Mobile telephone system having message recording mode during fai

Details Mobile telephone system having message recording mode during fai Mobile telephone system having message recording mode during fai

1990-08-07

1992-04-14

Dwyer, James L.

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 67, H04M 1100

Patent

active

051054582

ABSTRACT:
In a mobile telephone system, a base station establishes a radio link to a mobile station and a connection to a swtiched telephone network when the mobile station is in communication with a network-side station. The base station constantly monitors signals from the mobile station over the radio link. If it detects that the radio link is failing during a communication, an announcement is transmitted to the network-side station. A recording/playback apparatus is then operated to record a message from the network-side station. The base station further includes a ringing detector for detecting a ringing signal from the network when an incoming call is received from a network station. A connection is then established between the calling station and the base station if it fails to access the mobile station. An announcement is then transmitted to the network and the recording/playback apparatus is operated to record a message from the calling station.

REFERENCES:
patent: Re33507 (1990-12-01), Hashimoto
patent: 4881259 (1989-11-01), Scordato
patent: 4903291 (1990-02-01), Tsurufuji et al.
patent: 4920557 (1990-04-01), Umemoto
patent: 4941203 (1990-07-01), Patsiokas et al.
patent: 4977589 (1990-12-01), Johnson et al.

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