Brother MFC 4550, Service Manual

Page: 97 / 191

V –
15
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Selector 8: "R" key function
This selector determines whether or not the 1st dial tone detection function (specified by se-
lectors 1 through 3 of WSW05) is added to the R key.
If this selector is set to "0," pressing the R key automatically activates the 1st dial tone detec-
tion function when the PABX and the automatic calling are selected by using the function
switch. If you press the R key and a dial number in succession, the equipment will automati-
cally carry out the 1st dial tone detection function following the original transfer function as
shown below.
Dial number
Original transfer
function of R key
1st dial tone detection function
WSW04 (TRANSFER facility setting)
Function
Selector
No.
Setting and Specifications
1 Earth function in transfer facility 0: Provided 1: Not provided
2
3
No. 2 3
0 0 : 350 + 440 Hz (A)
0 1 : 440 + 480 Hz (B)
1 x : 480 + 620 Hz (C)
Dual tone detection frequency
in ICM recording
Not used. 4
5
6
Break time length for flash
function
7
8
No. 7 8
0 0 : 80 ms
0 1 : 110 ms
1 0 : 250 ms
1 1 : 500 ms
No. 5 6
0 0 : 200 ms
0 1 : 300 ms
1 0 : 500 ms
1 1 : 700 ms
Earth time length for earth
function
NOTE: Selectors 1 and 5 through 8 are not applicable in those countries where no transfer facility is
supported.
Selectors 2 and 3 are applicable to those models equipped with a built-in TAD or in the U.S.A.
●
Selector 1: Earth function in transfer facility
This selector determines whether or not the earth function is added to the transfer setting
menu to be accessed by the function switch.
●
Selectors 5 and 6: Earth time length for earth function
These selectors set the short-circuiting time length of the telephone line (La or Lb) to ground.
This setting is effective only when the earth function is selected for the R key by using the
function switch.
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Selectors 7 and 8: Break time length for flash function
These selectors set the break time length.
This setting is effective only when the flash function is selected for the R key by using the
function switch.