If you are having problems 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.
1 | Press Menu, 2, 0, 2. |
2 | Press  or  to choose Normal (or Basic(for VoIP)). • | Basic(for VoIP) cuts the modem speed to 9600 bps. Unless interference is a recurring problem on your telephone line, you may prefer to use it only when needed. | • | Normal sets the modem speed at 14400 bps. (Default) |
Press OK. |
3 | Press Stop/Exit. |

Note
| When you change the compatibility to Basic(for VoIP), the ECM feature is only available for colour fax sending. |