System for video call processing

A non-transitory computer-readable storage medium, comprising computer instructions which when executed by a processor cause the processor to perform operations comprising:

• facilitating establishing a circuit-switched communication session with a second communication device according to a public switched telephone network number;
• presenting a notice indicating the second communication device is video capable, wherein the notice is presented by way of a user interface of a first communication device during the circuit-switched communication session in response to determining the second communication device is video capable;
• receiving a request to establish video communications with the second communication device, wherein the request is received by way of input detected by way of the user interface;
• submitting the request to a network management system for obtaining communication capabilities of the second communication device without the network management system receiving capability information from the second communication device, wherein the request comprises the public switched telephone network number;
• in response to receiving the request, initiating a transition to a video internet protocol communication session with the second communication device while the circuit-switched communication session is active between the first and second communication devices;
• and
• terminating the circuit-switched communication session responsive to the video internet protocol communication session being established, wherein the video internet protocol communication session comprises an exchange of a video stream and an audio stream conforming to a real-time protocol,
• wherein the network, management system comprises a server operating in an internet protocol multimedia subsystem that retrieves device information including video capability associated with the second communication device from a home subscriber server of the internet protocol multimedia subsystem.

A network management system, comprising:

• a memory to store computer instructions;
• and
• a controller element coupled with the memory, wherein the controller element when executing the computer instructions performs operations comprising:
• receiving a first request from a first communication device to determine whether a second communication device actively engaged in a circuit-switched voice communication session with the first communication device is capable of engaging in a video internet protocol communication session, wherein the first request comprises a public switched telephone network number to identify the second communication device;
• determining communication capabilities of the second communication device without obtaining capability information from the second communication device;
• facilitating establishing of the video internet protocol communication session between the first and second communication devices responsive to receiving from the first communication device a second request to establish the video internet protocol communication session with the second communication device without receiving another request from the second communication device to establish the video internet protocol communication session with the first communication device, wherein the second request to establish the video internet protocol communication session is based on user input detected at a user interface of the first communication device during the circuit-switched voice communication session and in response to a determination that the second communication device is video capable;
• and
• terminating the circuit-switched communication session responsive to the video internet protocol communication session being established, wherein the video internet protocol communication session comprises an exchange of a video stream and an audio stream conforming to a real-time protocol,
• wherein the network, management system comprises a server operating in an internet protocol multimedia subsystem that retrieves device information including video capability associated with the second communication device from a home subscriber server of the internet protocol multimedia subsystem.