Cordless telephone system and identification code setting method therefor

• US 5,495,520 A
• Filed: 06/22/1994
• Issued: 02/27/1996
• Est. Priority Date: 06/25/1993
• Status: Expired due to Fees

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Kojima, Susumu
• Primary Examiner(s): Kuntz, Curtis
• Assistant Examiner(s): Chernoff, Michael B.
• Application Number:
  US08/264,057
• Time in Patent Office: 615 Days
• Field of Search: 379/62, 379/61, 379/63, 379/58, 379/356, 379/354, 379/355
• US Class Current: 455/411
• CPC Class Codes: H04M 1/727 Identification code transfer arrangements

Abstract

In a cordless telephone system, a master unit adds to a registration signal an identification (ID) code assigned to a slave unit connectable to the master unit, a master unit transmission password, and an ID code assigned to the master unit, and sends the resulting registration signal to the slave unit. On receiving the registration signal, the slave unit determines whether or not the master unit transmission password is identical with a slave unit password stored therein. If the former is identical with the latter, the slave unit writes the master unit ID code therein, adds the master unit ID code, slave unit transmission password, and slave unit ID code to an end-of-registration signal, and then sends the signal to the master unit. On receiving the end-of-registration signal, the master unit writes the slave unit ID code included in the signal if the slave unit transmission password is identical with a password stored therein.

Claims

1. A cordless telephone system comprising:

a plurality of groups of master units and slave units for being connected to each other, and each including transmitting/receiving means for interchanging signals over a radio channel,

said master units and said slave units each comprising storing means for storing a master unit ID code and a slave unit ID code which are different from each other, and control means for controlling said transmitting/receiving means,

said master units each comprising master unit operating means accessible for entering the slave unit ID code and a slave unit password assigned to one of said slave units to be newly connected to the master unit, and a master unit password assigned to said master unit,

said slave units each comprising slave unit operating means accessible for entering the master unit ID code and the master unit password assigned to said master unit to which said slave unit is to be newly connected, and the slave unit password assigned to said slave unit,

said control means of said master units each comprising means for transmitting a registration signal to which are added the slave unit ID code and slave unit password having been entered, and the master unit ID code stored in said master unit;

said control means of said slave units each comprising means for storing, if the slave unit ID code and the slave unit password added to the registration signal are respectively identical with the slave unit ID code stored and the slave unit password entered, said slave unit ID code of said registration signal in said storing means, and sending an end-of-registration signal to which are added the master unit ID code added to said registration signal, the master unit entered, and said slave unit ID code stored,

said control means of said master units each further comprising means for storing, if the master unit ID code and the master unit password added to the end-of-registration signal are respectively identical with the master unit ID code stored and the master unit password entered, the slave unit ID code having been added to said end-of-registration signal.

2. A system as claimed in claim 1, wherein said control means of said master unit and said slave unit, which are for being connected to each other, respectively further comprise means for adding the master unit ID code and the slave unit ID code stored to control signals to be interchanged, to thereby confirm a unit sent said control signals and a unit to receive said control signals, whereby erroneous connection is eliminated.

3. A cordless telephone system comprising:

a plurality of groups of master units and slave units for being connected to each other, and each including transmitting/receiving means for interchanging signals over a radio channel,

said master units and said slave units each comprising storing means for storing a master unit ID code arid a slave unit ID code which are different from each other, and control means for controlling said transmitting/receiving means,

said master units each comprising master unit operating means accessible for entering the slave unit ID code and a slave unit password assigned to one of said slave units to be newly connected to the master unit, and a master unit password assigned to said master unit,

said slave units each comprising slave unit operating means accessible for entering a master unit password assigned to the master unit to which the slave unit is to be newly connected, and the slave unit password assigned to said slave unit,

said control means of said master units each comprising means for transmitting a registration signal to which are added the slave unit ID code and the slave unit password entered, and the master unit ID code stored,

said control means of said slave units each comprising means for storing, if the slave unit ID code and the slave unit password added to the registration signal are respectively identical with the slave unit ID code stored and the slave unit password entered, said slave unit ID code of said registration signal in said storing means, and sending an end-of-registration signal to which are added the master unit ID code added to said registration signal, the master unit password entered, and said slave unit ID code stored,

said control means of said master units each further comprising means for storing, if the master unit ID code and the master unit password added to the end-of-registration signal are respectively identical with the master unit ID code stored and the master unit password entered, the slave unit ID code having been added to said end-of-registration signal.

