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System Setup and Administration
2. How will you connect the NGX card to your PBX and phones? There
are three possibilities:
a) Y-Splitter: A Y-Splitter is inserted between the PBX and the punch-down
blocks that breaks out to phones. This is the optimal solution.
b) Bridge Clips: The second leg of the punch-down block receives a
duplicate PBX signal from the first leg through bridge clips. Depending on
the quality of the components, this method may cause mild signal
degradation.
c) Dual Punch-down Blocks: The PBX signal is duplicated by wiring each
channel on the main punch-down block to a second punch-down block. This
solution is the least desirable method.
These three possibilities described in detail in the following sections.
Using a Y-Splitter
An RJ-21X Y-Splitter is inserted between the PBX and the punch-down
blocks that breaks out to phones. It is preferable that the splitter be as close
to the PBX as possible. The PBX plugs into the first RJ-21X connector on
the Y-Splitter, after which the NGX and punch-down block can connect to
either of the remaining connectors on the Y-Splitter. This configuration
offers the most flexibility. It allows the NGX to passively tap the PBX
without having to interface to the punch-down block. The signal quality is
optimized because it is routed to the NGX before reaching the punch-down
block.
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Standard 3.0
Nortel TDM Recorder
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