Telephone line interference

If you are having difficulty sending or receiving a fax due to possible interference on the telephone line, you can reduce the fax speed to minimise errors.
1
Press Menu, 2, 0, 1.
20.Miscellaneous
  1.Compatibility
Bsymbol.utri    High
Bsymbol.dtri    Normal
Select Bsymbol.utriBsymbol.dtri or OK
2
Press Bsymbol.utri or Bsymbol.dtri 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.
3
Press Stop/Exit.
Note Note
 
When you change the compatibility to Basic(for VoIP), the ECM feature is only available for color fax sending.