Brother MFC260C Service Manual page 438

Selectors 1 through 3: Prevention against line disconnection during ICM recording (Percentage of
If the machine misdetects an ICM tone as an end-of-call tone, it disconnects the line even during
recording of the ICM. If it happens, change the percentage of the guard tone response time relative to
the end-of-call tone ON time with these selectors.
If the percentage of the actual guard tone response time is more than the setting made by these
selectors, the machine interprets it as no detection of end-of-call tone, continuing recording the ICM.
Selector 4: Trimming of R key signal issued from cordless handset--For connection to base unit
with PBX OFF
For European models, a cordless handset can be registered to up to four base units.
On the cordless handset registered to more than one base unit, if you have programmed an R key
press as part of a number stored in a Speed-Dial location, you can dial using a Speed-Dial location
stored in the handset when connected to the base unit in which PBX is set to ON.
When the cordless handset is connected to any other base unit in which PBX is set to OFF, however,
using a Speed-Dial location may dial an unintended telephone number or cause a malfunction due to
the programmed R key signal preceding the intended number. To avoid such problems, enable the R
key signal trimming function with this selector so that the base unit dials trimming the received R
key signal.
Selector 5: Call transfer to cordless handset from telephone(s) connected in parallel with the
machine (base unit)
Enabling this function allows the machine (base unit) to transfer a call transferred from telephone(s)
connected in parallel with the machine to the cordless handset.
guard tone response time relative to end-of-call tone ON time)
App. 4-62
Confidential