Abstract: Methods and apparatuses, including computer program products, are described for preservation of communication sessions in a geographically redundant cloud-based environment. The system comprises a plurality of end point devices and a plurality of cloud-based system instances, each comprising one or more server computing devices. A first cloud-based system instance assigned a first physical address is configured to establish a communication session using the first physical address between a first end point device and a second end point device, and mirror information associated with the communication session to a second cloud-based system instance assigned a second physical address.

Abstract: Methods and apparatuses, including computer program products, are described for preservation of communication sessions in a geographically redundant cloud-based environment. The system comprises a plurality of end point devices and a plurality of cloud-based system instances, each comprising one or more server computing devices. A first cloud-based system instance assigned a first physical address is configured to establish a communication session using the first physical address between a first end point device and a second end point device, and mirror information associated with the communication session to a second cloud-based system instance assigned a second physical address.

Abstract: Methods and apparatuses, including computer program products, are described for establishing and controlling communication sessions between SIP devices and website application servers. An access portal computing device is coupled between one or more SIP devices and one or more website application servers. The access portal is configured to authenticate SIP user credentials based upon receipt of a SIP message from a SIP device and determine website user credentials associated with a website application server based on the SIP user credentials. The access portal is configured to receive, from the website application server, a communication services application based upon transmission of the website credentials to the website application server, translate SIP requests received from the SIP device into web-based commands for transmission to the website application server, and translate web-based commands received from the website application server into SIP requests for transmission to the SIP device.

Abstract: A method for controlling session access within a network license zone (NLZ) includes receiving periodically, by the first network node, a first network access message from a second network node within the NLZ. The first network access message includes a number of active sessions enumerated by service type currently processed by the second network node. The method further includes determining, by the first network node, a first summation of active sessions within the NLZ based in part on the first network access message and a number of active sessions currently processed by the first network node. The method further includes enforcing, by the first network node, a total number of active sessions within NLZ. The first network node is configured to reject new session requests received at the first network node when the total number of active sessions within the NLZ exceeds a predetermined number of active sessions.