Importance

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Abstract

A system combines a telephone answering device, or TAD, installed at each subscriber's premises and a voice mail center station. When IC memory is used as recording media of the TAD to record messages from a calling party, the memory becomes full to its capacity shortly, and the TAD cannot fulfill its function. To prevent this, a voice mail side is set to a message-receiving mode and an incoming message, or ICM, is transferred from the TAD side to the voice mail side by calling the voice mail side and receiving a particular signal from the TAD side. Then, the TAD restores its function and becomes capable of recording new ICMs. It was a common usage of the voice mail center that a calling party directly records ICMs in the voice mail center. In this system, however, an ICM stored in the voice mail center can be transferred to the TAD by controlling from the TAD as occasion demands, and the ICM can be stored in the TAD. This system makes possible a new combination wherein a TAD and a voice mail center, previously independent apparatuses, can control each other.

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First Claim