Communication system including portable terminals and fixed terminals
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United States of America Patent
Stats
-
Oct 20, 1992
Grant Date -
N/A
app pub date -
Sep 21, 1990
filing date -
Sep 25, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A communication system including a plurality of portable terminal apparatuses each capable of calling a partner terminal apparatus via a radio channel and a plurality of fixed terminal apparatuses each being connected via an ISDN interface to a time-division switch and each being connectable to the portable terminal in which when two portable terminals having an established cell are respectively attached to two fixed terminal apparatuses arbitrarily selected, the state of the call is automatically transferred to the two fixed terminal apparatuses so that the speech can be achieved between the fixed terminal apparatuses without conducting another call establishing procedure.
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