Communication facilities access control arrangement
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 17, 1989
Grant Date -
N/A
app pub date -
Jan 30, 1987
filing date -
Jan 30, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The communication facilities access control arrangement of the telephone munication system detects the dialing of an unauthorized or invalid long distance transmission facility access code and identifies the calling station. A record is maintained of all invalid attempts to access the long distance facilities. When the number of invalid attempts by a calling station exceeds a predetermined limit, the telephone communication system restricts the calling station from all further long distance transmission facility access and generates an alarm indication to identify a possible facility access problem.
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Family
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