User`s manual

162
● Line disconnection processing can be conducted from either device as long as the connection is in progress.
● The line disconnection processing disconnects the line connection with the external device as well as the connection with
the Q series C24 modem.
● Even when an error occurs during the line disconnection, the disconnection processing will be forced.
● If data communication is to be resumed after line disconnection, either one of the following processing will be initiated
depending on the initialization complete signal (X10).
• If the initialization complete signal is OFF: Start from the initialization of the modem/TA.
• If the initialization complete signal is ON: Start from the line connection with the external device.
Remark
There is no buffer memory for line disconnection processing.
(2) Precautions during the line disconnection
• Prior to data communication with external devices, determine when and which station will perform the line
connection (dialing) and line disconnection processing to the external device.
• If the line is disconnected during data transmission, transmission processing will be performed depending on
the signal status of the Q series C24 RS-232 interface.
• If the line is disconnected during data reception, data reception will be disabled. This may cause an error
occurrence such as a reception time out.
• If the data communication is not performed during the designated noncommunication interval time, the Q
series C24 automatically disconnects line. When the line is disconnected, the connection in progress signal
(X12) and the modem initialization completion signal (X10) turn off and the modem disconnection completion
signal (X14) turns on. To turn off the modem disconnection completion signal (X14), turn on the modem
disconnection request signal (Y12) and keep it for a second after the modem disconnection completion
signal (X14) turns on.