Customer premises equipment border element for voice over internet protocol services

• US 8,630,299 B1
• Filed: 09/30/2005
• Issued: 01/14/2014
• Est. Priority Date: 09/30/2005
• Status: Expired due to Fees

• Current Assignee: AT&T Corporation (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Afshar, Siroos K., Ezrol, Gerald M., Fisher, Stephen, Glazer, Samuel, Roy, Radhika R.
• Primary Examiner(s): Phan, Man
• Assistant Examiner(s): KAVLESKI, RYAN C
• Application Number:
  US11/239,753
• Time in Patent Office: 3,028 Days
• Field of Search: None
• US Class Current: 370/401
• CPC Class Codes: H04J 3/22 in which the sources have different rates or codes simultaneous speech and digital data or video transmission H04M11/06; see provisional also H04J3/16
• CPC Class Codes: H04L 12/28 characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks] wireless communication networks H04W ; arrangements for dividing the transmission path H04W40/00
• 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

Abstract

A customer premises border element is disclosed that functions as an interface between devices, such as SIP devices located on a customer'"'"'s premises, and a border element located in the service provider'"'"'s network. Such customer premises border elements are advantageous in that they are relatively inexpensive since they only have to support devices located on the customer'"'"'s premises. At the same time, by performing a number of functions, such as media transcoding and a portion of call processing, it reduces the processing requirements of network border elements.

Claims

1. An apparatus, comprising:

a first border element comprising a processor located at a customer premises for;

receiving a first message at the first border element from a session initiation protocol-based communication device located at the customer premises, wherein the first border element is located at a border of the customer premises;

performing customer premises functions in response to the first message, wherein the customer premises functions comprise a call admission control function, a quality of service control function, a firewall control function, and a media relay function;

translating an address associated with the first message to a translated address associated with a second border element located at a border of a service provider voice over internet protocol network;

sending the first message to the second border element located at the border of the service provider voice over internet protocol network using the translated address, the second border element providing a single connection point for the first border element and the service provider voice over internet protocol network;

receiving from the second border element a second message indicative of a first quality of service to be provided by the first border element to a call in response to the first message, wherein the first quality of service is directed by the service provider voice over internet protocol network;

establishing the call using the first quality of service; and

transcoding a first media stream associated with the call from a first format to a second format, wherein the transcoding is directed by the service provider voice over internet protocol network.

2. The apparatus of claim 1 wherein the first border element further comprises a firewall for sending the first message to the second border element and for controlling messages sent to and from the first border element.

3. The apparatus of claim 1 further comprising:

a network element in the service provider network for relaying the first media stream from the first border element to a third border element located at a second customer premises.

4. A method for registering a session initiation protocol-based communication device with a voice over internet protocol network comprising:

sending a first registration message from a first border element comprising a processor located at a border of a customer premises to a second border element located at a border of a network provider voice over internet protocol network, wherein the first border element performs a call admission control function, a quality of service control function, a firewall control function, and a media relay function;

receiving at the first border element a second registration message from the session initiation protocol-based communication device;

translating, by the first border element, an address associated with the second registration message to create a translated address;

sending, by the first border element, the second registration message having the translated address to the second border element located at the border of the network provider voice over Internet protocol network, the second border element providing a single connection point for the first border element and the network provider voice over internet protocol network;

receiving at the first border element from the second border element a message indicative of a first quality of service to be provided by the first border element to a call after the sending of the second registration message, wherein the first quality of service is directed by the network provider voice over internet protocol network;

establishing the call, by the first border element, using the first quality of service; and

transcoding, by the first border element, a first media stream associated with the call from a first format to a second format, wherein the transcoding is directed by the network provider voice over internet protocol network.

5. The method of claim 4 wherein the first registration message comprises a message to register the first border element with the network provider voice over internet protocol network.

6. The method of claim 4 wherein the second registration message comprises a message to register the session initiation protocol-based communication device with the network provider voice over internet protocol network.

7. A method for processing a call at a first border element located at a first customer premises, the method comprising:

receiving an INVITE message, by the first border element comprising a processor, from a customer communication device, wherein the first border element is located at a border of the first customer premises, wherein the first border element performs a call admission control function, a quality of service control function, a firewall control function, and a media relay function;

translating, by the first border element, a first address associated with the INVITE message to provide a translated address;

sending the INVITE message, by the first border element, to a network border element located at a border of a network provider voice over internet protocol network using the translated address, the network border element providing a single connection point for the first border element and the network provider voice over internet protocol network;

receiving, by the first border element, from the network border element a message indicative of a first quality of service to be provided to a call by the first border element in response to the INVITE message, wherein the first quality of service is directed by the network provider voice over internet protocol network;

establishing the call, by the first border element, using the first quality of service; and

transcoding a first media stream associated with the call, by the first border element, wherein the transcoding is directed by the network provider voice over internet protocol network.

8. The method of claim 7 wherein the sending comprises opening a communication path through a firewall for controlling messages sent to and from the first border element.

9. The method of claim 7 further comprising relaying the first media stream from the first border element to a second border element located at a second customer premises.