Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Patent
1998-03-09
2000-04-25
Kuntz, Curtis A.
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
455561, 455422, 379 9314, 37910006, H04Q 700, H04Q 900
Patent
active
060554436
ABSTRACT:
A cellular modem pool provides call progress information to a calling party during call setup. In particular, the cellular modem pool includes a coupling means, which communicates any signals between the cellular-side of the cellular data connection and the PSTN-side of the cellular data connection during call setup. This allows the calling party to hear the call progress on the called party side of the data call. In addition, the cellular modem pool monitors the signals for a data signal provided by the called party, e.g., a predefined answer tone. Once the answer tone is detected, the cellular modem pool opens the connection provided by the coupling means and processes the respective signals on the cellular-side and the PSTN-side of the cellular modem pool.
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Exner James Walter
Hitchcock Lynn Wesley
Jung Edward
Matthews Craig
Kuntz Curtis A.
Paradyne Corporation
Tieu Binh K.
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