High availability voice over internet protocol telephony

• US 10,652,305 B2
• Filed: 08/17/2018
• Issued: 05/12/2020
• Est. Priority Date: 08/17/2018
• Status: Active Grant

• Current Assignee: PrimeVOX Communications, LLC
• Original Assignee: PrimeVOX Communications, LLC
• Inventors: Escude, Luke, Hull, Jared
• Primary Examiner(s): Renner, Brandon M
• Application Number:
  US16/104,741
• Publication Number:
  US 20200059508A1
• Time in Patent Office: 634 Days
• Field of Search: None
• CPC Class Codes: H04L 65/104 in the network
• CPC Class Codes: H04L 65/1045 Proxies, e.g. for session initiation protocol [SIP]
• CPC Class Codes: H04L 65/1053 IP private branch exchange [PBX] functionality entities or arrangements circuit switched PBXs H04M3/00
• CPC Class Codes: H04L 65/1059 End-user terminal functionalities specially adapted for real-time communication
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/1095 Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
• CPC Class Codes: H04M 7/124 where PSTN/ISDN interconnects two networks other than PSTN/ISDN

Abstract

The present invention is directed to processes and systems for high availability Voice Over Internet Protocol telephony. Exemplary embodiments comprise a VOIP proxy cluster in communication with an IP private branch exchange cluster in communication with a PSTN VOIP gateway cluster, all at a first call cluster locale. In exemplary configuration, nodes within each of the clusters mount a database node from the database cluster, and store and retrieve persistent telephony operation data within the database cluster. Embodiments employ the clustering mechanisms to separate telephony elements in a cluster to cluster topology. In exemplary usage, multiple physically separate call cluster locales are deployed for higher availability.

Claims

1. A system for voice over internet protocol (VOIP) to public switched telephone network (PSTN) at a call locale, said system comprising:

a VOIP proxy cluster in communication with a IP private branch exchange (PBX) cluster in communication with a PSTN VOIP gateway cluster;

a database cluster, said database cluster comprised of a plurality of database nodes operable to store and retrieve state of telephony operations, said database nodes in communication with each other over an applied cluster mechanism;

said VOIP proxy cluster comprised of a plurality of VOIP proxy nodes, each VOIP proxy node being an instance operable to proxy telephony from VOIP telephones, said VOIP proxy nodes in communication with each other and a clustering mechanism applied to said VOIP proxy cluster, replicating VOIP proxy node data, including at least one of telephony device data and VOIP session data, in each of said VOIP proxy nodes across said VOIP proxy nodes in said VOIP proxy cluster;

said PBX cluster comprised of a plurality of IP PBX nodes, each PBX node being an instance operable to act as central switching system for telephony within said call locale, said PBX nodes in communication with each other and a clustering mechanism applied to said PBX node cluster, replicating PBX node data, including call locale telephony data in each of said PBX nodes across said PBX nodes in said PBX cluster; and

said PSTN VOIP gateway cluster comprised of a plurality of PSTN VOIP gateway nodes, each PSTN VOIP gateway node being an instance operable to bridge VOIP telephony at said call locale to PSTN telephony, said PSTN VOIP gateway nodes are in communication with each other and a clustering mechanism applied to said PSTN VOIP gateway cluster, replicating the PSTN VOIP gateway node data, including at least one of carrier telephone number data and carrier routing data, in each of said PSTN VOIP gateway nodes across said PSTN VOIP gateway node in said PSTN VOIP gateway cluster.

2. The system of claim 1, wherein said VOIP proxy nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster.

3. The system of claim 1, wherein said PBX nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster.

4. The system of claim 1, wherein said PSTN VOIP gateway nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster.

5. The system of claim 1, wherein said VOIP proxy nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster;

wherein said PSTN VOIP gateway nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster; and

wherein said PSTN VOIP gateway nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster.

6. The system of claim 1, wherein a network address translation boundary is applied across said PSTN VOIP gateway cluster, said PSTN VOIP gateway node having first network interface for communication with said PBX cluster and a second network interface for communication with PSTN carriers.

