Integrated POTS/MLT card

• US 20030198341A1
• Filed: 04/23/2002
• Published: 10/23/2003
• Est. Priority Date: 04/23/2002
• Status: Abandoned Application

• Current Assignee: ADC DSL Systems, Inc. (TE Connectivity Ltd. (United Kingdom))
• Original Assignee: ADC DSL Systems, Inc. (TE Connectivity Ltd. (United Kingdom))
• Inventors: Mann, Richard Thomas, Smith, Christopher S.
• Application Number:
  US10/127,921
• Publication Number:
  US 20030198341A1
• Time in Patent Office: Days
• US Class Current: 379/413.03
• CPC Class Codes: H04M 1/253 Telephone sets using digital voice transmission

Abstract

An integrated plain old telephone service (POTS) and metallic loop testing (MLT) card provides lifeline telephone service with multiple channel data service. The integrated card can be piggybacked with an ADSL card to provide a single package of POTS, MLT, and ADSL services.

Claims

1. An integrated POTS and MLT card, comprising:

voice processing circuitry to generate voice signals from external voice data;

POTS circuitry connected to receive voice signals from the voice processing circuitry and to generate combined POTS and ADSL signals from the voice signals and external ADSL data signals;

metallic loop tester (MLT) circuitry to receive the combined ADSL and POTS signals and to allow MLT testing of the combined ADSL and POTS signals; and

a command module to control the voice processing circuitry, the POTS circuitry, and the MLT circuitry.

2. The card of claim 1, and further comprising:

an ADSL card piggybacked to the POTS and MLT card.

3. The card of claim 2, wherein the ADSL card is piggybacked via jumpered backplane-champ connectors.

4. The card of claim 1, wherein the POTS circuitry further comprises:

a plurality of POTS splitters, a POTS splitter for each of a predetermined number of combined ADSL and POTS channels to be generated by the POTS circuitry.

5. The card of claim 4, wherein the number of channels is 24.

6. The card of claim 1, wherein the voice processing circuitry comprises:

a voice processor block with a voice processor and a memory;

a voice processing block comprising;

a digital signal processor;

a plurality of coder/decoders to encode and decode voice data; and

a plurality of subscriber line interface circuits (SLICs), a SLIC for each of the channels.

7. The card of claim 1, wherein the MLT circuitry comprises:

an MLT relay matrix to select, under control of the command module, a particular line for testing.

8. A telecommunications line card assembly, comprising:

a combined POTS and MLT card; and

an ADSL card piggybacked to the combined POTS and MLT card.

9. The telecommunications line card assembly of claim 8, wherein the ADSL card is piggybacked via jumpered backplane connectors.

10. The telecommunications line card assembly of claim 8, wherein the combined POTS and MLT card comprises:

voice processing circuitry to generate voice signals from external voice data;

POTS circuitry connected to receive voice signals from the voice processing circuitry and to generate combined POTS and ADSL signals from the voice signals and external ADSL data signals;

metallic loop tester (MLT) circuitry to receive the combined ADSL and POTS signals and to allow MLT testing of the combined ADSL and POTS signals; and

a command module to control the voice processing circuitry, the POTS circuitry, and the MLT circuitry.

11. The telecommunications line card assembly of claim 10, wherein the POTS circuitry further comprises:

a plurality of POTS splitters, a POTS splitter for each of a predetermined number of combined ADSL and POTS channels to be generated by the POTS circuitry.

12. The telecommunications line card assembly of claim 10, wherein the number of channels is 24.

13. The telecommunications line card assembly of claim 10, wherein the voice processing circuitry comprises:

a voice processor block with a voice processor and a memory;

a voice processing block comprising;

a digital signal processor;

a plurality of coder/decoders to encode and decode voice data; and

a plurality of subscriber line interface circuits (SLICs), a SLIC for each of the channels.

14. The telecommunications line card assembly of claim 10, wherein the MLT circuitry comprises:

an MLT relay matrix to select, under control of the command module, a particular line for testing.

15. The telecommunications line card assembly of claim 10, and further comprising a backplane asynchronous transfer mode cell bus to which the command module and the voice processing circuitry are connected to receive voice data.

16. A combined POTS and MLT card, comprising:

a voice processing block to generate voice signals from incoming voice data;

a plurality of POTS splitters to combine a plurality of external ADSL signals and the plurality of voice signals;

a metallic loop tester block (MLT) to receive the combined ADSL and POTS signals; and

a management processing module connected to the voice processing block and to the MLT block to control operation thereof.

17. The card of claim 16, wherein the management processing module is connected to the voice processing block via a serial port.

18. The card of claim 16, wherein the management processing block and the voice processing block are connected to a backplane asynchronous transfer mode (ATM) cell bus to receive voice data.

19. The card of claim 16, wherein combined POTS and ADSL signals output from the MLT processing block are subjected to line protection.

20. The card of claim 19, wherein the line protected combined POTS ADSL signals are presented to a subscriber via a connector on a front panel of the card.

21. A method of providing POTS and MLT on a single card, comprising:

providing a management module connected to control a POTS circuit and a voice processing circuit;

receiving external voice data through an ATM bus to the voice processing circuit;

extracting a predetermined number of voice channel signals from the voice data;

receiving external ADSL data to the POTS circuit; and

combining in the POTS circuit the received external ADSL data and the extracted voice channel signals to generate a plurality of combined POTS and ADSL channels.

22. The method of claim 21, and further comprising:

providing metallic loop testing (MLT) circuitry between an output and the POTS circuit; and

testing one of the plurality of combined POTS and ADSL channels with the MLT circuitry upon receipt at the MLT circuitry of an external test signal.

23. The method of claim 21, and further comprising:

piggybacking an ADSL card to the single card via champ connectors.

24. A method of operating an integrated POTS and MLT card, comprising:

receiving external voice data and a plurality of ADSL channels at the card;

decoding a plurality of voice channels in voice processing circuitry;

combining the voice channels with the ADSL channels in POTS circuitry; and

outputting a plurality of combined ADSL and POTS channels from the card.

25. The method of claim 24, and further comprising:

initiating a metallic loop test for a predetermined combined ADSL and POTS channel at the receipt of an external test command.

26. The method of claim 25, wherein initiating a metallic loop test comprises:

selecting the predetermined combined ADSL and POTS channel in a metallic loop tester relay matrix.

27. The method of claim 24, and further comprising:

protecting the outputted signals.