Abstract: Techniques are provided for establishing a Unified Communications (UC) session between a client endpoint device and remote endpoint devices, the client endpoint device managing the session using a first-party call control protocol in response to commands from a third-party control protocol and user input. A hosted virtual desktop (HVD) generates an HVD image and communicates it to the client endpoint device for display, via a virtual desktop interface (VDI) protocol. The HVD image comprises a UC user interface generated by a UC application on the HVD, the user interface comprising at least one user interface element and at least one placeholder where a client-provided user interface element may be inserted. A client UC application receives the HVD image and inserts client-provided user interface elements over the placeholders before sending the integrated image to a client operating system to be rendered on the display of client endpoint device.

Abstract: Techniques are provided for establishing a Unified Communications (UC) session between a client endpoint device and remote endpoint devices, the client endpoint device managing the session using a first-party call control protocol in response to commands from a third-party control protocol and user input. A hosted virtual desktop (HVD) generates an HVD image and communicates it to the client endpoint device for display, via a virtual desktop interface (VDI) protocol. The HVD image comprises a UC user interface generated by a UC application on the HVD, the user interface comprising at least one user interface element and at least one placeholder where a client-provided user interface element may be inserted. A client UC application receives the HVD image and inserts client-provided user interface elements over the placeholders before sending the integrated image to a client operating system to be rendered on the display of client endpoint device.

Abstract: Techniques are provided for establishing a Unified Communications (UC) session between a client endpoint device and remote endpoint devices, the client endpoint device managing the session using a first-party call control protocol in response to commands from a third-party control protocol and user input. A hosted virtual desktop (HVD) generates an HVD image and communicates it to the client endpoint device for display, via a virtual desktop interface (VDI) protocol. The HVD image comprises a UC user interface generated by a UC application on the HVD, the user interface comprising at least one user interface element and at least one placeholder where a client-provided user interface element may be inserted. A client UC application receives the HVD image and inserts client-provided user interface elements over the placeholders before sending the integrated image to a client operating system to be rendered on the display of client endpoint device.

Abstract: Techniques are provided for establishing a Virtual Desktop Interface (VDI) connection at a virtual desktop thin client (VDTC) device, between a VDI client in the VDTC device and a VDI server in a hosted virtual desktop server (HVDS). A unified communications (UC) control connection is established between a UC protocol stack on the VDTC device and a primary call agent, where the UC control connection is configured to allow the UC protocol stack to register with the primary call agent, and to send or receive commands from the primary call agent that are based on signals from a UC control application running on the HVDS. A UC control backup application is started on the virtual desktop thin client device in a standby mode that is configured to switch to an active mode in response to a failure to establish or maintain the UC control connection, or a failure to establish or maintain the VDI connection.

Abstract: Techniques are provided for establishing a Virtual Desktop Interface (VDI) connection at a virtual desktop thin client (VDTC) device, between a VDI client in the VDTC device and a VDI server in a hosted virtual desktop server (HVDS). A unified communications (UC) control connection is established between a UC protocol stack on the VDTC device and a primary call agent, where the UC control connection is configured to allow the UC protocol stack to register with the primary call agent, and to send or receive commands from the primary call agent that are based on signals from a UC control application running on the HVDS. A UC control backup application is started on the virtual desktop thin client device in a standby mode that is configured to switch to an active mode in response to a failure to establish or maintain the UC control connection, or a failure to establish or maintain the VDI connection.