Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Patent
1997-04-14
1999-06-15
Vo, Nguyen
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
455 741, 455433, H04Q 738, H04Q 722, H01Q 704
Patent
active
059131764
ABSTRACT:
A method and apparatus are provided for connecting a telephone subscriber to the public switched telephone network ("PSTN"), where a physical connection is not available while utilizing conventional telephony subscriber terminals. The connection is provided using a wireless telecommunications system adapted with a gateway collection of lines and a switch between the wireless system and the PSTN. When a call is to be made, the wireless system sends a predetermined access number to identify the caller as a gateway caller. Thereafter, a connection is made between the wireless subscriber and a dedicated PSTN line. The method includes providing a gateway access code to the public switch to obtain a trunk line and thereafter, utilizing the normal call progression cues provided by the PSTN, such as a busy signal and dial tone. The destination telephone number dialed as DTMF is then sent over a designated voice channel by the transceiver, and the connection is made by the PSTN. An interface is provided which includes a microprocessor programmed to follow a call origination and a call reception sequence as well as circuitry providing for communication between the mobile station transceiver and the conventional telephone set.
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JRC Canada Inc.
Orgad Edan
Vo Nguyen
LandOfFree
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