| 摘要 |
PURPOSE: To group a master unit and a slave unit capable of performing data communication or voice speech and to prevent interference by limiting the range of the master unit and the slave unit connectable in the voice speech or the data communication. CONSTITUTION: The master unit CS-1 limits the voice speech and the data communication to be possible only with the slave units PS-1-PS-15 to constitute a voice/communication group No.1 and the master unit CS-8 limits the voice speech and the data communication to be possible only with the slave unit PS-16 to constitute the voice/communication group No.2, respectively. Also, the master units CS-1 and CS-8 respectively limit the slave units PS capable of performing the voice speech and constitute a first communication group capable of performing the data communication with the slave units PS-1-PS-16. In this case, the master units CS-1-CS-9 respectively exchange temporary IDS with the slave units PS capable of performing the voice speech or the data communication beforehand and the number of the slave units PS capable of performing the voice speech and the data communication is limited by registering the temporary IDs corresponding to the present station IDs of the slave units PS. |
