Aria Aria-130, Руководство по установке

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Aria-130 Digital Key Telephone System Issue: 1.2
Installation Manual
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3.3.2 RGU Installation
The Ring Generator Unit(RGU6) is needed in the 1st and 2nd KSU if SLIB24, SLIB48, SLIBII, SLIB2E
and DSIB are to be installed, to provide Ring voltage and Message Wait Source.
The internal RGU6 is fixed on the right bottom side panel with the two screws provided inside the KSU
and is connected to RGU (marking on PCB) connector on the system back-plane of KSU.
See Fig 3.3.7.
Figure 3.3.7 RGU Installation
A corresponding cable for connecting between external/internal RGU and KSU is provided with RGU in
the same package.
3.3.3 PFTU Installation
The PFTU provides the relay contacts for the direct connection of 6 Exchange Lines (CO Lines) to 6
Extension Lines (SLT Lines) in event of a power or processor failure. The PFTU can be optionally
installed on the right upper side of every KSU.
2 control wires are connected to the PFTU (marking on PCB) on back-plane of the system regardless of
the polarity of control wires. The PFTU connector is provided but control wires should be got locally. The
specification of control wires is AWG #22, #24 or #26 regardless of their length.
A RJ21 type connector, which consists of 25 pairs, is connected CO line, LCOB, SLIB and SLT as section
3.5.5 PFTU Wiring.