Brother MFC 1870MC, Service Manual, Page: 108 / 217

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* PABX: Private automatic branch exchange
NOTE: Selectors 2 through 4 and 6 through 8 are not applicable where no PABX is installed.
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Selectors 1 and 5: CNG detection when sharing a modular wall socket with a telephone
These selectors determine whether or not the equipment detects a CNG signal when a line
is connected to a telephone sharing a modular wall socket with the equipment. If these se-
lectors are set to "0,0," the equipment does not detect CNG. If set to other selector values,
the equipment interprets CNG as an effective signal upon detection of CNG signals by the
number of cycles specified by these selectors and then starts FAX reception.
Selector
No.1 No. 5
Cycle
0 (A) 0 (A) No detection
0 (A) 1 (B) One cycle
1 (B) 0 (A) 1.5 cycles
1 (B) 1 (B) 2 cycles
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Selectors 2 through 4: Min. detection time length of PABX dial tone, required for starting
dialing
Upon detection of the PABX dial tone for the time length set by these selectors, the equip-
ment starts dialing.
These selectors are effective only when both selectors 6 and 7 are set to "1" (Detection).
WSW03
(PABX* mode setting)
Function
Selector
No.
Setting and Specifications
CNG detection when sharing a
modular wall socket with a telephone
CNG detection when sharing a
modular wall socket with a telephone
1
0: A 1: B
2
|
4
Min. detection time length of
PABX* dial tone, required for
starting dialing
No. 2 3 4
0 0 0 : 50 ms
0 0 1 : 210 ms
0 1 0 : 500 ms
0 1 1 : 800 ms
1 0 0 : 900 ms
1 0 1 : 1.5 sec.
1 1 0 : 2.0 sec.
1 1 1 : 2.5 sec.
5
0: A 1: B
8 "R" key function
0: 1st dial tone 1: No 1st dial
detection add tone detection
No. 6 7
0 0 : No detection
(3.5 sec. WAIT)
0 1 : No detection
(5 sec. WAIT)
1 0 : No detection
(7 sec. WAIT)
1 1 : Detection
(Frequency only)
Dial tone detection in PABX*
6
7