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REMOTE STORAGE AND RWRIEVAL OF CALL ID'S

IP.com Disclosure Number: IPCOM000006459D
Original Publication Date: 1992-May-01
Included in the Prior Art Database: 2002-Jan-04
Document File: 1 page(s) / 60K

Publishing Venue

Motorola

Related People

Charles R Schultz: AUTHOR

Abstract

When a radio user travels over great distances in a network of radio systems, he will pass from one "zone" to another (each "zone" being a system or group of sys- tems with a common user database). When another radio operator in the zone wishes to contact the user, he could make a Private Call, or some other form of individual call to the user. Successful calls result in the caller's ID being stored in the target user's memory for callback at a later time. If the target user has let? the zone then such a call would not be completed, and the target user would have no knowledge of the call attempt by the caller.

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MOTOROLA INC. Technical Developments Volume15 May 1992

REMOTE STORAGE AND RWRIEVAL OF CALL ID'S

by Charles R Schultz

  When a radio user travels over great distances in a network of radio systems, he will pass from one "zone" to another (each "zone" being a system or group of sys- tems with a common user database). When another radio operator in the zone wishes to contact the user, he could make a Private Call, or some other form of individual call to the user. Successful calls result in the caller's ID being stored in the target user's memory for callback at a later time. If the target user has let? the zone then such a call would not be completed, and the target user would have no knowledge of the call attempt by the caller.

  This problem can be resolved by adding the capa- biity of the common user database in each zone to retain for each user a list of IDS of unsuccessful calliig radios. This list would hold unique IDS, with the purpose of transmitting this list to the target user when it is deter- mined that he has *e-entered the zone.

A request for the zone database to store unsuccess-

ful call IDS could be via a unique signalling word gener- ated by the radio when it betermines that it is leaving the zone or it could come about automatically via some existing mechanism such aa de-aBiliation (see Figure 1). Subsequent transmission of the stored IDS to the target radio can be performed up& an explicit signalling request from the radio, or via a mechanism suc...