Brother DCP7010 Service Manual page 271

Selectors 1 through 3:
These selectors activate or deactivate the 1st dial tone detection function which detects the 1st dial
tone issued from the PSTN when a line is connected to the PSTN.
Setting all of these selectors to "1" activates the dial tone detection function so that the machine
starts dialing upon detection of a dial tone when a line is connected. (However, in those countries
which support no dial tone detection function, e.g., in the U.S.A., setting these selectors to "1"
makes the machine start dialing after a WAIT of 3.5 seconds.) For the detecting conditions of the
1st dial tone, refer to WSW07 and WSW08.
Other setting combinations deactivate the dial tone detection function so that the machine starts
dialing after the specified WAIT (3.5, 7.0, 10.5, 14.0, 17.5, 21.0, or 24.5 seconds) without
detection of a dial tone when a line is connected to the PSTN.
Selector 4: Max. pause time allowable for remote ID code detection
This selector sets the maximum pause time allowable for detecting the second digit of a remote ID
code after detection of the first digit in remote reception.
If selector 4 is set to "0" (2 seconds), for instance, only a remote ID code whose second digit is
detected within 2 seconds after detection of the first digit will become effective so as to activate
the remote function.
Selectors 5 and 6:
These selectors determine whether or not the machine automatically disconnects a line upon
detection of a busy tone in automatic sending mode.
Setting selector 6 to "0" ignores a busy tone so that the machine does not disconnect the line.
Setting selectors 5 and 6 to "0" and "1," respectively, makes the machine detect a busy tone only
after dialing and disconnect the line.
Setting both of selectors 5 and 6 to "1" makes the machine detect a busy tone before and after
dialing and then disconnect the line.
Selector 7: Busy tone detection in automatic receiving mode
This selector determines whether or not the machine automatically disconnects the line upon
detection of a busy tone in automatic receiving mode.
1st dial tone detection
Busy tone detection in automatic sending mode
App. 4-8 Confidential