IP Library › Granted Patent US 7,529,233
Granted Patent B2
US 7,529,233 · App. 11/510,215 · Granted May 5, 2009

Interworking progress indicator in SIP-PSTN network

Assignee: Cisco Technology, Inc.
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Quick Facts
Patent No.
US 7,529,233
App. No.
11/510,215
Granted
May 5, 2009
Kind
B2
Abstract

In a particular embodiment, a disconnect message with a progress indicator may be received in a PSTN protocol at a gateway. The gateway determines if the disconnect message includes a progress indicator. The gateway then generates a SIP message with a reason indicator that indicates the SIP message is mapped from a disconnect message that includes the progress indicator. The SIP message is then sent to a second gateway. The second gateway determines that the SIP message should be interworked to a disconnect message. The second gateway uses the reason indicator in the SIP message to determine this. Accordingly, the second gateway sends a disconnect with progress indicator to a second PBX. This allows the second PBX the option to either listen to an in-band announcement or to disconnect without listening to the in-band announcement.

Claims (50)

1. A method comprising:

receiving a first PSTN message including a progress indicator from a PSTN device;

determining a reason indicator for the first PSTN message including a progress indicator, the

generating a SIP message including the reason indicator, the reason indicator indicating that the SIP message is mapped from the first PSTN message that includes the progress indicator; and

sending the SIP message with the reason indicator, wherein a receiving device that receives the SIP message with the reason indicator can interwork the SIP message with the reason header to a corresponding PSTN message with the progress indicator.

2. The method of claim 1 , wherein an option to disconnect or listen to an in-band announcement is provided to the receiving device based on the corresponding PSTN message.

3. The method of claim 1 , wherein the reason indicator is included in a reason header of the SIP message.

4. The method of claim 1 , further comprising:

receiving a first release message to disconnect a call in the SIP protocol in response to sending the SIP message with the reason indicator.

5. A method comprising:

receiving a SIP message;

determining a reason indicator in the SIP message, the reason indicator indicating that the SIP message is mapped from a first PSTN message that includes a progress indicator;

interworking the SIP message into a corresponding PSTN message with a progress indicator based on the reason indicator; and

sending the corresponding PSTN message with the progress indicator, wherein a receiving device that receives the corresponding PSTN message with the progress indicator can perform an action based on the corresponding PSTN message with the progress indicator.

6. The method of claim 5 , wherein the action comprises disconnecting a call or listening to an in-band announcement is provided to the receiving device based on the corresponding PSTN message.

7. The method of claim 5 , wherein the reason indicator is included in a reason header of the SIP message.

8. The method of claim 5 , further comprising:

sending a first release message to disconnect a call in the SIP protocol in response to receiving the SIP message with the reason indicator.

9. An apparatus comprising:

one or more processors; and

a memory containing instructions that, when executed by the one or more processors, cause the one or more processors to perform a set of steps comprising:

receiving a first PSTN message including a progress indicator from a PSTN device;

determining a reason indicator for the first PSTN message including a progress indicator, the

generating a SIP message including the reason indicator, the reason indicator indicating that the SIP message is mapped from the first PSTN message that includes the progress indicator; and

sending the SIP message with the reason indicator, wherein a receiving device that receives the SIP message with the reason indicator can interwork the SIP message with the reason header to a corresponding PSTN message with the progress indicator.

10. The apparatus of claim 9 , wherein the instructions cause the one or more processors to provide an option to disconnect or listen to an in-band announcement to the receiving device based on the corresponding PSTN message.

11. The apparatus of claim 9 , wherein the reason indicator is included in a reason header of the SIP message.

12. The apparatus of claim 9 , wherein the instructions cause the one or more processors to perform a further step comprising:

receiving a first release message to disconnect a call in the SIP protocol in response to sending the SIP message with the reason indicator.

13. An apparatus comprising:

one or more processors; and

a memory containing instructions that, when executed by the one or more processors, cause the one or more processors to perform a set of steps comprising:

receiving a SIP message;

determining a reason indicator in the SIP message, the reason indicator indicating that the SIP message is mapped from a first PSTN message that includes a progress indicator;

interworking the SIP message into a corresponding PSTN message with a progress indicator based on the reason indicator; and

sending the corresponding PSTN message with the progress indicator, wherein a receiving device that receives the corresponding PSTN message with the progress indicator can perform an action based on the corresponding PSTN message with the progress indicator.

14. The apparatus of claim 13 , wherein the instructions cause the one or more processors to provide an option to disconnect a call or listening to an in-band announcement to the receiving device based on the corresponding PSTN message.

15. The apparatus of claim 13 , wherein the reason indicator is included in a reason header of the SIP message.

16. The apparatus of claim 13 , wherein the instructions cause the one or more processors to perform a further step comprising:

sending a first release message to disconnect a call in the SIP protocol in response to receiving the SIP message with the reason indicator.

17. An apparatus comprising:

means for receiving a first PSTN message including a progress indicator from a PSTN device;

means for determining a reason indicator for the first PSTN message including a progress indicator, the

means for generating a SIP message including the reason indicator, the reason indicator indicating that the SIP message is mapped from the first PSTN message that includes the progress indicator; and

means for sending the SIP message with the reason indicator, wherein a receiving device that receives the SIP message with the reason indicator can interwork the SIP message with the reason header to a corresponding PSTN message with the progress indicator.

18. An apparatus comprising:

means for receiving a SIP message;

means for determining a reason indicator in the SIP message, the reason indicator indicating that the SIP message is mapped from a first PSTN message that includes a progress indicator;

means for interworking the SIP message into a corresponding PSTN message with a progress indicator based on the reason indicator; and

means for sending the corresponding PSTN message with the progress indicator, wherein a receiving device that receives the corresponding PSTN message with the progress indicator can perform an action based on the corresponding PSTN message with the progress indicator.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 24, 2006
From: KUMARASAMY, PARAMESWARAN; BANGALORE, MANJUNATH; SIHHA, SANJAY; PARAMESWARAN, KAVITHADEVI
To: CISCO TECHNOLOGY, INC.
Reel/Frame 018244/0299 →
Continuity (1)
Related Publication 20080112397A1 · May 15, 2008