Radio telephone system which writes an identification code via radio link when units are electrically connected

Claim 2

A radio telephone system, comprising: a base unit connected to a telephone line; a radio telephone set comprising means for coupling said radio telephone set through a radio link to said base unit; first nonvolatile memory means disposed in said base unit and having an identification code previously written therein; second memory means disposed in said radio telephone set to be optionally written therein; means for electrically connecting said base unit to said radio telephone set; means for detecting completion of an electrical connection between said base unit and said radio telephone set; means for writing in said second memory means said identification code previously written in said first memory means through the radio link; means for starting a writing operation of said writing means in response to a detection output of said detecting means; and a transmitter in said base unit and means for reducing an output power of said transmitter to a level below a predetermined value when said identification code of said first memory means is written in said second memory means through the radio link.

Claim 3

A radio telephone system, comprising: a base unit connected to a telephone line; a radio telephone set comprising means for coupling said radio telephone set through a radio link to said base unit; first memory means disposed in said base unit to be optionally written therein; second nonvolatile memory means disposed in said radio telephone set and having an identification code previously written therein; means for writing in said first memory means said identification code previously written in said second nonvolatile memory means, said writing means including means for electrically connecting said base unit to said radio telephone set, means for producing a detecting output upon completion of an electrical connection between said base unit and said radio telephone set, and manual input means operable in response to the presence of said detection output to start writing in said first memory means said identification code previously written in said second nonvolatile memory means; and a transmitter in said base unit and means for reducing an output power of said transmitter to a level below a predetermined value when said identification code of said first memory means is written in said second memory means through the radio link.

Claim 4

A radio telephone system, comprising: a base unit connected to a telephone line; a radio telephone set comprising means for coupling said radio telephone set through a radio link to said base unit; first memory means disposed in said base unit to be optionally written therein; second nonvolatile memory means disposed in said radio telephone set and having an identification code previously written therein; means for writing in said first memory means said identification code previously written in said second nonvolatile memory means, said writing means including means for electrically connecting said base unit to said radio telephone set, means for producing a detecting output upon completion of an electrical connection between said base unit and said radio telephone set, and manual input means operable in response to the presence of said detection output to start writing in said first memory means said identification code previously written in said second nonvolatile memory means; and a transmitter in said base unit and means for reducing an output power of said transmitter to a level below a predetermined value when said identification code of said first memory means is written in said second memory means through the radio link.