Brother MFC620CN Service Manual page 381

Selector 4: Dual tone detection sensitivity in ICM recording
Setting this selector to "1" increases the tone detection sensitivity in ICM recording.
Selectors 6 to 8:
These selectors set the break time length.
This setting is effective only when the flash function is selected for the Speed Dial key by using the
function switch.
Selector
No.
1
| 1st dial tone detection
3
Max. pause time allowable for
4
remote ID code detection
5
Busy tone detection in auto-
matic sending mode
6
Busy tone detection in auto-
7
matic receiving mode
8 Not used.
NOTE: Selectors 5 through 7 are not applicable in those countries where no busy tone detection is
supported.
Break time length for flash function
WSW05
(1st dial tone and busy tone detection)
Function Setting and Specifications
No. 1 2 3
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0 : 2 seconds
No. 5 6
0 0 :
0 1 :
1 0 :
1 1 :
0 : Yes
App. 4-6
: 3.5 sec. WAIT
: 7.0 sec. WAIT
: 10.5 sec. WAIT
: 14.0 sec. WAIT
: 17.5 sec. WAIT
: 21.0 sec. WAIT
: 2.5 sec. WAIT
: Detection (Without WAIT)
1: 1 second
No detection
Detection only after dialing
No detection
Detection before and after dialing
1: No
Confidential