Brother DCP-110C - Manual (Page 175)

APPENDIX A A - 20
Recording outgoing message (OGM) on an external TAD
Timing is important in recording this message. The message sets up
the ways to handle both manual and automatic fax reception.
1
Record 5 seconds of silence at the beginning of your message.
(This allows your machine time to listen for the fax CNG tones
of automatic transmissions before they stop.)
2
Limit your speaking to 20 seconds.
We recommend beginning your OGM with an initial 5-second
silence because the machine cannot hear fax tones over a
resonant or loud voice. You may try omitting this pause, but if your
machine has trouble receiving, then you must re-record the OGM
to include it.