SIP Phone Video Add-on Intermediary
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Solution Overview
Problem
Existing SIP-based audio-only phones require replacement to support video conferencing capabilities, and existing solutions necessitate private communication and coordination between devices, which is inefficient and costly.
Innovation Solution
An add-on device is introduced to existing SIP audio-only phones, acting as a transparent intermediary that augments SIP messages with video attributes, allowing the phones to support full audio/video conferencing without replacing existing hardware and without requiring special data connections or updates, and can also support features like camera control and room control for H.323 devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing SIP audio-only phones are replaced to support video conferencing, then video capability is improved, but device complexity and cost increase
Solution Approach 1:
An add-on device is introduced as an intermediary component that connects to the existing SIP audio-only phone and provides video conferencing capabilities. The add-on device includes a video camera, speaker, microphone, and processing unit that augments the existing phone's functionality without requiring replacement of the original device. This intermediary approach allows legacy phones to gain video capability while maintaining their original audio-only functionality.
Solution Approach 2:
The add-on device is designed to provide multiple functions including video capture, audio processing, camera control, and room control capabilities. It can work with both SIP and H.323 protocols and supports various video codecs (H.264, H.263, MPEG-4) and audio codecs (G.711, G.729, iLBC), making it a universal solution that enhances different types of existing phones without requiring device-specific modifications.
2Adaptability or versatility
If existing SIP phones are upgraded with video capability, then adaptability is improved, but infrastructure changes are worsened
Solution Approach 1:
The add-on device serves as a standalone intermediary that interfaces between the existing SIP phone and the video conferencing system. It maintains compatibility with standard SIP protocols and can operate with existing network infrastructure, including standard SIP proxies and video conferencing servers. The device includes built-in processing capabilities that handle video encoding, audio processing, and protocol conversion locally, reducing the need for complex infrastructure modifications.
Solution Approach 2:
The system supports multiple video codecs (H.264, H.263, MPEG-4) and audio codecs (G.711, G.729, iLBC) with adjustable parameters for video resolution, frame rate, and audio sampling rates. These parameter changes allow the add-on device to adapt to different network conditions and conferencing requirements without requiring infrastructure changes. The device can dynamically adjust codec selection and quality parameters based on available bandwidth and conference participant capabilities.
3Ease of operation
If private communication and coordination between devices is implemented, then device functionality is improved, but system complexity worsens
Solution Approach 1:
The add-on device acts as a unified intermediary that consolidates all video and audio processing functions in a single unit. It interfaces with the existing SIP phone through standard audio jack connections and communicates with the conferencing system using standard SIP protocols. The device includes an integrated processing unit that handles camera control, audio mixing, video encoding, and protocol conversion, eliminating the need for complex private communication and coordination between multiple separate devices.
Solution Approach 2:
The add-on device merges video camera, speaker, microphone, processing unit, and control interfaces into a single integrated unit that connects to the existing SIP phone. This consolidation combines multiple functions that would otherwise require separate devices with complex inter-device communication into one unified add-on that simplifies the overall system architecture and reduces communication protocol complexity.
Data Source
AI summary
Systems and methods of configuring an add-on device to augment the capability of existing endpoint infrastructure are disclosed. In one embodiment, a video add-on device is configured to receive, augment or downgrade, and forward messages for an existing SIP audio-only phone. The video add-on device in this embodiment can receive messages from the existing SIP audio-only phone and augment the messages with information regarding the additional video capabilities being provided. The messages can then be forwarded to an infrastructure SIP Proxy/Registrar for further routing. From the perspective of the infrastructure SIP Proxy/Registrar and other network attached devices the outbound messages from the video add-on device appear as if they originated from the video add-on device, other devices will not be directly aware of the existing SIP audio phone providing its designed function. Utilizing devices similar to the disclosed video add-on device may allow incremental corporate network endpoint upgrades.