Method and system for communicating voice over IP access networks

• US 20020176403A1
• Filed: 03/20/2002
• Published: 11/28/2002
• Est. Priority Date: 03/20/2001
• Status: Abandoned Application

• Current Assignee: Eytan Radian
• Original Assignee: Eytan Radian
• Inventors: Radian, Eytan
• Application Number:
  US10/101,571
• Publication Number:
  US 20020176403A1
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 12/6418 Hybrid transport
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04L 2012/6424 Access arrangements
• CPC Class Codes: H04L 2012/6427 Subscriber Access Module; Concentrator; Group equipment
• CPC Class Codes: H04L 2012/6475 N-ISDN, Public Switched Telephone Network [PSTN]
• CPC Class Codes: H04L 2012/6481 Speech, voice
• CPC Class Codes: H04L 65/1026 at the edge
• CPC Class Codes: H04L 65/1036 at the edge
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 65/1106 Call signalling protocols; H.323 and related
• CPC Class Codes: H04M 7/0069 comprising a residential gateway, e.g. those which provide an adapter for POTS or ISDN terminals
• CPC Class Codes: H04M 7/1245 where a network other than PSTN/ISDN interconnects two PSTN/ISDN networks

Abstract

A system and a method for a voice gateway to deliver voice over Internet Protocol (VoIP) via an electronic network for digital data signals comprising IP packets. The system and method operate by transferring and converting voice streams from a Public Switched Telephone Network (PSTN) into IP packets for delivery to a customer premises inter-working (CP-IWF) device via a data port, which is interfaced to customer premises equipment (CPE), wherein the CP-IWF device serves as a gateway between the digital data signals used in the electronic network and the PSTN voice streams. The system includes an access gateway, including a V5.x device for interfacing the electronic network to the PSTN. The system also includes a voice gateway to deliver voice over Internet protocol (VoIP) and a Call Agent to keep track of the calling state between said CP-IWF device and said voice gateway, such that the voice streams are converted from the PSDN/Integrated Services Digital Network (ISDN) into IP packets.

Claims

1. A system to deliver voice over Internet Protocol (VoIP) via an electronic network, utilizing IP packets for transmitting digital data signals, wherein a voice gateway interfaces with a Public Switched Telephone Network/Integrated Services Digital Network (PSTN/ISDN) with a customer premises inter-working (CP-IWF) device via a data port and with customer premises equipment (CPE), and wherein the CP-IWF device serves as a gateway between the digital data signals used in the electronic network and PSTN voice streams, said system comprising:

an access gateway, including a V5.x device for interfacing the electronic network to the PSTN;

a voice gateway interfacing with the PSTN to deliver VoIP; and

a Call Agent to keep track of the calling state between the CP-IWF device and said voice gateway,

such that the voice streams are transferred from the PSTN/ISDN and converted into IP packets.

2. The system according to claim 1, further comprising a central office-based inter-working function (CO-IWF) that connects said CPE directly to said electronic network.

3. The system according to claim 2, wherein said CO-IWF comprises access gateway, and further comprises Next Generation Access (NGA).

4. The system according to claim 1, wherein the V6.x device enables a variety of value added services.

5. The system according to claim 1, wherein said access gateway connects to said V5.x device via a plurality of E1/T1 interfaces.

6. The system according to claim 1, wherein said access gateway is located at the central offices of a service provider.

7. The system according to claim 1, wherein said access gateway further comprises a voice engine for processing calls between the PSTN/ISDN and the electronic network.

8. The system according to claim 1, wherein said access gateway includes said Call Agent.

9. The system according to claim 1, wherein said access gateway supports Resource ReSerVation Protocol (RSVP).

10. The system according to claim 1, wherein said access gateway supports IPSec.

11. The system according to claim 1, wherein said access gateway supports Domain Server Name (DSN).

12. The system according to claim 1, wherein said access gateway supports G.729x compression standards.

13. The system according to claim 1, wherein said electronic network is the Internet.

14. The system according to claim 6, wherein access to said Internet is handed over automatically via digital-trunked lines to an Internet service provider.

15. The system according to claim 6, wherein access to said Internet is provided by the PSTN.

16. The system according to claim 1, wherein said electronic network is an Intranet.

17. The system according to claim 1, wherein the CP-IWF device comprises a cable modem access box.

18. The system according to claim 1, wherein the CP-IWF device comprises a set-top box for interfacing a TV set, the PSTN/ISDN and the data port.

19.he. The system according to claim 1, wherein the system supports standard protocols relating to at least one of quality of service (QOS) and security.

20. A method to provide interfacing for a PSTN/ISDN access gateway via a Call Agent to an IP network for entry to the customer premises equipment (CPE) Integrated Access Device/Media Terminal Adapter (IAD/MTA), providing both PSTN for a plurality of calls and ISDN services, said method comprising

setting-up a call;

allocating of a time-slot or transmission of said call;

switching said call as required;

tearing-down said call; and

de-allocating of said time-slot for sad call.