Call flow system and method use in VoIP telecommunication system

• US 7,873,032 B2
• Filed: 08/24/2006
• Issued: 01/18/2011
• Est. Priority Date: 03/02/2006
• Status: Active Grant

• Current Assignee: Tango Networks Incorporated
• Original Assignee: Tango Networks Incorporated
• Inventors: Lewis, Lathan, Silver, Andrew, Landgren, Patricia
• Primary Examiner(s): KING, SIMON
• Assistant Examiner(s): King; Simon
• Application Number:
  US11/509,260
• Publication Number:
  US 20070206580A1
• Time in Patent Office: 1,608 Days
• Field of Search: 370/331, 370/352, 370/467, 370/353, 379/229, 455/445, 455/554.1, 455/414.1
• US Class Current: 370/353
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04L 65/00 Network arrangements, protocols or services for supporting real-time applications in data packet communication real-time or near real-time messaging, e.g. instant messaging [IM] H04L51/04; selective video distribution H04N21/00
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/102 Gateways arrangements for connecting between networks having differing types of switching systems, e.g. gateways, H04L12/66
• CPC Class Codes: H04L 65/1023 Media gateways
• CPC Class Codes: H04L 65/1033 Signalling gateways
• CPC Class Codes: H04L 65/104 in the network
• CPC Class Codes: H04L 65/1053 IP private branch exchange [PBX] functionality entities or arrangements circuit switched PBXs H04M3/00
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1076 Screening of IP real time communications, e.g. spam over Internet telephony [SPIT]
• CPC Class Codes: H04L 65/1095 Inter-network session transfer or sharing
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 65/1106 Call signalling protocols; H.323 and related
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 67/56 Provisioning of proxy services store-and-forward switching systems in data switching networks H04L12/54
• CPC Class Codes: H04M 15/00 Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
• CPC Class Codes: H04M 15/57 for integrated multimedia messaging subsystem [IMS]
• CPC Class Codes: H04M 15/63 based on the content carried by the session initiation protocol [SIP] messages
• CPC Class Codes: H04M 15/8292 Charging for signaling or unsuccessful connection
• CPC Class Codes: H04M 2203/1091 Fixed mobile conversion
• CPC Class Codes: H04M 2215/208 : IMS, i.e. Integrated Multimedia messaging Subsystem
• CPC Class Codes: H04M 3/42042 : Notifying the called party of information on the calling party details within substation equipment H04M1/57, signalling details H04Q3/72
• CPC Class Codes: H04M 3/42068 : where the identifier is used to access a profile
• CPC Class Codes: H04M 3/42102 : Making use of the called party identifier
• CPC Class Codes: H04M 3/42314 : in private branch exchanges
• 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
• CPC Class Codes: H04M 7/009 : in systems involving PBX or KTS networks
• CPC Class Codes: H04Q 2213/13034 : A/D conversion, code compression/expansion
• CPC Class Codes: H04Q 2213/1307 : Call setup
• CPC Class Codes: H04Q 2213/13091 : CLI, identification of calling line
• CPC Class Codes: H04Q 2213/13098 : Mobile subscriber
• CPC Class Codes: H04Q 2213/13109 : Initializing, personal profile
• CPC Class Codes: H04Q 2213/13176 : Common channel signaling, CCS7
• CPC Class Codes: H04Q 2213/1318 : Ringing
• CPC Class Codes: H04Q 2213/13196 : Connection circuit/link/trunk/junction, bridge, router, gateway
• CPC Class Codes: H04Q 2213/13204 : Protocols
• CPC Class Codes: H04Q 2213/1322 : PBX
• CPC Class Codes: H04Q 2213/13224 : Off-net subscriber, dial in to/out from network, teleworking
• CPC Class Codes: H04Q 2213/13296 : Packet switching, X.25, frame relay
• CPC Class Codes: H04Q 2213/13348 : Channel/line reservation
• CPC Class Codes: H04Q 2213/13384 : Inter-PBX traffic, PBX networks, e.g. corporate networks
• CPC Class Codes: H04Q 2213/13389 : LAN, internet
• CPC Class Codes: H04Q 2213/13405 : Dual frequency signaling, DTMF
• CPC Class Codes: H04Q 2213/13407 : Detection of data transmission mode
• CPC Class Codes: H04Q 3/0025 : Provisions for signalling
• CPC Class Codes: H04Q 3/0045 : involving hybrid, i.e. a mixture of public and private, or multi-vendor systems
• CPC Class Codes: H04Q 3/62 : for connecting to private branch exchanges
• CPC Class Codes: H04Q 3/72 : Finding out and indicating number of calling subscriber
• CPC Class Codes: H04W 28/0289 : Congestion control load shedding arrangements in network planning H04W16/08; performing reselection for handling the traffic H04W36/22; wireless traffic scheduling H04W72/12
• CPC Class Codes: H04W 4/16 : Communication-related supplementary services, e.g. call-transfer or call-hold
• CPC Class Codes: H04W 4/20 : Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
• CPC Class Codes: H04W 40/00 : Communication routing or communication path finding
• CPC Class Codes: H04W 40/02 : Communication route or path selection, e.g. power-based or shortest path routing
• CPC Class Codes: H04W 40/22 : using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
• CPC Class Codes: H04W 40/30 : for proactive routing
• CPC Class Codes: H04W 76/10 : Connection setup
• CPC Class Codes: H04W 76/12 : Setup of transport tunnels
• CPC Class Codes: H04W 76/19 : Connection re-establishment
• CPC Class Codes: H04W 76/20 : Manipulation of established connections
• CPC Class Codes: H04W 76/22 : Manipulation of transport tunnels
• CPC Class Codes: H04W 76/28 : Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 76/30 : Connection release
• CPC Class Codes: H04W 8/12 : between location registers or mobility servers
• CPC Class Codes: H04W 8/26 : Network addressing or numbering for mobility support
• CPC Class Codes: H04W 80/00 : Wireless network protocols or protocol adaptations to wireless operation
• CPC Class Codes: H04W 84/16 : WPBX [Wireless Private Branch Exchange]
• CPC Class Codes: H04W 88/16 : Gateway arrangements
• CPC Class Codes: H04W 92/02 : Inter-networking arrangements
• CPC Class Codes: H04W 92/06 : between gateways and public network devices
• CPC Class Codes: H05K 999/99 : dummy group

