Brother DCP-8085DN Service Manual page 467

• Selectors 6 and 7: No. of CNG cycles to be detected (when the line is connected via
the external telephone in the external TAD mode, via the built-in
telephone in the TAD mode, or via the machine in the automatic
reception of the F/T mode)
The machine interprets a CNG as an effective signal if it detects the CNG by the number of
cycles specified by these selectors when the line is connected via the external telephone in
the external TAD mode, via the built-in telephone in the TAD mode, or via the machine in
the automatic reception of the F/T mode.
App. 1-33 Confidential