Selective call system interactive with a wide area selective cal

Details Selective call system interactive with a wide area selective cal Selective call system interactive with a wide area selective cal

1992-07-27

1994-10-11

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

34082547, 34082548, H04B 700

Patent

active

053551265

ABSTRACT:
An on-site selective call receiver interacts with a wide area selective call system to increase the probability of timely message reception by a selective call receiver capable of operating in either the wide area or the on-site selective call system. A frequency shifting signal is transmitted from the wide area system in response to addition of the selective call receiver to the on-site registry or automatic detection of entry of the selective call receiver into the on-site selective call system coverage area. The selective call receiver shifts to the wide area frequency in response to detecting that the receiver is out of range of the on-site system signal or in response to a signal transmitted by the on-site system in response to deletion of the receiver from the on-site registry or detection of the exit of the receiver from the on-site coverage area. The on-site system increases message throughput by interleaving data messages with voice messages. The messages broadcast for the selective call receiver by the wide area system are rebroadcast by the on-site system. The messages broadcast by the on-site system, if data messages, are provided to the wide area system for rebroadcast or, if voice messages are stored in a voice mailbox and a "voice message stored in mailbox" message is provided to the wide area system for transmission.

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