56
MultiFRAD 3000-Series User Guide

FXO Interface

The FXO Interface is used to connect PBX extensions or central office telephone lines. You also,
need to select DTMF or Pulse dialing in the Regeneration field of the Dialing Options group. If you
are unsure of the correct selection, contact the personnel in charge of your PBX or your local
telephone company to determine whether pulse or DTMF should be used.

E&M Interface

The E&M Interface is used to connect PBX E&M trunks. You will need to select between Dial Tone or
Wink signaling and also between 2-wire and 4-wire mode. If wink signaling is selected, the wink
timer field becomes active with a range from 100 to 350 milliseconds. Contact the personnel in
charge of your PBX to determine the proper configuration of these settings.
Voice/Fax
The Voice/Fax tab controls the voice coder, Fax settings, DTMF gain, and some miscellaneous
options.
The MultiFRAD supports many state-of-the art ITU (International Telecommunications Union) voice
standards. The Voice Coder drop-down menu enables you to select from a range of standards with
specific bandwidths. The higher the bps rate, the more bandwidth is used. The channel that you are
calling has to have the same voice coder selected.
The Fax group enables a fax machine to transmit and receive faxes through the MultiFRAD. If a fax
machine is connected to one of the voice/fax channels, the Max Baud Rate should be set to match
the baud rate of the fax machine. This setting should be changed only under the direction of Multi-
Tech’s T echnical Support personnel (see Chapter 6).