System and method for hook state notification

• US 8,036,360 B1
• Filed: 04/28/2006
• Issued: 10/11/2011
• Est. Priority Date: 04/28/2006
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Katapadi, Umesh P., Gogineni, Surya B., Leung, Wayne, Linton, Daniel P.
• Primary Examiner(s): ADDY, THJUAN KNOWLIN
• Application Number:
  US11/380,671
• Time in Patent Office: 1,992 Days
• Field of Search: 379/207.05, 379/207.04, 379/207.07, 379/207.06, 379/201.01, 370/352
• US Class Current: 379/207.05
• CPC Class Codes: H04L 65/1066 Session management
• CPC Class Codes: H04L 65/1096 Supplementary features, e.g. call forwarding or call holding systems providing special services or facilities to telephony subscribers H04M3/42
• CPC Class Codes: H04M 3/42374 where the information is provided to a monitoring entity such as a potential calling party or a call processing server
• CPC Class Codes: H04M 7/1205 where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks

Abstract

In one embodiment of the invention, a method produces a hook status notification. The method comprises detecting an off-hook state, allocating a half-dialog identification, generating an off-hook notification message, and associating the half-dialog identification with the off-hook notification message. In an alternative embodiment, a communication platform is adapted to comprise a processor component operable to receive an off-hook notification message comprising a half-dialog identification, and to store the half-dialog identification. The communication platform subsequently receives a signaling protocol message initiating a dialog, wherein the signaling protocol message is associated with the half-dialog identification. The communication platform then correlates the second signaling protocol message with the stored half-dialog identification.

Claims

1. A method for producing a hook status notification of an endpoint, the method comprising:

detecting, by the endpoint, an off-hook state of the endpoint;

allocating, by the endpoint, a half-dialog identification in response to detecting the off-hook state, the half-dialog identification to be associated with a dialog of the endpoint, the half-dialog identification comprising a call identification and a local tag;

generating, by the endpoint, an off-hook notification message, the off-hook notification message comprising a session initiation protocol message; and

associating, by the endpoint, the half-dialog identification with the off-hook notification message by embedding the half-dialog identification in a dialog information document associated with the off-hook notification message.

2. The method of claim 1, wherein the off-hook notification message is a signaling protocol message.

3. The method of claim 1, further comprising storing the half-dialog identification;

receiving a second signaling protocol message initiating a dialog, the second signaling protocol message being associated with the half-dialog identification; and

correlating the second signaling protocol message with the stored half-dialog identification.

4. The method of claim 1, further comprising generating a global call identifier and associating the global call identifier with the off-hook notification message.

5. The method of claim 1, further comprising generating a primary call identification and associating the primary call identification with the off-hook notification message, wherein the primary call identification identifies a primary call in a consultative call.

6. A communication system comprising:

an endpoint, operable to;

detect an off-hook state of the endpoint;

allocate a half-dialog identification in response to detecting the off-hook state of the endpoint, the half-dialog identification to be associated with a dialog of the endpoint, the half-dialog identification comprising a call identification and a local

generate an off-hook notification message, the off-hook notification message comprising a session initiation protocol message; and

associate the half-dialog identification with the off-hook notification message by embedding the half-dialog identification in a dialog information document associated with the off-hook notification message.

7. The communication system of claim 6, wherein the off-hook notification message is a signaling protocol message.

8. The communication system of claim 6, further comprising a communication platform operable to receive and store the half-dialog identification;

receive a second signaling protocol message initiating a dialog, the second signaling protocol message being associated with the half-dialog identification; and

correlate the second signaling protocol message with the stored half-dialog identification.

9. A communication platform comprising a processor component operable to:

receive an off-hook notification message comprising a half-dialog identification from an endpoint, the half-dialog identification to be associated with a dialog of the endpoint;

store the half-dialog identification;

receive, from the endpoint, a signaling protocol message initiating the dialog, the signaling protocol message being associated with the half-dialog identification, the off-hook notification message and the signaling protocol message comprising session initiation protocol messages; and

correlate the signaling protocol message with the stored half-dialog identification to facilitate the dialog.

10. Software embodied in a non-transitory computer-readable medium comprising computer code such that when executed is operable to:

detect an off-hook state of an endpoint;

allocate, by the endpoint, a half-dialog identification in response to detecting an off-hook state of the endpoint, the half-dialog identification to be associated with a dialog of the endpoint, the half-dialog identification comprising a call identification and a local tag;

generate, by the endpoint, an off-hook notification message, the off-hook notification message comprising a session initiation protocol message; and

associate, by the endpoint, the half-dialog identification with the off-hook notification message by embedding the half-dialog identification in a dialog information document associated with the off-hook notification message.

11. The software of claim 10, wherein the off-hook notification message is a signaling protocol message.

12. The software of claim 10, further comprising storing the half-dialog identification;

receiving a second signaling protocol message initiating a dialog, the second signaling protocol message being associated with the half-dialog identification; and

correlating the second signaling protocol message with the stored half-dialog identification.

13. A communication system comprising:

means for detecting an off-hook state of an endpoint;

means for allocating a half-dialog identification in response to detecting the off-hook state, the half-dialog identification to be associated with a dialog of the endpoint, the half-dialog identification comprising a call identification and a local tag;

means for generating an off-hook notification message, the off-hook notification message comprising a session initiation protocol message;

means for associating the half-dialog identification with the off-hook notification message by embedding the half-dialog identification in a dialog information document associated with the off-hook notification message;

means for storing the half-dialog identification;

means for receiving, from the endpoint, a signaling protocol message initiating the dialog, the signaling protocol message being associated with the half-dialog identification; and

means for correlating the signaling protocol message with the stored half-dialog identification.