Method for handling calls to a non-registered mobile subscriber in a mobile telephone system
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United States of America Patent
Stats
-
Jul 16, 1996
Grant Date -
N/A
app pub date -
May 27, 1994
filing date -
May 28, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for handling calls to a terminal in a mobile telephone system of the kind in which the call is handled by an ISUP/IAM message which has a static relationship between the address of the visitor location register in the network in which the terminal roams, and the unique terminal identity. If the visitor location register has no data record relating to the unique identity, an attempt is made to collect from the home location register of the called subscriber the data that is required to complete the connection, this data being stored in the visitor location register. If the attempt is successful and the called subscriber is active, the connection is set up in a known manner with the aid of this data.
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