connected to a switching center,the first outputs of the first changeover device are connected directly to the first inputs of the second changeover device, and the second outputs of the first changeover device are connected only to the inputs of the first switching matrix,the second inputs of the second changeover device are connected only to the outputs of the second switching matrix, and the outputs of the second changeover device are connected directly to subscriber lines,the splitter modules have POTS connections, data connections and POTS/data connections, with the outputs of the first switching matrix being connected to the POTS connections, the data connections being connected to the DSLAM, and the POTS/data connections being connected to the inputs of the second switching matrix, andthe controller switches the first and second changeover devices and switching matrices between a basic state and an enhanced state by sending a signal to both of the first changeover device and the second changeover device,wherein when in the basic state, the associated input of the first changeover device is directly connected to the first output of the first changeover device via the one associated changeover element of the first changeover device, and where the first input of the second changeover device is directly connected to the associated output of the second changeover device via the one associated changeover element of the second changeover device, such that a subscriber receives only the POTS service in the basic state, andwherein when in the enhanced state, the associated input of the first changeover device is directly connected to the second output of the first changeover device via the one associated changeover element of the first changeover device, and where the second output of the first changeover device is connected to the second input of the second changeover device via the first switching matrix, at least one of the splitter modules, and the second switching matrix, and where the second input of the second changeover device is directly connected to the associated output of the second changeover device via the one associated changeover element of the second changeover device, such that the subscriber receives a POTS/data service in the enhanced state, wherein a POTS component of the POTS/data service is not routed from the first output of the first changeover device to the first input of the second changeover device.
  • 2. The distribution device as claimed in claim 1, wherein the controller is a constituent part of the DSLAM.
  • 3. The distribution device as claimed in claim 1, wherein the changeover elements of the changeover devices are in the form of relays.
  • 4. The distribution device as claimed in claim 3, wherein the relays are in the form of bistable or monostable changeover switches.
  • 5. A distribution device in the subscriber access area, comprising two changeover devices, two switching matrices, a DSLAM adapted to be connected only to a data service and having associated splitter modules, and at least one controller, in which the first changeover device comprises m inputs, first outputs and second outputs, with the first changeover device having switches by which the inputs can be selectively connected to the first or to the second outputs, and wherein at least one of the inputs is adapted to be connected only to a POTS service, the second changeover device comprises first inputs, second inputs and outputs, with the second changeover device having switches by which the outputs can be selectively connected to the first or to the second inputs, andthe first and second switching matrixes having inputs and outputs,the inputs of the first changeover device can be connected to a switching center, the first outputs of the first changeover device are connected directly to the first inputs of the second changeover device, and the second outputs of the first changeover device are connected only to the inputs of the first switching matrix,the second inputs of the second changeover device are connected only to the outputs of the second switching matrix, and the outputs of the second changeover device are connected directly to subscriber lines,the splitter modules have POTS connections, data connections and POTS/data connections, with the outputs of the first switching matrix being connected to the POTS connections, the data connections being connected to the DSLAM, and the POTS/data connections being connected to the inputs of the second switching matrix, andthe controller switches the first and second changeover devices and switching matrices between a basic state and an enhanced state by sending a signal to both of the first changeover device and the second changeover device,wherein when in the basic state, the associated input of the first changeover device is directly connected to the first output of the first changeover device via the one associated changeover element of the first changeover device, and where the first input of the second changeover device is directly connected to the associated output of the second changeover device via the one associated changeover element of the second changeover device, such that in a basic state, a subscriber receives only the POTS service via the first changeover device and the second changeover device, andwherein when in the enhanced state, the associated input of the first changeover device is directly connected to the second output of the first changeover device via the one associated changeover element of the first changeover device, and where the second output of the first changeover device is connected to the second input of the second changeover device via the first switching matrix, at least one of the splitter modules, and the second switching matrix, and where the second input of the second changeover device is directly connected to the associated output of the second changeover device via the one associated changeover element of the second changeover device, such that the subscriber receives a POTS/data service in the enhanced state, wherein a POTS component is routed via the second output of the first changeover device and the first switching matrix and joins the data component at the splitter.
