Operation Manual
Troubleshooting
73
B
Dial Tone detection B
When you send a fax automatically, by 
default your machine will wait for a fixed 
amount of time before it starts to dial the 
number. By changing the Dial Tone setting to 
Detection you can make your machine dial 
as soon as it detects a dial tone. This setting 
can save a small amount of time when 
sending a fax to many different numbers. If 
you change the setting and start having 
problems with dialling you should change 
back to the factory No Detection setting.
a Press Menu.
b Press a or b to choose 
Initial Setup.
Press OK.
c Press a or b to choose Dial Tone.
Press OK.
d Press a or b to choose Detection or 
No Detection.
Press OK.
e Press Stop/Exit.
Telephone line 
interference / VoIP B
If you are having problems sending or 
receiving a fax due to possible interference 
on the telephone line, you can change the 
compatibility setting, which reduces the 
modem speed to minimise errors.
a Press Menu.
b Press a or b to choose 
Initial Setup.
Press OK.
c Press a or b to choose 
Compatibility.
Press OK.
d Press a or b to choose Normal or 
Basic(for VoIP).
 Basic(for VoIP) cuts the 
modem speed to 9,600 bps and 
turns off ECM except for colour fax 
sending. Unless interference is a 
recurring problem on your telephone 
line, you may prefer to use it only 
when needed.
To improve compatibility with most 
VoIP services, Brother recommends 
changing the compatibility setting to 
Basic(for VoIP).
 Normal sets the modem speed at 
14,400 bps.
Press OK.
e Press Stop/Exit.
Note
VoIP (Voice over IP) is a type of phone 
system that uses an internet connection, 
rather than a traditional phone line.










