Data server

• US 20030220964A1
• Filed: 05/24/2002
• Published: 11/27/2003
• Est. Priority Date: 05/24/2002
• Status: Active Grant

• Current Assignee: Radisys Corporation (Reliance Industries Limited)
• Original Assignee: Radisys Canada Inc.
• Inventors: Geofroy, Paul Joseph, Sharratt, Brian Garland, Henderson, Grant William
• Granted Patent: US 7,124,163 B2
• Time in Patent Office: Days
• US Class Current: 709/203
• CPC Class Codes: H04L 65/103 in the network
• CPC Class Codes: H04L 65/1046 Call controllers; Call servers
• CPC Class Codes: H04L 65/1063 Application servers providing network services systems providing special services to telephonic subscribers H04M3/42
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A data server for use in networks in which media signals are transmitted as digital signals in packet form comprises at least one shelf having at least one card whose purposes are to provide a shelf controller function and a media processor function, together with a plurality of backplane buses. The data server accesses media signals in packet form. Distributed software is distributed in the cards on the shelf, and consists of a modular software architecture having a transport layer, a media processing layer, a session control layer, and a management plane which spans across the other layers. A plurality of digital signal processors has a plurality of dynamically changeable discrete software objects so as to process packets of media data. The management plane provisions and monitors the operations of said data server, and gives alarms in keeping with predetermined criteria. There is at least one connection interface to a packet network from which media signals in media form are received. The distributed software architecture media processing layer includes a software manager for initializing, coordinating, and controlling the plurality of discrete software objects embedded in the plurality of digital signal processors

Claims

1. A data server for use in networks in which media signals are transmitted as digital signals in packet form, wherein said media signals are chosen from the group consisting of packetized audio data, packetized video data, packetized control data, packetized information data, and combinations thereof, and wherein packets of media data are to be processed by said data server;

said data server comprising;

at least one shelf having at least one card thereon whose purposes are to provide a shelf controller function and a media processor function, and a plurality of inter-processor buses communicating with processors on said at least one card on said shelf;

wherein said shelf controller function provides access to control and management signals for distributed software which is distributed on said at least one card on said shelf, and said media processor function provides access to and processing of said media signals in packet form;

wherein said distributed software on said shelf consists of a modular software architecture having a transport layer, a media processing layer, a session control layer, and a management plane;

wherein said management plane spans across said transport layer, said media layer, and said session control layer;

wherein said at least one card contains a plurality of digital signal processors for said media processor function, said plurality of digital signal processors having a plurality of discrete software objects embedded therein so as to be adapted to process said packets of media data in keeping with said software objects;

wherein said plurality of discrete software objects are dynamically changeable under the control of said control and management signals;

wherein said management plane is adapted for provisioning and monitoring the operations of said data server, and to give alarms in keeping with predetermined criteria therefor;

wherein said distributed software architecture transport layer includes at least one connection interface to a packet network from which said media signals in media form are received, and to which media signals in packet form are sent; and

wherein said distributed software architecture media processing layer includes a software manager for initializing, coordinating, and controlling said plurality of discrete software objects embedded in said plurality of digital signal processors on said at least one card.

2. The data server of claim 1, wherein said shelf has one card thereon, wherein said one card serves both of said shelf controller function and said media processor function, wherein said one card has a plurality of processors thereon, and wherein communication among said plurality of processors is by way of said plurality of inter-processor buses.

3. The data server of claim 1, wherein there are a plurality of cards on said shelf, and wherein a plurality of inter-processor buses extend over a backplane as a plurality of backplane buses, so as to provide communication among said plurality of cards on said shelf.

4. The data server of claim 3, wherein said shelf has a shelf controller card and at least one media processor card thereon, and wherein said plurality of backplane buses communicates among all the cards on said shelf.

5. The data server of claim 4, wherein said distributed software is distributed among said cards on said shelf.

6. The data server of claim 5, wherein each said at least one media processor card contains a plurality of digital signal processors having a plurality of discrete software objects embedded therein.

7. The data server of claim 1, wherein said distributed software architecture transport layer further includes a network abstraction layer which is adapted to provide an interface to said media processing layer for any media packet data received by said data server from said packet network by said at least one connection interface thereto.

8. The data server of claim 3, wherein said distributed software architecture transport layer further includes a network abstraction layer which is adapted to provide an interface to said media processing layer for any media packet data received by said data server from said packet network by said at least one connection interface thereto.

9. The data server of claim 8, wherein there are a plurality of different connection interfaces to said packet network from said transport layer, whereby modularity is provided for a plurality of media packet data service providers employing differing data packet delivery protocols and systems.

10. The data server of claim 1, wherein said media processing layer further includes logical input and output ports for logic communication to and from each of said transport layer and said session control layer.

