| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication device for detecting a difference in version of a control specification of an antenna device and non-implementation of negotiation. SOLUTION: A master device 10 as a communication device for controlling a slave device 20 of an antenna device is used. The difference in negotiation due to the difference in version of a control specification of an antenna device mounted on the slave device 20 is detected. In addition, the slave device 20 detects that no negotiation of the control specification of the antenna device is implemented. Thereafter, a CPU 100 of the master device 10 performs negotiation according to a device on the other end of the line by using a negotiation part 115. COPYRIGHT: (C)2011,JPO&INPIT
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