Mobile unit supervisory control sequencer and method

A mobile telephone unit comprising:

• means for storing a first address signal representing a telephone system subscriber:
• means for displaying the stored address signal;
• means for storing a plurality of address signals each representing a seven digit number of a plurality of different telephone system subscribers;
• means including a single, manually depressable switch associated with each of said plurality of stored address signals for selectively transferring any one of said plurality of address signals from said last-mentioned storing means to said first-mentioned storing means;
• a manually depressable switch for generating a call initiation signal;
• means for selecting one of a predetermined plurality of communication channels for broadcast of a call-up signal;
• means for generating a call enabling signal in response to the selection of said one communication channel;
• means for broadcasting a call-up signal including said stored first address signal in response to the generation of both said all initiation signal and said call enabling signal;
• means for receiving a response signal acknowledging said call-up signal;
• and,
• means for automatically indicating receipt of said response signal.

A method of initiating and establishing two-way communications between two telephone system subscribers from a mobile radio-telephone having a handset in removable cooperable engagement with a hook-switch, the method comprising the steps of:

• storing an address signal representing a called telephone system subscriber;
• displaying the stored address signal for visual verification of the address signal;
• selecting one of a predetermined plurality of communication channels for broadcast of a call-up signal and generating a call enabling signal when said one channel has been selected;
• manually depressing a call switch to generate and store a call initiation signal while retaining the handset in engagement with the hook-switch
• broadcasting a call-up signal including the stored address signal in response to the generation of both the call initiation signal and the call enabling signal,
• receiving a response signal acknowledging the call-up signal;
• and,
• automatically indicating receipt of the response signal to indicate the establishment of a communication link with the called telphone system subscriber with the handset in engagement with the hook-switch.

A mobile telephone unit for two-way communication over communications channels comprising:

• means for generating a call-up signal including an address signal representing a called telephone system subscriber;
• and,
• means for detecting the availability of a designated one of the communication channels for transmission of the call-up signal;
• means for generating and storing a call initiation signal;
• means for initiating the transmission of said call-up signal over the designated one of the communication channels in response to the simultaneous detection of the availability of the designated channel and the presence of the stored call initiation signal;
• said transmission initiating means being operable to initiate the transmission of said call-up signal repetitively, said transmission initiating means including means for effecting the transmission of said call-up signal a random time interval after initiation of transmission by said initiating means and introducing a random time delay between successive repeated transmissions of said call-up signal.

A method for transmitting data from a mobile telephone unit to a central control unit over a designated signaling channel, comprising the steps of:

• generating a call-up signal including an address signal representing a called subscriber;
• detecting the availability of the designated signaling channel for transmission of the call-up signal;
• generating and storing a call initiation signal;
• transmitting the call-up signal a first time to the central control unit over the designated signaling channel a random time interval after the simultaneous detection of the availability of the designated signaling channel and the presence of the stored call initiation signal;
• and,
• transmitting the call-up signal a second time subsequent to the first time to the central control unit over the designated signaling channel, the interval between the first and second transmissions of the call-up signal including a random time delay.

A mobile telephone unit comprising:

• first storing means for storing an address signal representing a telephone system subscriber;
• means for displaying the stored address signal;
• a manually depressable call switch for generating a call initiation signal;
• means for selecting one of a predetermined plurality of communication channels for broadcast of said call-up signal including means for detecting and recognizing a predetermined code pattern in a signal received over said plurality of communication channels, means for detecting the said level of the received signal, and means for selecting said one channel in response to the recognition of said code pattern and in response to a detected level of said received signal;
• means for generating a call enabling signal in response to the selection of said one communication channel;
• means for initiating the broadcast of a call-up signal including said stored address signal over the selected one of the plurality of communication channels in response to the generation of both said all initiation signal generated through the manual depression of said call switch and said call enabling signal generated in response to the selection of said one channel;
• means for receiving a response signal acknowledging said call-up signal and for automatically indicating receipt of said response signal;
• and
• means including a handset removably cooperable with a hook-switch independent of said manually depressable call switch for establishing two-way voice communication over a two-way communication channel in response to removal of said handset from cooperating relationship with said hook-switch, whereby a call may be initiated and acknowledged without removing the handset from the hook-swtich.