If the unit is to be attached to the telephone company’s termination point (De-mark) then refer to Figs 6 and 7 below. The diagrams show wiring coming into the building consisting of pairs of solid wire attached to a punch down block. A series (pass through) connection is recommended since the unit will operate properly even if it has to be reconfigured to a current detection mode (see page 40). But in many cases, a parallel (tap, half-tap, split, or tee) connection is easier and will suffice.
When a telephone switch (Key Switch, PBX) is on-site, make sure that the unit is wired “in-front” of the switch (i.e. between the De-mark and the switch). The unit will not capture Caller ID data if connected to switched extension lines. Refer to page 4 for compatibility with different type of phone lines.
Figure 3. Series Connection for Commercial Installs
Lines coming into the building from the telephone company are connected to the input jacks on the monitoring unit. If these lines do not terminate in modular connectors, solid wire to modular adapters need to be installed. The output lines from the unit go to the desktop phones. If a telephone switch is present, they connect through the switch first. A series connection is necessary only if the unit has been set to current detection mode via internal jumpers.
Figure 4. Parallel Connection for Commercial Installs
Lines coming into the building from the telephone company are connected to the telephone switch or directly to desktop phones. These lines are branched (or tapped) so that they can be connected to one jack of the monitoring unit. If these lines are not modular, solid wire to modular adapters need to be installed. A parallel connection can be used only if the unit is configured to its factory default voltage detection mode.