Communication terminal and the method using the same
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United States of America Patent
Stats
-
Jun 20, 1995
Issued Date -
N/A
app pub date -
Jul 8, 1993
filing date -
Jun 27, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A communication terminal having an interface to which its components including an analog telephone are connected and which enables communication with another terminal at the other end of a line of the integrated services digital network. A first tone is generated to set the period of time for dialing of the analog telephone, a second tone different from the first tone is generated to set the period of time for connection between the analog telephone and the terminal at the other according to the dialing during the period of time when the first tone is being generated, and a third tone different from the first and second tones is generated to set the period of time for terminating communication using the analog telephone when the connection established during the period of time when the second tone is being generated is cancelled. Each of first, second and third tones generated is output to the analog telephone.
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