Telephone line interference- Page 120

106

Telephone line interference

B

If you are having difficulty sending or 
receiving a fax due to possible interference 
on the telephone line, we recommend that 
you adjust the Equalization for compatibility 
to reduce the modem speed for fax 
operations.

a

Press 

Menu

, 

2

, 

0

, 

1

.

Miscellaneous
1.Compatibility

b

Press 

a

 or 

b

 to choose 

Basic(for VoIP)

 or 

Normal

 or 

High

 (MFC-7840W).

„

Basic(for VoIP)

 cuts the 

modem speed to 9600 bps. and 
turns the error correction mode 
(ECM) off.

For a standard telephone line: If you 
regularly experience interference on 
your standard telephone line try this 
setting.

If you are using VoIP: VoIP service 
providers offer fax support using 
various standards. If you regularly 
experience fax transmission errors 
try this setting.

„

Normal

 sets the modem speed at 

14400 bps.

„

High

 sets the modem speed at 

33600 bps. (MFC-7840W only)

Press

OK

.

c

Press 

Stop/Exit

.

Note

When you change the compatibility to 

Basic(for VoIP)

, the ECM feature is 

not available.