11. The data server of claim 3, wherein said media processing layer further includes logical input and output ports for logic communication to and from each of said transport layer and said session control layer.

12. The data server of claim 1, wherein said plurality of discrete software objects included in said media processing layer are chosen from the group consisting of:

protocol handler software objects, audio processing software objects, mixer control software objects, video service software objects, facsimile service software objects, audio streaming software objects, audio recording software objects, audio announce software objects, audio gain control software objects, automatic gain control software objects, audio event detector software objects, media data encoder/decoder software objects, audio generator software objects, data scrambling (IPsec) software objects, quality-of-service tagging software objects, and combinations thereof.

13. The data server of claim 3, wherein said plurality of discrete software objects included in said media processing layer are chosen from the group consisting of:

protocol handler software objects, audio processing software objects, mixer control software objects, video service software objects, facsimile service software objects, audio streaming software objects, audio recording software objects, audio announce software objects, audio gain control software objects, automatic gain control software objects, audio event detector software objects, media data encoder/decoder software objects, audio generator software objects, data scrambling (IPsec) software objects, quality-of-service tagging software objects, and combinations thereof.

14. The data server of claim 13, wherein said audio event detector software is chosen from the group consisting of DTMF detector and decoder software, VAD detector software, loudest speaker detector software, and combinations thereof.

15. The data server of claim 14, wherein said audio generator software objects are chosen from the group consisting of DTMF generators, algorithmic tone generators, CNG (comfort noise generation) generator software, audio streaming software objects, audio playback software objects, and combinations thereof.

16. The data server of claim 11, wherein said distributed software architecture session control layer includes a control sublayer and a session management and administration sublayer;

wherein said dialog control sublayer includes at least one control interface for said data server; and

wherein said session management and administration sublayer is adapted to control and manage the software resources of said distributed software architecture independently of the control protocol of the network for digital media signals being transmitted in packet form to which said data server is connected for receiving and processing said digital media signals.

17. The data server of claim 16, wherein said at least one control interface of said dialog control sublayer of said session control layer is adapted to be connected to a network for digital media signals being transmitted in packet form according to a controlled protocol chosen from the group of control protocols consisting of:

media gateway control protocol (MGCP), PacketCable™

NCS, PacketCable™

audio server, session initiation protocol (SIP), VoiceXML™

, SALT, MEGACO, ITU-T, H.248, and combinations and derivatives thereof.

18. The data server of claim 1, wherein said data server is configured as a media server which is adapted for use in networks within which audio data are sent in the form of digital media packets.

19. The data server of claim 3, wherein said data server is configured as a media server which is adapted for use in networks within which audio data are sent in the form of digital media packets.

20. The data server of claim 18, wherein said media server is connected to at least one of an external audio file server and an external speech recognition file server;

wherein said external audio file server stores and passes recorded audio files to and from said at least one media processor card, and said external speech recognition file server streams synthesized audio to and from said at least one media processor card.

21. The data server of claim 19, wherein said media server is connected to at least one of an external audio file server and an external speech recognition file server;

wherein said external audio file server stores and passes recorded audio files to and from said at least one media processor card, and said external speech recognition file server streams synthesized audio to and from said at least one media processor card.

22. The data server of claim 18, wherein said digital media packets are carried in a protocol chosen from the group consisting of:

Internet Protocol (IP), asynchronous transfer mode (ATM) protocol, Frame Relay protocol, and combinations thereof.

23. The data server of claim 19, wherein said digital media packets are carried in a protocol chosen from the group consisting of:

Internet Protocol (IP), asynchronous transfer mode (ATM) protocol, Frame Relay protocol, and combinations thereof.

24. The data server of claim 4, wherein a plurality of media processors cards are on said shelf.

25. The data server of claim 24, wherein said data server is configured as a media server which is adapted for use in networks within which audio data are sent in the form of digital media packets.

26. The data server of claim 24, further comprising at least two shelf controller cards, wherein at least a second shelf controller card functions as a backup shelf controller card for a first shelf controller card.

27. The data server of claim 25, wherein said data server is configured as a media server which is adapted for use in networks within which audio data are sent in the form of digital media packets.

28. The data server of claim 1, wherein said data server is configured as a media gateway which is adapted for use in networks within which audio data are sent in the form of digital media packets.

29. The data server of claim 3, wherein said data server is configured as a media gateway which is adapted for use in networks within which audio data are sent in the form of digital media packets.

30. The data server of claim 25, wherein said data server is configured as a media gateway which is adapted for use in networks within which audio data are sent in the form of digital media packets.

31. The data server of claim 30, wherein said data server is configured as a media server which is adapted for use in networks within which audio data are sent in the form of digital media packets.

32. The data server of claim 24, further comprising at least one further media processor card, wherein said at least one further media processor card functions as a backup media processor for any other one of said plurality of media processor cards.