Innomedia Pte Ltd.

Jianmin Wu

Shih-An Cheng

Chen-Huei Chang

Huang-Ming Pan

A media gateway control protocol (MGCP) proxy server interfaces between a plurality of MGCP gateways and at least one MGCP call agent which may be coupled to a private network and served by a network address translation firewall. The proxy server comprises a private network interface for communicating over a private network with the call agent and a public network interface for communicating over the Internet. A translation module provides for receiving an MGCP message generated by a gateway and addressed to the public network interface. The MGCP message includes a message transaction ID assigned by the gateway and an endpoint ID identifying the gateway. The endpoint ID comprises a local endpoint name and a domain. The translation module translating the MGCP message to create a translated message by: i) substituting a unique transaction ID in place of the message transaction ID; and ii) substituting a private IP address assigned to a private network interface in place of the domain of the endpoint ID of the MGCP message. The translation module: i) provides the translated message to the private network interface for sending to the call agent; ii) writes each of the unique transaction ID and the message transaction ID to a record of a gateway request map; and iii) writes the public socket on which the message was received from the gateway to a record associated with the MGCP gateway in a registration map and updates an indication of a predetermined time window during which the public socket is valid to a time period following receipt of the MGCP message.

Firewall proxy system and method

A system and method for providing a Voice-over-Internet Protocol (VoIP) system is disclosed. The VoIP system includes a network including at least two VoIP proxy servers configured to allow voice data to be transmitted and received over the network. The VoIP system also includes at least one VoIP client operatively coupled to the network to transmit and receive voice data over the network wherein the at least one VoIP client connects to one of the at least two VoIP proxy servers which has a lower workload in order to transmit and receive voice data; and a network connection coupled to the at least two VoIP proxy servers for sharing workload data therebetween and the workload data is used to determine which of the at least two VoIP proxy servers the at least one VoIP client connects to in order to transmit and receive voice data.

Method and system for an intelligent proxy server for workload balancing by workload shifting

A system and method for providing a Voice-over Internet Protocol (VoIP) system is disclosed. The VoIP system includes a network including at least two VoIP proxy servers configured to allow voice data to be transmitted and received over the network. The VoIP system also includes at least one VoIP client operatively coupled to the network to transmit and receive voice data over the network and a load monitor device configured to monitor workload on the at least two VoIP proxy servers and determine an identity of the VoIP proxy server with a lowest workload. The load monitor device is also configured to provide the identity of the VoIP proxy server with the lowest workload to the at least one VoIP client so that the at least one VoIP client can connect to the VoIP proxy server with the lowest workload to transmit and receive voice data.

Method and system for connecting to a proxy server with the lowest workload through querying a load monitor

A system and method for providing a Voice-over-Internet Protocol (VoIP) system is disclosed. The VoIP system includes a network including at least two VoIP proxy servers configured to shift workload automatically and to allow voice data to be transmitted and received over the network and at least one VoIP client operatively is coupled to the network to transmit and receive voice data over the network.

Growing community of inventors

San Jose, CA, United States of America

Jianmin Wu