Media Type Negotiation for Emergency Text Routing
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Solution Overview
Problem
Emergency call centers are unable to properly handle and recognize incoming text communications, as their systems are configured to only recognize audio media types, leading to rejection of text, picture, and video messages during session initiation.
Innovation Solution
Implementing a system with processors that relay messages between emergency calling devices and call centers, which includes a receiving component, negotiation component, transmission component, and establishing component to change the media type specification in session invitation and response messages, allowing text communications to be treated as audio media type for proper routing and handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the emergency call center system is configured to recognize only audio media types, then the system can properly handle voice calls, but it cannot recognize or handle text, picture, and video communications
Solution Approach 1:
A media type negotiation component is introduced as an intermediary between the calling device and the emergency call center. This component translates text, picture, and video communication media types into audio media type specifications during session initiation, allowing the existing audio-only call center system to accept and properly route these communications without modification to the core handling system.
Solution Approach 2:
The system changes the media type parameter in session invitation and response messages during the negotiation phase. By converting non-audio media types to audio media type parameters, the system enables compatibility with existing audio-based emergency call center infrastructure while maintaining support for multiple communication modalities.
2Ease of manufacture
If the emergency call center uses existing audio-based protocols for session initiation, then the infrastructure remains unchanged, but text communications are rejected as unrecognizable media types
Solution Approach 1:
The media type negotiation component performs preliminary translation of media types during the session initiation phase, before the actual communication begins. By converting text, picture, and video media types to audio media type specifications in advance, the system ensures that the existing audio-based call center infrastructure receives properly formatted requests that it can handle without modification.
Solution Approach 2:
The negotiation component acts as an intermediary that interfaces between the multi-media calling device and the audio-only call center system. It translates and adapts the media type specifications during the SIP INVITE and response message exchange, enabling text communications to be routed through the existing audio infrastructure without requiring changes to the call center's core systems.
3Reliability
If text communications are treated as audio media type during session initiation, then the call center can properly route and handle them, but the original text media type information is modified
Solution Approach 1:
The media type negotiation component serves as an intermediary that temporarily translates media type information during session initiation. It converts the original text media type into an audio media type representation for the purpose of establishing the communication session with the call center, ensuring proper routing and handling while maintaining the ability to convey the original text content through the established session.
Data Source
AI summary
Systems and methods for establishing text communication sessions between wireless mobile devices and emergency call centers are presented herein. The text communications may be established by effectuating changes to a media type specified in session invitation messages, response messages, and/or other messages that are relayed between a given wireless mobile device and an emergency call center.