Priority Claims (1)
Number Date Country Kind
10 2005 022 547 May 2005 DE national
PCT Information
Filing Document Filing Date Country Kind 371c Date
PCT/EP2006/004420 5/11/2006 WO 00 6/19/2008
Publishing Document Publishing Date Country Kind
WO2006/122699 11/23/2006 WO A
US Referenced Citations (85)
Number Name Date Kind
4430732 Saga et al. Feb 1984 A
4609778 Franklin et al. Sep 1986 A
4833708 Goodrich May 1989 A
5522042 Fee et al. May 1996 A
5542854 Bowen Aug 1996 A
5552962 Feustel et al. Sep 1996 A
5754404 Biermann et al. May 1998 A
5764754 Ortel et al. Jun 1998 A
5790546 Dobbins et al. Aug 1998 A
5903372 Czerwiec May 1999 A
5905781 McHale et al. May 1999 A
5949763 Lund Sep 1999 A
6067316 Amrany et al. May 2000 A
6148006 Dyke et al. Nov 2000 A
6215855 Schneider Apr 2001 B1
6266348 Gross et al. Jul 2001 B1
6325636 Hipp et al. Dec 2001 B1
6335936 Bossemeyer, Jr. et al. Jan 2002 B1
6349123 Kim Feb 2002 B1
6370137 Lund Apr 2002 B1
6370149 Gorman et al. Apr 2002 B1
6400713 Thomas et al. Jun 2002 B1
6477238 Schneider et al. Nov 2002 B1
6493318 Bare Dec 2002 B1
6597689 Chiu et al. Jul 2003 B1
6625019 Steinman et al. Sep 2003 B1
6640239 Gidwani Oct 2003 B1
6674756 Rao et al. Jan 2004 B1
6754329 Teixeira Jun 2004 B2
6757382 Wilkes, Jr. et al. Jun 2004 B1
6819746 Schneider et al. Nov 2004 B1
6826280 Sajadi et al. Nov 2004 B1
6868092 Bell et al. Mar 2005 B1
6944361 Xue et al. Sep 2005 B2
6944555 Blackett et al. Sep 2005 B2
6954463 Ma et al. Oct 2005 B1
6977925 Pittman Dec 2005 B2
7092364 Franklin et al. Aug 2006 B1
7103650 Vetrivelkumaran et al. Sep 2006 B1
7154884 Dove et al. Dec 2006 B2
7194538 Rabe et al. Mar 2007 B1
7292531 Hill Nov 2007 B1
7293109 Ott et al. Nov 2007 B2
7295566 Chiu et al. Nov 2007 B1
7328260 Muthiyan et al. Feb 2008 B1
7339936 Valadarsky et al. Mar 2008 B2
7415207 Lanzone et al. Aug 2008 B2
7430161 Hidaka Sep 2008 B2
7463637 Bou-Diab et al. Dec 2008 B2
7475274 Davidson Jan 2009 B2
7483438 Serghi et al. Jan 2009 B2
7486698 Betts et al. Feb 2009 B2
7505413 Gous Mar 2009 B2
7512125 Betts et al. Mar 2009 B2
7561571 Lovett et al. Jul 2009 B1
7570585 DePaul et al. Aug 2009 B2
7570587 Wilson et al. Aug 2009 B1
7593607 Beshai et al. Sep 2009 B2
7849225 Schofield et al. Dec 2010 B2
7864773 Ah Sue Jan 2011 B2
7957269 Tu et al. Jun 2011 B2
20010015978 Blanset et al. Aug 2001 A1
20010031111 Irwin Oct 2001 A1
20020080445 Falkenstein et al. Jun 2002 A1
20020101818 Teixeira Aug 2002 A1
20020101864 Teixeira Aug 2002 A1
20020106075 Foss et al. Aug 2002 A1
20020168054 Klos et al. Nov 2002 A1
20020181475 Dove et al. Dec 2002 A1
20020191777 Milbrandt et al. Dec 2002 A1
20030120817 Ott et al. Jun 2003 A1
20030231744 Grosse-Boes et al. Dec 2003 A1
20040076284 Baker et al. Apr 2004 A1
20040120508 Sajadi et al. Jun 2004 A1
20040217881 Pedyash et al. Nov 2004 A1
20040228468 Cook Nov 2004 A1
20050074021 Bossemeyer, Jr. et al. Apr 2005 A1
20050152340 Voit et al. Jul 2005 A1
20050195584 AbuGhazaleh et al. Sep 2005 A1
20070211642 Franzke et al. Sep 2007 A1
20070211740 Franzke et al. Sep 2007 A1
20070211882 Hatte et al. Sep 2007 A1
20070211883 Franzke et al. Sep 2007 A1
20080059651 Ashwood Smith Mar 2008 A1
20080266049 Franzke Oct 2008 A1
Foreign Referenced Citations (11)
Number Date Country
101 04 705 Aug 2002 DE
0 648 061 Apr 1995 EP
0 858 221 Aug 1998 EP
1 229 745 Aug 2002 EP
WO 0120922 Mar 2001 WO
WO 0203594 Jan 2002 WO
WO 2005091613 Sep 2005 WO
WO 2006063951 Jun 2006 WO
WO 2006122698 Nov 2006 WO
WO 2006122699 Nov 2006 WO
WO 2007060196 May 2007 WO
Non-Patent Literature Citations (11)
Entry
U.S. Appl. No. 11/914,680, filed Jul. 20, 2008 entitled “Active Distribution Device in a Subscriber Connection Area”.
Prosecution History of U.S. Appl. No. 11/503,861 (OA Oct. 29, 2009; Resp. Mar. 1, 2010; Final OA Jun. 22, 2010; Resp. Oct. 22, 2010).
Prosecution History of U.S. Appl. No. 11/503,653 (OA Oct. 1, 2009; Resp. Feb. 1, 2010; Final OA May 17, 2010; Resp. Oct. 22, 2010).
Prosecution History of U.S. Appl. No. 11/503,849 (OA Mar. 6, 2009; Resp. Sep. 8, 2009; Final OA Mar. 17, 2010; Resp Sep. 17, 2010).
Prosecution History of U.S. Appl. No. 11/503,667 (OA Oct. 29, 2009; Resp. Mar. 1, 2010; Final OA Jun. 16, 2010).
Prosecution History of U.S. Appl. No. 11/503,861 (OA Feb. 22, 2011), 25 pgs.
Prosecution History of U.S. Appl. No. 11/503,653 (OA Jan. 26, 2011), 16 pgs.
Prosecution History of U.S. Appl. No. 11/503,667 (Resp. Dec. 16, 2010; OA Apr. 1, 2011; Resp. Sep. 1, 2011; Final OA Sep. 30, 2011, 92 pgs.
Prosecution History of U.S. Appl. No. 11/503,861 (Resp. Jun. 22, 2011; Final OA Aug. 24, 2011), 42 pgs.
Prosecution History of U.S. Appl. No. 11/503,653 (Resp. Jun. 27, 2011; Final OA Aug. 25, 2011), 33 pgs.
Prosecution History of U.S. Appl. No. 11/914,680 (OA Sep. 7, 2011), 14 pgs.
Related Publications (1)
Number Date Country
20090129568 A1 May 2009 US