Abstract

A method of establishing a communication link between a mobile terminal of a wireless network and a subscriber of a network, such as an enterprise network, and/or a residential network.

Claims

1. A method for processing a Voice over Internet Protocol call in a communication network, comprising:

receiving, by a private branch exchange situated in an enterprise network, a call origination request of a call destined to a member having a mobile station and a deskphone within the enterprise network;

delivering, by the private branch exchange, a first call invite message to an enterprise gateway server situated in the enterprise network;

delivering, by the private branch exchange, a second call invite message to the deskphone;

allocating, by the enterprise gateway server, a media port for insertion into a call path allocated for the call;

forwarding, by the enterprise gateway server, the first call invite message to a carrier gateway server situated in a mobile carrier network;

establishing a secure tunnel between the enterprise gateway server and the carrier gateway server; and

sending secure encrypted data via the established secure tunnel.

2. The method of claim 1, further comprising performing, by the carrier gateway server, a location request.

3. The method of claim 2, further comprising receiving, by the enterprise gateway server, a temporary routing number required to deliver the call to the mobile station.

4. The method of claim 3, further comprising forwarding, by the carrier gateway server, the temporary routing number to the enterprise gateway server.

5. The method of claim 4, further comprising routing, by the enterprise gateway server, the call to the temporary routing number.

6. The method of claim 5, further comprising receiving, by the enterprise gateway server, an indication that the mobile station is ringing.

7. The method of claim 6, further comprising notifying, by the enterprise gateway server, the private branch exchange that the mobile station is ringing.

8. The method of claim 7, further comprising:

receiving, by the enterprise gateway server, an indication that the call has been answered at the mobile station; and

notifying, by the enterprise gateway server, the private branch exchange that the call has been answered at the mobile station.

9. The method of claim 8, further comprising cancelling, by the private branch exchange, a call leg associated with the second call invite message to the deskphone.

10. The method of claim 1, further comprising receiving, by the carrier gateway server, a termination trigger indicating that a call has been terminated to a mobile number of a second mobile station of an enterprise network member.

11. The method of claim 10, further comprising:

issuing, by the carrier gateway server, a request to the enterprise gateway server for a termination policy; and

receiving, by the carrier gateway server, the termination policy.

12. The method of claim 11, further comprising rerouting, by the carrier gateway server, the call into the enterprise network for call handling.

13. A system for processing a Voice over Internet Protocol call in a communication network, the system comprising:

an enterprise network including an enterprise gateway server and a private branch exchange coupled with the enterprise gateway server;

a cellular network including a carrier gateway server coupled with the enterprise gateway server,

wherein the private branch exchange receives a call origination request of a call destined to a member associated with the enterprise network,

wherein the member is assigned a deskphone and a mobile station,

wherein the private branch exchange delivers a first call invite message to the enterprise gateway server delivers a second call invite message to the deskphone, and

wherein the enterprise gateway server allocates a media port for insertion into a call path allocated for the call,

the enterprise gateway server forwards the first call invite message to the carrier gateway server;

a secure tunnel establishes between the enterprise gateway server and the carrier gateway server; and

a secure encrypted data sent via the established secure tunnel.

14. The system of claim 13, wherein the carrier gateway server performs a location request.

15. The system of claim 14, wherein the enterprise gateway server receives a temporary routing number required to deliver the call to the mobile station.

16. The system of claim 15, wherein the carrier gateway server forwards the temporary routing number to the enterprise gateway server.

17. The system of claim 16, wherein the enterprise gateway server routes the call to the temporary routing number.

18. The system of claim 17, wherein the enterprise gateway server receives an indication that the mobile station is ringing.

19. The system of claim 18, wherein the enterprise gateway server notifies the private branch exchange that the mobile station is ringing.

20. The system of claim 19, wherein the enterprise gateway server receives an indication that the call has been answered at the mobile station and notifies the private branch exchange that the call has been answered at the mobile station.

21. The system of claim 20, wherein the private branch exchange cancels a call leg associated with the second call invite message to the deskphone.

22. The system of claim 13, wherein the carrier gateway server receives a termination trigger indicating that a call has been terminated to a mobile number of a second mobile station of an enterprise network member.

23. The system of claim 22, wherein the carrier gateway server issues a request to the enterprise gateway server for a termination policy and receives the termination policy from the enterprise gateway server.

24. The system of claim 23, wherein the carrier gateway server reroutes the call into the enterprise network for call handling.