7. The system of claim 1, wherein a network address translation boundary is applied across said SIP proxy cluster, said SIP proxy cluster nodes having first network interface for communication with said PBX cluster and a second network interface for communication with said telephones;

and

wherein a network address translation boundary is applied across said PSTN VOIP gateway cluster, said PSTN VOIP gateway node having first network interface for communication with said PBX cluster and a second network interface for communication with PSTN carriers.

8. The system of claim 7, wherein said PSTN VOIP gateway nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster.

9. The system of claim 7, wherein said VOIP proxy nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster.

10. The system of claim 7, wherein said VOIP proxy nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster;

wherein said PSTN VOIP gateway nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster; and

wherein said PSTN VOIP gateway nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster.

11. A process for voice over internet protocol (VOIP) to public switched telephone network (PSTN) at a call locale, said process comprising the steps of:

creating a database cluster, said database cluster comprised of a plurality of database nodes operable to store and retrieve state of telephony operations, said database nodes in communication with each other over an applied cluster mechanism;

creating a VOIP proxy cluster comprised of a plurality of VOIP proxy nodes, each VOIP proxy node being an instance operable to proxy telephony from VOIP telephones, said VOIP proxy nodes in communication with each other and a clustering mechanism applied to said VOIP proxy cluster, replicating VOIP proxy node data, including at least one of telephony device data and VOIP session data, in each of said VOIP proxy nodes across said VOIP proxy nodes in said VOIP proxy cluster;

creating a PBX cluster comprised of a plurality of IP PBX nodes, each PBX node being an instance operable to act as central switching system for telephony within said call locale, said PBX nodes in communication with each other and a clustering mechanism applied to said PBX node cluster, replicating PBX node data, including call locale telephony data, in each of said PBX nodes across said PBX nodes in said PBX cluster; and

creating a PSTN VOIP gateway cluster comprised of a plurality of PSTN VOIP gateway nodes, each PSTN VOIP gateway node being an instance operable to bridge VOIP telephony at said call locale to PSTN telephony, said PSTN VOP gateway nodes are in communication with each other and a clustering mechanism applied to said PSTN VOIP gateway cluster, replicating PSTN VOIP gateway node data, including at least one of carrier telephone number data and carrier routing data, in each of said PSTN VOIP gateway nodes across said PSTN VOIP gateway node in said PSTN VOIP gateway cluster; and

placing said VOIP proxy cluster in communication with a IP private branch exchange (PBX) cluster in communication with a PSTN VOIP gateway cluster.

12. The process of claim 11, wherein said VOIP proxy nodes are configured to mount one or more database nodes from said database cluster, and store persistent telephony data from said database cluster.

13. The process of claim 11, wherein said VOIP proxy nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster;

wherein said PSTN VOIP gateway nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster; and

wherein said PSTN VOIP gateway nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster.

14. The process of claim 11, further providing a list of address records of said VOIP proxy nodes within said VOIP proxy cluster for transmission to said telephone.

15. The process of claim 11, further providing a list of address records of said PSTN VOIP gateway nodes within said PSTN VOIP gateway cluster for transmission to said carriers.

16. The process of claim 11, wherein a network address translation boundary is applied across said SIP proxy cluster, said SIP proxy cluster nodes having first network interface for communication with said PBX cluster and a second network interface for communication with said telephones;

and

wherein a network address translation boundary is applied across said PSTN VOIP gateway cluster, said PSTN VOIP gateway node having first network interface for communication with said PBX cluster and a second network interface for communication with PSTN carriers.

17. The process of claim 16, wherein said VOIP proxy nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster;

wherein said PSTN VOIP gateway nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster; and

wherein said PSTN VOIP gateway nodes are configured to mount one or more database nodes from said database cluster, and store and retrieve persistent telephony data from said database cluster.

18. The process of claim 16, further providing network address translation records of said network boundary of said VOIP proxy cluster to said PBX cluster.

19. The process of claim 18, wherein one of said PBX nodes within said PBX cluster polling the VOIP proxy cluster in said network address translation records for an unresponsive VOIP proxy node.

20. The process of claim 19, wherein in response to unresponsive VOIP proxy node, that node is destroyed, a new VOIP proxy node, state retrieved from the VOIP proxy cluster for said new proxy node, and its new address information added to the network address table.