Telephonic communications – Audio message storage – retrieval – or synthesis
Patent
1994-02-10
1995-10-31
Kuntz, Curtis
Telephonic communications
Audio message storage, retrieval, or synthesis
379 58, 379 59, 455 331, 455 341, 455 541, H04Q 722
Patent
active
054636752
ABSTRACT:
Transitions of a mobile radiotelephone between operating on A band service and B band service are controlled to enable the mobile radiotelephone to utilize the bands of a single service provider over a wide area of cellular service areas in which service is provided on either A or B bands by that single service provider. Each mobile radiotelephone served by a single service provider has an extended home system identification entered into its number assignment module (NAM). When the mobile radiotelephone is operating in a roam mode it scans both the A and B bands searching for the extended home system identification. If the system is successful in locking onto one of the extended home system identification channels the mobile radiotelephone uses that setup channel to establish and receive calls from its original service provider within the present service area. If the lockup can not be made the mobile radiotelephone uses the system I.D. and the A or B band as normally set in the NAM.
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Cumming William
Kuntz Curtis
Steinmetz Alfred G.
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