Brother MFC-9450CDN - Manual (Page 142)

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Setting dial tone detection
C
Setting the dial tone to Detection will
shorten the dial tone detect pause.
a
(USA) Press Menu, 0, 4.
(Canada) Press Menu, 0, 5.
Initial Setup
4.Dial Tone
b
Press a or b to choose Detection or
No Detection
Press OK.
c
Press Stop/Exit.
Telephone line interference
C
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).
„ 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.
Press OK.
c
Press Stop/Exit.
Note
When you change the compatibility to
Basic(for VoIP), the ECM feature is
only available for color fax sending.