Brother MFC-970MC, FAX-931, FAX-921 service manual Pseudo ring backtones in F/T mode

WSW26 (Function setting 4)

Selector	Function			Setting and Specifications
No.
1	Application of DC wetting pulse	0:		OFF	1: ON
2	Overvoltage limiter at the applying	0:		ON	1: OFF
	time of a wetting pulse
3	Not used.
4	No. of CNG cycles to be detected	No. 4	5
		0	0	:	0.5	(A)
	(when the line is connected via the
		0	1	:	1	(B)
5	external telephone except in the
		1	0	:	1.5	(C)
	external TAD mode)
		1	1	:	2	(D)
6	No. of CNG cycles to be detected	No. 6	7
	(when the line is connected via the	0	0	:	0.5	(A)
7	external telephone in the external	0	1	:	1	(B)
	TAD mode or via the facsimile	1	0	:	1.5	(C)
	equipment in F/T mode)	1	1	:	2	(D)
8	FAX reception after the time-out of	0:	YES		1:	NO
	pseudo ring backtones in F/T mode

NOTE: Selectors 6 and 7 are not applicable to those models equipped with a built-in TAD.

•Selectors 1 and 2: Application of DC wetting pulse and overvoltage limiter

These selectors take effect only when the UK version of the facsimile equipment is set up for the British Telecom’s caller ID service or its equivalent.

Selector 2 takes effect only when selector 1 is set to "1."

•Selectors 4 and 5: No. of CNG cycles to be detected

The equipment interprets a CNG as an effective signal if it detects a CNG signal by the number of cycles specified by these selectors when the line is connected via the external telephone except in the external TAD mode.

•Selectors 6 and 7: No. of CNG cycles to be detected

The equipment interprets a CNG as an effective signal if it detects a CNG signal by the number of cycles specified by these selectors when the line is connected via the external telephone in the external TAD mode or via the facsimile equipment in F/T mode.

•Selector 8: FAX reception after the time-out of pseudo ring backtones in F/T mode

If this selector is set to "0," the equipment starts receiving FAX messages when it receives a CNG signal within 10-second no-tone period provided after the time-out of pseudo ring backtones. If no CNG is received within the period, the equipment disconnects the line.

If this selector is set to "1," the equipment disconnects the line after issuing pseudo ring backtones.

V - 39