Voice over internet protocol (VoIP) telephone apparatus and communication system for carrying VoIP traffic

• US 7,808,978 B2
• Filed: 01/16/2008
• Issued: 10/05/2010
• Est. Priority Date: 01/28/2004
• Status: Active Grant

• Current Assignee: ShoreTel Incorporated (Mitel Networks Corporation)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Edmon, Eugene, Ying, Goangshiuan Shawn, Aspell, Steve M.
• Primary Examiner(s): SMITH, CREIGHTON H
• Application Number:
  US12/014,865
• Publication Number:
  US 20080130633A1
• Time in Patent Office: 993 Days
• Field of Search: 370/352, 370/400, 709/245
• US Class Current: 370/352
• CPC Class Codes: H04L 65/103 in the network
• CPC Class Codes: H04L 65/104 in the network
• 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 65/765 intermediate
• CPC Class Codes: H04L 69/324 in the data link layer [OSI layer 2], e.g. HDLC
• CPC Class Codes: H04M 1/2535 adapted for voice communication over an Internet Protocol [IP] network Voice over Internet Protocol (VoIP) network equipment and services H04M7/006; implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04M 7/1255 where the switching fabric and the switching logic are decomposed such as in Media Gateway Control
• CPC Class Codes: H04Q 2213/13034 A/D conversion, code compression/expansion
• CPC Class Codes: H04Q 2213/13039 Asymmetrical two-way transmission, e.g. ADSL, HDSL
• CPC Class Codes: H04Q 2213/13099 Loop multiplexer
• CPC Class Codes: H04Q 2213/13196 Connection circuit/link/trunk/junction, bridge, router, gateway
• CPC Class Codes: H04Q 2213/13389 LAN, internet
• CPC Class Codes: H04Q 2213/13399 Virtual channel/circuits
• CPC Class Codes: H04Q 3/66 Traffic distributors

Abstract

A method of establishing Voice over Internet Protocol (VoIP) communications is provided. The method includes establishing a virtual circuit to carry VoIP traffic via a first Point to Point Protocol over Ethernet (PPPoE) session and to carry other data traffic via a second PPPoE session. The first PPPoE session and the second PPPoE session are supported by a digital subscriber line access multiplexer (DSLAM).

Claims

1. A method of establishing Voice over Internet Protocol (VoIP) communications, the method comprising:

establishing a virtual circuit to carry VoIP traffic via a first Point-to-Point Protocol over Ethernet (PPPoE) session and to carry other data traffic via a second PPPoE session, wherein the first PPPoE session and the second PPPoE session are supported by a digital subscriber line access multiplexer (DSLAM).

2. The method of claim 1, wherein the virtual circuit is established by an Internet Protocol (IP) telephone device.

3. The method of claim 1, wherein the virtual circuit terminates at a broadband remote access server (BRAS).

4. A method of establishing Voice over Internet Protocol (VoIP) communications, the method comprising:

establishing a virtual circuit at an access router of a service provider network with an Internet Protocol (IP) telephone device, wherein the virtual circuit is dedicated to carrying VoIP traffic between the IP telephone device and the service provider network and wherein the virtual circuit does not include a network element that is coupled directly to a public IP network.

5. The method of claim 4, wherein the service provider network is coupled to a broadband remote access server (BRAS) that is coupled to the public IP network.

6. The method of claim 5, further comprising communicating additional VoIP traffic via a connection between the service provider network and the BRAS.

7. The method of claim 6, wherein the additional VoIP traffic is associated with an additional IP telephone device.

8. A digital subscriber line access multiplexer (DSLAM) adapted to:

route Voice over Internet Protocol (VoIP) traffic to an access router of a VoIP service provider network via a first virtual circuit; and

route data other than the VoIP traffic to a broadband remote access server (BRAS) via a second virtual circuit.

9. The DSLAM of claim 8, further adapted to route additional VoIP traffic to the BRAS via a third virtual circuit, wherein the third virtual circuit is adapted to provide support for a first Point-to-Point Protocol over Ethernet (PPPoE) session dedicated to carrying the additional VoIP traffic and the third virtual circuit provides support for a second PPPoE session dedicated to carrying data other than the additional VoIP traffic.

10. The DSLAM of claim 9, wherein the VoIP traffic is associated with an Ethernet switch coupled to the DSLAM and the additional VoIP traffic is associated with an additional Ethernet switch coupled to the DSLAM.

11. The DSLAM of claim 8, wherein the first virtual circuit and the second virtual circuit are each adapted to support Point-to-Point Protocol over Ethernet sessions.

12. An Internet Protocol (IP) telephone device comprising:

a telephone keypad; and

a Point-to-Point Protocol over Ethernet (PPPoE) client module adapted to initiate a PPPoE session to communicate a VoIP telephone call;

wherein the PPPoE session remains active until an input is received via the telephone keypad to disconnect the PPPoE session.

13. The IP telephone device of claim 12, further comprising a base portion and a telephone handset portion.

14. The IP telephone device of claim 13, wherein the base portion includes a handset interface coupled to the telephone handset portion.

15. The IP telephone device of claim 12, wherein the input is received via a PPPoE function key of the telephone keypad.

16. The IP telephone device of claim 12, wherein the telephone keypad is located on the base portion.