PacketCable controller for voice over IP network

Patent metadata

Field	Value
Publication number	US-9602556-B1
Application number	US-201313837419-A
Country	US
Kind code	B1
Filing date	Mar 15, 2013
Priority date	Mar 15, 2013
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

Disclosed herein are system, method, and computer program product embodiments for an access gateway control function server to convert between network-based call signaling messages and session initiation protocol messages. An embodiment operates by receiving in a first access gateway control function server, a first session initiation protocol (SIP) message sent from a first device and converting the SIP message in the first access gateway control function server to a first network-based call signaling (NCS) message to be received by a second device.

First claim

What is claimed is:

1. A method, comprising:
(a) beginning a call session between a first device and a second device;
(b) receiving in a first access gateway control function server, a first session initiation protocol (SIP) message sent from the first device;
(c) synchronizing voice calling feature data between the first access gateway control function server and a telephony application server;
(d) converting the first SIP message in the first access gateway control function server to a first network-based call signaling (NCS) message to be received by the second device, wherein the converting in the first access gateway control function server comprises:
(i) determining a voice calling feature in the first SIP message, wherein the voice calling feature is provided by the telephony application server and is selected using the first device; and
(ii) converting the voice calling feature in the first SIP message into the first NCS message such that the voice calling feature is presentable to the second device;

(e) transmitting the first NCS message including the voice calling feature to the second device;
(f) determining that the first access gateway control function server has failed;
(g) routing the call session to a second access gateway control function server, wherein the routing prevents disruption to the call session; and
(h) ending the call session between the first device and the second device.

2. The method of claim 1 , further comprising:
(i) providing an interface between the first access gateway control function server and a proxy call session control function server.

3. The method of claim 1 , further comprising:
(i) providing an interface between the first access gateway control function server and a serving/interrogating call session control function server.

4. The method of claim 1 , further comprising:
(i) receiving in the first access gateway control function server, a second network-based call signaling (NCS) message sent from the second device; and
(i) converting the second network-based call signaling (NCS) message in the first access gateway control function server to a second session initial protocol (SIP) message to be received by the first device.

5. The method of claim 1 , wherein the second access gateway control function server is located at a same location as the first access gateway control function server.

6. The method of claim 1 , wherein the second access gateway control function server is located at a different location from the first access gateway control function server.

7. The method of claim 2 , further comprising:
(i) emulating the first device to appear as SIP user equipment connecting to the proxy call session control function server through the first access gateway control function server.

8. A system, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
(a) begin a call session between a first device and a second device;
(b) receive in a first access gateway control function server, a first session initiation protocol (SIP) message sent from the first device; and
(c) synchronize voice calling feature data between the first access gateway control function server and a telephony application server;
(d) convert the first SIP message in the first access gateway control function server to a first network-based call signaling (NCS) message to be received by the second device, wherein to convert the first SIP message, the at least one processor is further configured to:
(i) determine a voice calling feature in the first SIP message, wherein the voice calling feature is provided by the telephony application server and is selected using the first device; and
(ii) convert the voice calling feature in the first SIP message into the first NCS message such that the voice calling feature is presentable to the second device;

(e) transmit the first NCS message including the voice calling feature to the second device;
(f) determine that the first access gateway control function server has failed;
(g) route the call session to a second access gateway control function server, wherein the routing prevents disruption to the call session; and
(h) end the call session between the first device and the second device.

9. The system of claim 8 , the at least one processor further configured to:
(i) provide an interface between the first access gateway control function server and a proxy call session control function server.

10. The system of claim 8 , the at least one processor further configured to:
(i) provide an interface between the first access gateway control function server and a serving/interrogating call session control function server.

11. The system of claim 8 , the at least one processor further configured to:
(i) receive in the first access gateway control function server, a second network-based call signaling (NCS) message sent from the second device; and
(i) convert the second network-based call signaling (NCS) message in the first access gateway control function server to a second session initial protocol (SIP) message to be received by the first device.

12. The system of claim 8 , wherein the second access gateway control function server is located at a same location as the first access gateway control function server.

13. The system of claim 8 , wherein the second access gateway control function server is located at a different location from the first access gateway control function server.

14. The system of claim 9 , the at least one processor further configured to:
(i) emulate the first device to appear as SIP user equipment connecting to the proxy call session control function server through the first access gateway control function server.

15. A non-transitory computer-readable device having instructions stored thereon that, when executed by at least one computing device, causes the at least one computing device to perform operations comprising:
(a) beginning a call session between a first device and a second device;
(b) receiving in a first access gateway control function server, a first session initiation protocol (SIP) message sent from the first device;
(c) synchronizing voice calling feature data between the first access gateway control function server and a telephony application server;
(d) converting the first SIP message in the first access gateway control function server to a first network-based call signaling (NCS) message to be received by the second device, wherein the converting in the first access gateway control function server comprises:
(i) determining a voice calling feature in the first SIP message, wherein the voice calling feature is provided by the telephony application server and is selected using the first device; and
(ii) converting the voice calling feature in the first SIP message into the first NCS message such that the voice calling feature is presentable to the second device;

(e) transmitting the first NCS message including the voice calling feature to the second device;
(f) determining that the first access gateway control function server has failed;
(g) routing the call session to a second access gateway control function server, wherein the routing prevents disruption to the call session; and
(h) ending the call session between the first device and the second device.

16. The method of claim 1 , wherein step (d) further comprises:
(iii) determining, using a user profile stored in the first access gateway control function server, whether the voice calling feature can be processed by the second device; and
(iv) based on the

Assignees

• Csc Holdings Llc

Inventors

• Cham Dev

Classifications

• H04L65/40 Primary

  Support for services or applications · CPC title

• H04L67/565

  Conversion or adaptation of application format or content (adding application control or application functional data H04L67/561) · CPC title

• H04L65/1016 Primary

  IP multimedia subsystem [IMS] · CPC title

• H04L65/1036

  at the edge · CPC title

• H04L65/1104

  Session initiation protocol [SIP] · CPC title