초록 ▼

A wireless telephone subsystem for coupling line type telephony equipment to the public switched telephone network is described. A base unit is provided which is adapted to be coupled to a plurality of lines of the PSTN. The base unit includes a base coder/decoder which transforms analog signals rec

A wireless telephone subsystem for coupling line type telephony equipment to the public switched telephone network is described. A base unit is provided which is adapted to be coupled to a plurality of lines of the PSTN. The base unit includes a base coder/decoder which transforms analog signals received from the lines of the PSTN to digital signals and conversely transforms digital signals to analog signals for coupling to the lines of the PSTN. The base unit includes a multiple channel transceiver coupled to the base coder/decoder which responds to the digital signals provided by the base coder/decoder for transmitting those signals by placing selected portions of the digital signals into selected portions of a multiplex frame. The base multiple channel transceiver also receives digital signals and couples those digital signals to the base coder/decoder. Programmable switching means is provided to associate selected of the PSTN lines and selected portions of the multiplex frame. The subsystem also includes a wireless interface unit for connecting to the line type telephony equipment. The wireless interface unit also includes a remote coder/decoder for transforming analog signals received from the line type telephony equipment into digital signals and for transforming other digital signals into analog signals for coupling to the line type telephony equipment. The wireless interface also includes a remote transceiver which is coupled to the remote coder/decoder. The remote transceiver responds to digital signals from the remote coder/decoder for transmitting the signals into selected portions of the multiplex frame and receives other digital signals and couples those to the remote coder/decoder.

대표청구항 ▼

A wireless telephone subsystem for coupling line type telephony equipment to the Public Switched Telephone Network (PSTN) comprising: a) a base unit adapted to be coupled to a plurality of lines of the PSTN, said base unit including: a1) base coder/decoder means for transforming analog signals recei

A wireless telephone subsystem for coupling line type telephony equipment to the Public Switched Telephone Network (PSTN) comprising: a) a base unit adapted to be coupled to a plurality of lines of the PSTN, said base unit including: a1) base coder/decoder means for transforming analog signals received from said lines of said PSTN to first digital signals and for transforming other digital signals to analog signals for coupling to said lines of said PSTN, a2) base multiple channel TDD/TDMA transceiver means coupled to said base coder/decoder means, said base multiple channel TDD/TDMA transceiver means responsive to said first digital signals for transmitting said signals by placing selected portions of said first digital signals into selected portions of a multiplex frame, and for receiving other digital signals and coupling said other digital signals to said base coder/decoder means, and a3) programmable switching means for associating selected of said PSTN lines and selected portions of said multiplex frame b) at least one wireless interface unit comprising: b1) coupling means for connecting to a line type telephony equipment, b2) remote coder/decoder means for transforming analog signals received from said line type telephony equipment over said coupling means to second digital signals and for transforming other digital signals to analog signals for coupling to said line type telephony equipment through said coupling means, and b3) remote TDD/TDMA transceiver means coupled to said remote coder/decoder means, said remote TDD/TDMA transceiver means responsive to said second digital signals for transmitting said second digital signals by placing said second digital signals into selected portions of said multiplex frame, and for receiving other digital signals for coupling said other digital signals to said remote coder/decoder means, whereby said line type telephony equipment is coupled to said PSTN without requiring a conductive path therebetween.