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Set Telephone Line Compatibility for Interference and VoIP Systems
Problems sending and receiving faxes due to possible interference on the telephone line may be solved by reducing the modem speed to minimise errors in fax transmission. If you are using a Voice over IP (VoIP) service, we recommend changing the compatibility to Basic (for VoIP).
VoIP is a type of phone system that uses an Internet connection, rather than a traditional phone line.
Telephone providers frequently bundle VoIP together with Internet and cable services.
We do not recommend the use of a VoIP line. VoIP limitations in general can cause some functions of the fax machine not to work correctly.
- Press
. If your machine displays the [All Settings] menu on the Home screen, skip the [Settings] menu. - Press the option you want.
Select [High] to set the modem speed to 33600 bps.
Select [Normal] to set the modem speed to 14400 bps.
Select [Basic(for VoIP)] to reduce the modem speed to 9600 bps and turn off Error Correction Mode (ECM). Unless interference is a recurring problem on your telephone line, you may prefer to use this option only when needed.
- Press
.