ECM (Error Correction Mode)
The Error Correction Mode (ECM) is a way for the MFC to check a fax transmission while it is in progress. ECM transmissions are only possible between machines that both have this feature. If they do, you may send and receive fax messages that are continuously being checked by the machine.
Your MFC must have enough memory for this feature to work.
Connecting the MFC
Connecting an External Telephone
Although your MFC does not have a handset, you can connect a separate telephone (or telephone answering device) directly to your MFC.
Connect the modular plug on the telephone’s line cord to the jack labeled EXT. on the left side of the MFC.
Whenever this phone (or TAD) is in use, the LCD shows TELEPHONE.
Connecting an External Telephone Answering Device (TAD)
Sequence
You may choose to connect an answering system. However, when you have an external TAD on the same telephone line as the MFC, the TAD answers all calls and the MFC “listens” for fax calling (CNG) tones. If it hears them, the MFC takes over the call and receives the fax. If it doesn’t hear CNG tones, the MFC lets the TAD continue playing your outgoing message so your caller can leave you a voice message.
The TAD must answer within five rings (the recommended setting is two rings). The MFC cannot hear CNG tones until the TAD has answered the call, and with five rings there are only 8 to 10 seconds of CNG tones left for the fax “handshake”. Make sure you carefully follow the instructions in this manual for recording your outgoing message. We do not recommend using the toll saver feature on your external answering machine if it exceeds five rings.
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