| 摘要 |
In a selective polling communication, the apparatus on the reception side is allowed to properly recognize the absence of polling transmission information in a designated memory box. If there is no polling transmission information in the memory box, a DIS signal in which bit 47 of the FIF in the DIS signal is set to "0" (there is no SEP receiving function) is transmitted upon automatic reception. If at least one or more polling transmission information has been stored in the memory box, a DIS signal in which bit 47 of the FIF in the DIS signal is set to "1" (there is the SEP receiving function) is transmitted upon automatic reception. After that, if the polling transmission information does not exist in the memory box designated by the SEP signal transmitted from the partner polling receiver, a DIS signal in which bit 47 of the FIF in the DIS signal is set to "0" (there is no SEP receiving function) is transmitted and this fact is notified to the partner apparatus.
|
