Call Processing Apparatus for Emergency Number Conversion

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Solution Overview

Problem

Emergency services are not notified of land line telephone numbers and addresses when emergency calls are made using IP telephone services with wireless access lines, as they are only informed of mobile object positional information and telephone numbers.

Innovation Solution

A call processing device with a conversion unit that converts the caller number of an emergency call from a wireless access line into a land line telephone number, a connection unit that connects the call to emergency services, and a notification unit that acquires and notifies the land line telephone address to emergency services.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If IP telephone services with wireless access lines are used for emergency calls, then mobile object positional information and telephone numbers can be notified to emergency services, but land line telephone numbers and addresses cannot be notified

Engineering Contradiction:

Improvecompatibility with wireless access linesVSAvoidland line telephone number and address information

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The call processing device acts as an intermediary between the terminal accommodation device and the emergency service. It receives the emergency call with mobile number, converts it to the corresponding land line telephone number using conversion tables, and forwards the converted number along with address information to the emergency service, thereby bridging the information gap without requiring changes to existing wireless access infrastructure

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

Conversion tables mapping mobile numbers to land line telephone numbers are pre-prepared and stored in the call processing device before emergency calls occur. This preliminary preparation enables rapid number conversion during emergencies without requiring real-time lookup or complex processing, ensuring that land line number information is immediately available when needed

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11838439B2Call processing apparatus, origination number converting method, and origination number converting program

Publication Date: 2023.12.05 NIPPON TELEGRAPH & TELEPHONE CORP

AI summary

A call processing device includes: a conversion unit configured to convert a caller number of an emergency call sent from a terminal accommodation device via a wireless access line into a land line telephone number of a terminal accommodated by the terminal accommodation device; a connection unit configured to connect the emergency call with the converted caller number to an emergency service; and a notification unit configured to acquire an address corresponding to the land line telephone number and notify the emergency service of the address.