| 摘要 |
PURPOSE:To recognize the operating status of a copying machine even an operator is separated from the copying machine by transmitting the operating status of the copying machine to a prescribed terminal connected to a private branch exchange. CONSTITUTION:When certain data (in this case, a character string connecting an identification code (123) to transmit the data of the operating status to a character string (END) representing the completion of copying with a mark (*)) is transmitted, a code ENQ(which expedites the response of an opponent) is transmitted first. When a certain code is transmitted, a code SYN(synchronous data) is attached at the leading position of the code. Since the private branch exchange 19 transmits a code ACK(affirmative response code) responding to the above, the copying machine 11, when receiving the code, transmits a text code (123*END) sandwiched between a code STX(text leading code) and a code ETX(text completion code). Also, a prescribed inspection code is attached at the last position of a message at need, When the message is received, the private branch exchange 19 and the copying machine 11 exchange a code EOT (code representing the end of text transmission) at the leading position of which the SYN is attached, then, the transmission of the message is completed. |