4. A cordless telephone system comprising:

a plurality of groups of master units and slave units for being connected to each other, and each including transmitting/receiving means for interchanging signals over a radio channel,

said master units and said slave units each comprising storing means for storing a master unit ID code and a slave unit ID code which are different from each other, and control means for controlling said transmitting/receiving means,

said slave units each comprising slave unit operating means accessible for entering the master unit ID code and a master unit password assigned to said master unit to which the slave unit is to be newly connected, and said slave unit password assigned to said slave unit,

said master units each comprising master unit operating means accessible for entering the slave unit ID code and a slave unit password assigned to one of said slave units to be newly connected to the master unit, and a master unit password assigned to said master unit,

said control means of said slave units each comprising means for transmitting a registration signal to which are added the master unit ID code and the slave unit password entered, and the slave unit ID code assigned to the slave unit,

said control means of said master units each comprising means for storing, if the master unit ID code and the master unit password added to the registration signal are respectively identical with the master unit ID code stored and the master unit password entered, the slave unit ID code of said registration signal in said storing means, and sending an end-of-registration signal to which are added said slave unit ID code and the slave unit password entered, and said master unit ID code stored,

said control means of said slave units each further comprising means for storing, if the slave unit ID code and the slave unit password added to the end-of-registration signal are respectively identical with the slave unit ID code stored and the slave unit password entered, the master unit ID code having been added to said end-of-registration signal.

5. A cordless telephone system comprising:

a plurality of master units and a plurality of slave units for being connected to each other, and each including transmitting/receiving means for interchanging signals over a radio channel,

said master units and said slave units each comprising storing means for storing a master unit ID code and a slave unit ID code which are different from each other, and control means for controlling said transmitting/receiving means,

said slave units each comprising slave unit operating means accessible for entering the master unit ID code and a master unit password assigned to the master unit to which the slave unit is to be newly connected, and a slave unit password assigned to said slave unit,

said master units each comprising master unit operating means accessible for entering the slave unit ID code assigned to the slave unit which is to be newly connected to the master unit, and a master unit password assigned to said master unit,

said control means of said slave units each comprising means for transmitting a registration signal to which are added the master unit ID code entered and the master unit password entered, and the slave unit ID code stored,

said control means of said master units each comprising means for storing, if the master unit ID code and the master unit password added to the registration signal are respectively identical with the master unit ID code stored and the master unit password entered, the slave unit ID code of said registration signal in said storing means, and sending an end-of-registration signal to which are added the slave unit ID code added to said registration signal, the slave unit password entered, and said master unit ID code stored,

said control means of said slave units each further comprising means for storing, if the slave unit ID code and the slave unit password added to the end-of-registration signal are respectively identical with the slave unit ID code stored and the slave unit password entered, the master unit ID code having been added to said end-of-registration signal.

6. A cordless telephone system comprising:

a plurality of groups of master units and slave units for being connected to each other and each including transmitting/receiving means for interchanging signals over a radio channel and transmission/reception control means for controlling said transmitting/receiving means, and a main unit including a line interface switch connected to said master units by respective wired channels and switch control means for controlling said line interface switch,

said slave units each comprising slave unit storing means for storing a master unit ID code assigned to the master unit, to which the slave unit is connectable, and a slave unit ID code of said slave unit which is different from said master unit ID code,

said main unit comprising main unit storing means for storing the slave unit ID code of the slave unit connectable to the master unit,

said master units each comprising master unit storing means for storing the master unit ID code assigned thereto,

said main unit comprising main unit operating means accessible for entering the slave unit ID code and a slave unit password assigned to one of said slave units to be newly connected, and a main unit password,

said switch control means comprising means for outputting a registration signal to which are added the slave unit ID code and the slave unit password entered,

said transmission/reception control means of said master units each comprising means for transmitting the registration signal by adding the master unit ID code stored,

said slave units each comprising slave unit operating means accessible for entering the master unit ID code assigned to the master unit to which the slave unit is to be newly connected, a main unit password, and the slave unit password assigned to said slave unit,

said transmission/reception control means of said slave units each comprising means for storing, if the slave unit ID code and the slave unit password added to the registration signal are respectively identical with the slave unit ID code stored and the slave unit password entered, the master unit ID code of said registration signal in said storing means, and means for sending an end-of-registration signal to which are added said master unit ID code and the main unit password entered, and the slave unit ID code stored,

said transmission/reception control means of said master units each further comprising means for receiving the end-of-registration signal including the master unit ID code stored,

said switch control means further comprising means for storing, if the main unit password added to the end-of-registration signal received is identical with the main unit password entered, the slave unit ID code having been added to said end-of-registration signal.

7. A system as claimed in claim 6, wherein said switch control means, said transmission/reception control means of said master units, and said transmission/reception control means of said slave units further comprise means for adding the master unit ID code and the slave unit ID code stored to control signals to be interchanged, to thereby confirm a unit sent said control signals and a unit to receive said control signals, whereby erroneous connection is eliminated.