
Chapter 3: CallFinder Server Installation
Multi-Tech Systems, Inc. CF220-DID CallFinder User Guide 22
Installation, Part A: Cabling Instructions
Summary: Place the CallFinder in a convenient location, and then connect it to earth ground, to your AC
power outlet, to your Ethernet network, and to your telco DID service. You cannot connect the
CallFinder's Extension Ports (FXS/FXO) to your PBX until after you have configured the CallFinder
software. In the CallFinder software, you will configure the Extension Ports as either FXS or FXO, and this
must be done before they can be connected to your PBX.
1. Connect CallFinder to Earth Ground
Connect the CallFinder’s ground connector to a true earth ground (the ground of your building’s electrical
system).
Figure 3-1: Grounding the unit
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