Brother FAX-2440C - Manual (Page 183)

A - 11 APPENDIX A
Connecting an external telephone answering
device (TAD)
Sequence
You may choose to connect an additional answering device.
However, when you have an external TAD on the same telephone
line as the machine, the TAD answers all calls and the machine
“listens” for fax calling (CNG) tones. If it hears them, the machine
takes over the call and receives the fax. If it does not hear CNG
tones, the machine lets the TAD continue playing your outgoing
message so your caller can leave you a voice message.
The TAD must answer within four rings (the recommended setting is
two rings). The machine cannot hear CNG tones until the TAD has
answered the call, and with four 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 guide for recording your outgoing
message. We do not recommend using the toll saver feature on your
external answering machine if it exceeds five rings.
If you do not receive all your faxes, reduce the Ring Delay
setting on your external TAD.
If You Subscribe to your Telephone Company’s Distinctive Ring
Service:
You may connect an external TAD to a separate wall jack only
if you subscribe to your telephone company’s Distinctive Ring
service, have registered the distinctive ring pattern on your
machine, and use that number as a fax number. The
recommended setting is at least four rings on the external TAD
when you have the telephone company’s Distinctive Ring
Service. You cannot use the Toll Saver setting.