Upgrading of subscriber connection

• US 6,259,676 B1
• Filed: 06/17/1998
• Issued: 07/10/2001
• Est. Priority Date: 06/17/1998
• Status: Expired due to Fees

• Current Assignee: Nokia Telecommunications Oy (Nokia Corporation)
• Original Assignee: Nokia Telecommunications Oy (Nokia Corporation)
• Inventors: Nylund, Arne, Kellock, Hamish, Norri, Timo
• Primary Examiner(s): Kizou, Hassan
• Assistant Examiner(s): SHAND, ROBERTA A
• Application Number:
  US09/098,565
• Time in Patent Office: 1,119 Days
• Field of Search: 370/352, 370/354, 370/250, 370/360, 370/362, 370/522, 370/524, 370/401, 370/241, 370/248, 379/27
• US Class Current: 370/248
• CPC Class Codes: H04M 3/007 Access interface units for simultaneous transmission of speech and data, e.g. digital subscriber line [DSL] access interface units DSL access multiplexers H04Q11/0478, and H04L12/2856
• CPC Class Codes: H04M 3/30 for subscriber's lines , for the local loop

Abstract

Upgrading of a subscriber connection to another requires an upgrading work done by an electrician. According to the invention, the type of connection is upgraded by remote control. A switch matrix bus including several parallel lines (1-8) is placed in the access node. Connected fixedly in advance to the bus are interface units of an ADSL connection and, when desired, of an ISDN connection, however, in such a way that only one interface is connected actively to one bus line at a time. A controlled switch element (SE1, SE2) connects a line coming from a test relay (R3) located between the end of the subscriber line (e.g. SL3) and its interface to the switch matrix bus instead of the test bus. With a remote control signal supplied through network management a choice is made of which test relay connects the connected subscriber line to the controlled switch element. Since the line or wire couple of the switch matrix bus for its part is connected fixedly to the interface of the ISDN or ADSL subscriber connection, this means that the subscriber line can be connected by way of the switch matrix bus to the ISDN or ADSL interface instead of the original analog interface, or the subscriber line may be connected to the ADSL interface instead of the original ISDN interface. In this way, any subscriber line may be upgraded to a connection of another type by remote control.

Claims

1. Subscriber connection arrangement in a telephone network node, to which several twin-wire subscriber lines lead and through which subscriber terminal equipment has access to the telephone network, the node comprising:

several subscriber interface units of an analog subscriber connection (POTS) and several subscriber interface units of a digital subscriber connection (e.g. ISDN) of a first type, to each of which the end of the subscriber line is connected and which adapt the signal coming from the subscriber line to the telephone network and correspondingly adapt the signal from the telephone network to a signal for transmission on the subscriber line,

several test switches, each of which is located between the end of the subscriber line and the subscriber interface unit,

a test unit controlling the test switch to connect the end of the subscriber line either with the subscriber interface or with the test bus, through which the test unit performs measurements concerning the subscriber line,

whereby the test switches and thus the subscriber lines are arranged in groups so that the test switches of the group may connect the subscriber lines to a common line leading to the test bus,

the node further comprising;

a switch matrix bus formed of several wire couples and to several wire couples (1, . . . , 8) of which is connected the subscriber interface (27) of a digital subscriber connection of another type, which interface performs adapting between the telephone network and a signal of another type propagating on the subscriber line, and

in each group (UNIT 1, . . . UNIT N), is a controlled switch element (SE1,SE2;

SE12,SE22;

. . . SE1N,SE2N) located on a common line (41, . . . 4N) between the test switches (R1, . . . ,RNn) of the group, which switch element connects the common line to one predetermined wire couple of the switch matrix bus or to the test bus.

2. Subscriber connection arrangement as defined in claim 1, wherein when upgrading the type of connection of a subscriber line (e.g. SL3), a test relay (R3) located between the subscriber line and the connected subscriber interface is used for connecting the subscriber line to the common line (41) of the group and a controlled switch element (SE1, SE2) is used for connecting the common line to one line of the switch matrix bus instead of the test bus, whereby the subscriber line (SL3) is connected through the switch matrix bus to the interface of a digital subscriber connection of another type.

3. Subscriber connection arrangement as defined in claim 1, wherein the subscriber interface (27) of the digital subscriber connection of another type is an Asymmetric Digital Subscriber Line (ADSL).

4. Subscriber connection arrangement as defined in claim 3, wherein the ADLS is connected to the switch matrix bus through a first POTS splitter 25 and a second ISDN splitter 26, which separate from the signal coming from the subscriber line those signal frequencies of the analog subscriber connection (POTS) or of the digital subscriber connection (ISDN) of the first type which are lower than the ADSL signal frequencies and which lead them to their own interfaces (23 or 24) but admit the ADSL signal frequencies to the ADSL interface (27).

5. Subscriber connection arrangement as defined in claim 1, wherein

some bus wires are connected fixedly to subscriber interfaces of the digital subscriber connection (e.g. ISDN) of the first type,

the analog subscriber connection (POTS) is upgraded to a digital subscriber connection of the first type by using a test relay (R3) located between the subscriber line (SL) and the connected subscriber interface for connecting the subscriber line to the line (41) common to the group and by using the controlled switch element (SE1, SE2) for connecting the common line not to the test bus but to that line of the switch matrix bus which is connected fixedly to subscriber interfaces of the digital subscriber connection (ISDN) of the first type.

6. Subscriber connection arrangement as defined in claim 4, wherein

the wires of the switch matrix bus are connected fixedly by turns to the first and second splitters (POTS Splitter 25, Splitter 26) and

the controlled switch element (SE1,SE2;

SE12,SE22;

. . . SE1N,SE2N) may connect the common line (41, . . . 4N) and thus the subscriber line either to a wire of the switch matrix bus, which is connected fixedly to the first splitter (POTS Splitter 25), or to a wire of the switch matrix bus, which is connected fixedly to the second splitter (ISDN Splitter 26).

7. Subscriber connection arrangement as defined in claim 2, wherein upgrading of the type of subscriber connection of the subscriber line is performed by remote control through the network management system of the telephone network.

8. Subscriber connection arrangement as defined in claim 7, wherein the test unit performs upgrading of the type of subscriber connection in response to a command arriving from the network management system of the telephone network.

9. Subscriber connection arrangement as defined in claim 1, wherein the controlled switch element includes two relays, of which the first relay (SE1) connects the common line (41) from the test switches (R) to the second relay (SE2) instead of the test bus, and the second relay connects the common line further alternatively to one of two lines of the switch matrix bus.

10. Subscriber connection arrangement as defined in claim 4, wherein one of the lines of the switch matrix bus is connected fixedly to the first splitter (POTS Splitter 25), whereby an analog subscriber connection may be upgraded to an ADSL connection and the other line of the switch matrix bus is connected fixedly to the second splitter (ISDN Splitter 24), whereby an ISDN subscriber connection can be upgraded to an ADSL connection.