Bluetooth (RTM) communications system has Bluetooth (RTM) module for exchangeable insertion in hearing aids, car telephones and conference call modules

摘要

A Bluetooth (RTM) communications system has a Bluetooth (RTM) module that can be exchanged between a compatible hearing aid module with microphone, a car telephone module with loud speaker, microphone and echo cancellation circuits and a conference call module with voice amplifier and loud speaker driver circuits all to connected by the Bluetooth (RTM) module with telephones and Bluetooth (RTM) internet gateways.