If you are having issues sending or receiving a fax due to possible interference on the telephone line or if you are using a VoIP system, we recommend changing the modem speed to minimize errors in fax operations.
Press Menu or Settings.
Press the Up or Down arrow key to select the following:
Select Initial Setup. Press OK.
Select Compatibility. Press OK.
Select Normal or Basic(for VoIP). Press OK.
Basic(for VoIP) reduces the modem speed to 9,600 bps and turns off color fax receiving(*) and Error Correction Mode (ECM), except for color fax-sending(*). Unless interference is a recurring issue on your telephone line, you may prefer use it only when needed.
To improve compatibility with most VoIP services, Brother recommends changing the compatibility setting to Basic(for VoIP).
*: Available only for Brother machines with color fax function.
Normal sets the modem speed at 14,400 bps.
Press Stop/Exit.
VoIP (Voice over IP) is a type of phone system that uses an Internet connection, rather than a traditional phone line.
(For some countries)
Brother does not recommend the use of a VoIP line. VoIP limitations in general can cause some functions of the fax machine not to work correctly.
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