Brother MFC8420 Service Manual page 298

l
Selectors 1 through 3:
Selectors
1 2 3
0 0 0 No WAIT is inserted even if the Pause button is pressed.
0 0 1 If you press the Pause button during dialing, the machine will insert WAIT
0 1 0 as defined in the above table.
0 1 1
If the Pause button is pressed repeatedly, the machine inserts the
1 0 0
specified WAIT multiplied by the number of depressions. It applies also in
hook-up dialing.
1 0 1 When these selectors are set to "1, 0, 1":
1 1 0
If you press the Pause button during dialing, the machine will wait for the
1 1 1
2nd dial tone to be sent via the communications line.
When these selectors are set to "1, 1, 0" or "1, 1, 1":
If you press the Pause button during dialing, the machine will first wait for
the 2nd dial tone to be sent via the communications line. After that, the
machine will insert a WAIT of 3.5 seconds.
If no 2nd dial tone is received within the specified time length (set by
WSW08), the machine will disconnect the line if in automatic dialing, or it
will start transmitting the dial signal if given after depression of the Pause
button in hook-up dialing.
l
Selectors 4 through 6:
Upon detection of the 2nd dial tone for the time length specified by these selectors, the
machine starts dialing.
This setting is effective only when the 2nd dial tone detection function is activated by
selectors 1 through 3 (Setting 101, 110, or 111).
This function does not apply in those countries where no dial tone detection function is
supported.
l Selector 7: No. of 2nd dial tone detection times
This selector sets the number of dial tone detection times required for starting dialing.
l Selector 8: 2nd dial tone interrupt detecting time
This selector sets the allowable time length of an interrupt which should not be interpreted as
an interrupt in the 2nd tone dialing.
Pause button setting and 2nd dial tone detection
Detection of 2nd dial tone
A-13
MFC-8420/8820D/8820DN, DCP-8020/8025D/8025DN
SERVICE MANUAL