MULTIPLE VOICEMAIL ACCOUNT SUPPORT FOR A VOIP SYSTEM

• US 20070121885A1
• Filed: 08/24/2006
• Published: 05/31/2007
• Est. Priority Date: 11/18/2005
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: SIN, Sam, FANDRIANATO, Jan
• Granted Patent: US 8,064,367 B2
• Time in Patent Office: Days
• US Class Current: 379/219
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 65/401 wherein the services involve a main real-time session and one or more additional parallel real-time or time sensitive sessions, e.g. white board sharing or spawning of a subconference
• CPC Class Codes: H04M 3/42314 in private branch exchanges
• CPC Class Codes: H04M 3/53366 Message disposing or creating aspects
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42
• CPC Class Codes: H04M 7/0075 Details of addressing, directories or routing tables

Abstract

In one embodiment, a method includes receiving, at an IP private branch exchange (IP PBX), an event notification message from a user agent corresponding to a voicemail system. The event notification message includes a Request-URI field identifying a Uniform Resource Identifier (URI) of the IP PBX and a header field identifying a target mailbox. The method also includes identifying a URI corresponding to the target mailbox and forwarding the event notification message with a Request-URI field identifying the URI corresponding to the target mailbox.

Claims

1. A method, comprising:

at a Session Initiation Protocol (SIP) based IP private branch exchange (IP PBX), receiving an event notification message from a user agent corresponding to a voicemail system, said event notification message comprising a Request-URI field identifying a Uniform Resource Identifier (URI) of the IP PBX and a header field identifying a target mailbox;

identifying a URI corresponding to the target mailbox; and

forwarding the event notification message with a Request-URI field identifying the URI corresponding to the target mailbox.

2. The method of claim 1, wherein the event notification message includes a status of a voicemail account associated with the mailbox.

3. The method of claim 1, wherein the event notification message comprises a SIP NOTIFY message.

4. The method of claim 1, wherein the header field identifying the mailbox comprises a TO field of the event notification message.

5. The method of claim 1, further comprising receiving at the IP PBX a SUBSCRIBE request from a target client station associated with the target mailbox.

6. The method of claim 5, further comprising in response to said receiving at the IP PBX the SUBSCRIBE request from the target client station, transmitting a SUBSCRIBE request to the user agent corresponding to the voice mail system.

7. The method of claim 1, wherein the IP PBX is provided in a local area network (LAN) containing a target client station associated with the target mailbox.

8. The method of claim 1, further comprising:

in response to receiving the event notification message at the IP PBX, retrieving a network location of a target client station associated with the target mailbox.

9. The method of claim 8, wherein said retrieving the network location of the target client station comprises retrieving the network location from a database stored in the IP PBX.

10. The method of claim 8, wherein said retrieving the network location of the target client station comprises retrieving an IP address of the target client station.

11. The method of claim 1, further comprising:

in response to receiving the event notification message at the IP PBX, retrieving a network location of a plurality of target client stations associated with the target mailbox;

wherein said forwarding the event notification message with the Request-URI field identifying the URI corresponding to the target mailbox comprises forwarding the event notification message to a plurality of client stations associated with the target mailbox.

12. A system, comprising:

a IP PBX configured to;

receive an event notification message from a user agent corresponding to a voice mail system, said event notification message comprising a Request-URI field identifying a Uniform Resource Identifier (URI) of the IP PBX and a header field identifying a target mailbox;

identify a URI corresponding to the target mailbox; and

forward the event notification message with a Request-URI field identifying the URI corresponding to the target mailbox.

13. The system of claim 12, wherein the event notification message includes a status of a voicemail account associated with the mailbox.

14. The system of claim 12, wherein the event notification message comprises a SIP NOTIFY message.

15. The system of claim 12, wherein the header field identifying the mailbox comprises a TO field of the event notification message.

16. The system of claim 12, wherein the IP PBX is further configured to receive a SUBSCRIBE request from a target client station associated with the target mailbox.

17. The system of claim 16, wherein in response to said receiving the SUBSCRIBE request from the target client station, the IP PBX is configured to transmit a SUBSCRIBE request to the user agent corresponding to the voice mail system.

18. The system of claim 12, further comprising a local area network (LAN) comprising the IP PBX and a target client station associated with the target mailbox.

19. The system of claim 12, wherein in response to receiving the event notification message, the IP PBX is configured to retrieve a network location of a target client station associated with the target mailbox.

20. The system of claim 19, wherein the IP PBX is configured to retrieve the network location of the target client station by retrieving the network location from a database stored in the IP PBX.

21. The system of claim 19, wherein the IP PBX is configured to retrieve the network location of the target client station by retrieving an IP address of the target client station.

22. The system of claim 12, wherein:

in response to receiving the event notification message, the IP PBX is configured to retrieve a network location of a plurality of target client stations associated with the target mailbox; and

the IP PBX is configured to forward the event notification message with the Request-URI field identifying the URI corresponding to the target mailbox by forwarding the event notification message to a plurality of client stations associated with the target mailbox.

23. The system of claim 12, further comprising the user agent corresponding to the voicemail server, said user agent being configured to transmit the event notification message having the Request-URI field identifying the URI of the IP PBX and the header field identifying the target mailbox.