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 minimise errors in fax operations.
Press (Settings) > All Settings > Initial Setup > Compatibility.
Press the option you want.
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.
High set the modem speed at 33,600 bps.
Press (Home).
VoIP (Voice over IP) is a type of phone system that uses an Internet connection, rather than a traditional phone line.
(For some coutries)
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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(Settings) > All Settings > Initial Setup > Compatibility.
(Home).
