User's Manual

Connections 11
Installing an FCT connected to a PBX
The FCT is designed to provide a telephone line
(RJ11 connector) that behaves in the same way as an
analog trunk.
Generic requirements
The PBX should meet the following generic
requirements for FCT connectivity:
• The PBX must provide analog trunks. Otherwise,
the ISDN FI12 adapter accessory will be necessary.
See FCT accessories on page 38).
• One position of the trunk must be assigned to each
FCT terminal.
• The trunk card must support either Busy Tone
Detection (BTD) or Polarity Reversal Detection on
answer and release.
• The PBX can be programmed to utilize Least Cost
Routing (LCR), if available, to automatically choose
the FCT trunk when suitable.
• If the PBX does not offer LCR, choose the FCT
trunk manually with a special dialed prefix.
The F251m terminal is compatible with most analog
PBXs on the market and with most of the available
2B+D ISDN digital output trunks, via its accessory
ISDN FI12 adapter. See FCT accessories on page 38.
FCT connectivity to the analogue trunk of the PBX
FCT connectivity to the ISDN 2B+D trunk of the PBX
To carry out a correct FCT installation in a PBX,
please follow the FCT installation instructions
(Preparing your FCT and Installing the FCT on the
wall) and then refer to Using PBX on page 20.
GSM Network
FCTs
FI12
FI12
PBX
(LCR)
telephone line