Telephone-radio interconnect system
First Claim
1. An interconnect system employed in a two-way communications system operating on a radio channel and providing access to a telephone line comprising:
- a telephone patch interconnect unit connected to a fixed radio transceiver and comprising;
means for accepting dialed digits from the telephone line and encoding said dialed digits into a first data packet;
means for monitoring the activity on the radio channel received by said fixed transceiver and coupling said first data packet to said transceiver for transmission when no activity is present on the radio channel;
means for accepting and acknowledging a second data packet received by said fixed radio transceiver and decoding said second data packets into digits suitable for coupling to the telephone line thereby dialing a telephone number; and
means for coupling audio received from said fixed radio transceiver to the telephone line and for coupling audio from the telephone line to said transceiver, andat least one remote unit having a unique identification digit sequence comprising;
means for receiving and decoding said first data packet into digits and activating an alert if said decoded digits match said unique digit sequence identification;
means for generating and storing digits corresponding to a desired telephone number; and
means for encoding said telephone number digits into said second data packet and transmitting said second data packet to said fixed radio tranceiver of said telephone patch interface unit.
1 Assignment
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Accused Products
Abstract
A telephone interconnect system for a two-way radio communications system is disclosed. A telephone patch interconnect unit accepts dialed digits from a telephone line, encodes them into a data packet, and couples the data packet to a fixed transceiver for transmission to remote units. A remote unit with a digit sequence identification matching the received and decoded dialed digit activates an alert. A remote unit may generate and store digits corresponding to a desired telephone number. The digits are subsequently encoded into a data packet and transmitted to the telephone patch interconnect unit. The interconnect unit accepts, acknowledges and decodes the data packet and couples the resulting digits to the telephone line.
108 Citations
37 Claims
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1. An interconnect system employed in a two-way communications system operating on a radio channel and providing access to a telephone line comprising:
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a telephone patch interconnect unit connected to a fixed radio transceiver and comprising; means for accepting dialed digits from the telephone line and encoding said dialed digits into a first data packet; means for monitoring the activity on the radio channel received by said fixed transceiver and coupling said first data packet to said transceiver for transmission when no activity is present on the radio channel; means for accepting and acknowledging a second data packet received by said fixed radio transceiver and decoding said second data packets into digits suitable for coupling to the telephone line thereby dialing a telephone number; and means for coupling audio received from said fixed radio transceiver to the telephone line and for coupling audio from the telephone line to said transceiver, and at least one remote unit having a unique identification digit sequence comprising; means for receiving and decoding said first data packet into digits and activating an alert if said decoded digits match said unique digit sequence identification; means for generating and storing digits corresponding to a desired telephone number; and means for encoding said telephone number digits into said second data packet and transmitting said second data packet to said fixed radio tranceiver of said telephone patch interface unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A telephone patch interconnect unit for connecting a fixed transceiver of a two-way communications system operating on a radio channel and serving a plurality of uniquely identified remote units to a telephone line, comprising:
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means for accepting dialed digits corresponding to a specific remote unit from the telephone line and encoding said dialed digits into a first data packet; means for monitoring the activity on the radio channel received by the fixed transceiver; means for coupling said first data packet to the fixed transceiver for transmission to the remote units when no activity is present on the radio channel thereby paging said specific remote unit; means for accepting and acknowledging a second data packet transmitted from a remote unit and received by the fixed transceiver; means for decoding said second data packet into telephone compatible digits and coupling said compatible digits to the telephone line thereby dialing a telephone number; and means for coupling audio received from the fixed transceiver to the telephone line and for coupling audio from the telephone line to the fixed transceiver thereby enabling conversation to take place. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A remote telephone patch unit communicating with a telephone line via a fixed transceiver and a telephone line interconect device which encodes digits received from the telephone line into a first data packet for transmission on a two-way radio channel from the fixed transceiver, comprising:
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a mobile radio transceiver having an associated unique identification digit sequence; means for decoding into digits the first data packet received by said mobile radio transceiver and activating an alerting device if said decoded digits match said unique identification digit sequence thereby responding to a telephone call; means for generating digits corresponding to a desired telephone number and storing said generated digits; means for encoding said stored digits into a second data packet and transmitting said second data packet to the fixed transceiver thereby initiating a telephone call; means for receiving an acknowledgement from the fixed transceiver indicating reception of said second data packet by the fixed transceiver; means for repeating the transmission of said data packet a predeterminded number of times if said acknowledgement is not received; means for transmitting a transmission commencement signal to the telephone line interconnect device at the beginning of each transmission; means for transmitting a transmission cessation signal to the telephone line interconnect device at the end of each transmission; and means for instructing the telephone line interconnect device to transfer telephone calls from said remote telephone patch unit to a selected second remote telephone patch unit. - View Dependent Claims (33, 34, 35)
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36. A method of accessing a telephone line by a remote unit and transmitting telephone numbers and a message via a two-way radio system consisting of a fixed station and at least one remote unit comprising the steps of:
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generating and storing digits at the remote unit which correspond to a desired telephone number; encoding said telephone number digits into a data packet; transmitting said data packet to the fixed station; receiving an acknowledgement from the fixed station indicating said data packet was received by the fixed station; and repeating the transmission of said data packet a predetermined number of times if said acknowledgement is not received.
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37. A method for a two-way radio system of selectively calling one of a plurality of uniquely identified remote units and mediating a conversation via a telephone line interconnected fixed station comprising the steps of:
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accepting dialed digits from the telephone line and encoding said dialed digits into a data packet; monitoring the channel used by the radio system to determine if the channel is being used; transmitting said data packet from the fixed station when said channel is determined to not be in use; detecting a response from the selected remote unit and enabling an audio connection between the remote unit and the telephone line; detecting a transmission cessation from the remote unit; and detecting audio activity on the telephone line and activating the fixed station transmitter in response thereto.
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Specification