Method and apparatus for voice data packets

• US 20050169317A1
• Filed: 01/24/2005
• Published: 08/04/2005
• Est. Priority Date: 01/30/2004
• Status: Active Grant

• Current Assignee: Maxlinear Incorporated
• Original Assignee: Lantiq Deutschland GMBH (Intel Corporation)
• Inventors: Pruecklmayer, Stephan H.
• Granted Patent: US 7,860,086 B2
• Time in Patent Office: Days
• US Class Current: 370/498
• CPC Class Codes: H04L 12/64 Hybrid switching systems

Abstract

Data transmission method for voice data packets (SDP) between at least one voice signal processor (7-i) and a network processor (3) using a voice data bus (10) in time-division multiplex data frames which each have a predetermined number of timeslots (TS), where the voice data packets (SDP) from a voice signal processor (7-i) are transmitted in split form via the voice data bus (10) in particular timeslots provided for the respective voice signal processor (7-i).

Claims

1. Data transmission method for voice data packets between at least one voice signal processor and a network processor using a voice data bus in time-division multiplex data frames which each have a predetermined number of timeslots, where the voice data packets from a voice signal processor are transmitted in split form via the voice data bus in particular timeslots provided for the respective voice signal processor.

2. Method according to claim 1, wherein the number of timeslots provided for a particular voice signal processor within a time-division multiplex data frame is configurable.

3. Method according to claim 1, wherein a prescribed number of data bytes is transmitted in each timeslot.

4. Method according to claim 1, wherein each voice data packet comprises a start flag to indicate the start of the voice data packet, voice data packet management data, voice signal data and an end flag to indicate the end of the voice data packet.

5. Method according to claim 1, wherein voice signal data are transmitted between the voice signal processor and at least one subscriber port connected thereto.

6. Method according to claim 5, wherein the voice signal data from a subscriber port are buffer-stored in an associated subscriber port buffer store in the voice signal processor.

7. Method according to claim 6, wherein the buffer-stored voice signal data from a subscriber port are processed by the voice signal processor.

8. Method according to claim 7, wherein the voice signal data received from a subscriber port and processed are packed by the voice signal processor into voice data packets and these voice data packets are transmitted in split form to the network processor via the voice data bus in the timeslots associated with the voice signal processor.

9. Method according to claim 8, wherein the voice signal data transmitted in split form in the timeslots associated with a voice signal processor are compiled in the network processor to form voice data packets from the respective voice signal processor.

10. Method according to claim 5, wherein the voice data packets intended for a subscriber port on a voice signal processor are transmitted in split form from the network processor via the voice data bus A in the timeslots associated with the respective voice signal processor.

11. Method according to claim 10, wherein the voice signal data transmitted in split form to a voice signal processor via the voice data bus in the associated timeslots are compiled in the respective voice signal processor to form voice data packets.

12. Method according to claim 1, wherein the voice data bus is a PCM bus.

13. Method according to claim 12, wherein each voice signal processor is connected to the PCM bus by means of an associated PCM driver circuit.

14. Method according to claim 1, in which the voice data packets are transmitted via the voice data bus in HDLC frames.

15. Subscriber linecard for connecting subscriber terminals to a data network having:

a) a network processor which is connected to the data network by means of a network interface;

b) at least one voice signal processor for voice signal processing, where each voice signal processor can be connected to the subscriber terminals via subscriber ports;

c) a control bus which is provided between the network processor and the voice signal processor and can be used to transmit control signals for setting up telephone connections between subscriber terminals; and

having

d) a voice data bus, provided between the network processor and the voice signal processors, for transmitting voice data packets, where the voice data packets are transmitted in split form in time-division multiplex data frames which each have a predetermined number of timeslots, and where timeslots intended for each voice signal processor are provided within a time-division multiplex data frame.

16. Subscriber linecard according to claim 15, wherein the voice data bus is a PCM data bus.

17. Subscriber linecard according to claim 15, wherein the voice signal processor is connected to the PCM data bus via a PCM driver.

18. Subscriber linecard according to claim 15, wherein each subscriber port has an SLIC circuit for connecting a telephone terminal.

19. Subscriber linecard according to claim 18, wherein each subscriber port has an analog/digital converter for converting an analog voice signal into voice data, and a digital/analog converter for converting voice data into an analog voice signal.

20. Subscriber linecard according to claim 15, wherein the data network is the Internet.