Communication with a non-telephone terminal via a telephone switching network using two consecutive calls
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United States of America Patent
Stats
-
Feb 19, 1991
Grant Date -
N/A
app pub date -
May 24, 1989
filing date -
May 24, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A telecommunications system allows data communications between a data center and a non-telephone terminal via a telephone switching network. A terminal adapter connected to a first telephone line of the network is also connected to the non-telephone terminal and a telephone terminal. A center adapter is connected between the data center and a second telephone line. The center adapter originates a first call destined to the terminal adapter and releases it upon detecting the call terminating to the terminal adapter. The center adapter then originates a second call destined to the same terminal adapter. The center adapter detects the successive terminations of the two calls to connect the telephone line to the non-telephone terminal to allow data transmission between the data center and the non-telephone terminal.
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