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342-86400-445PS
Issue
4.0
October
2006
Page
13
Copyright
GE Multilin Inc. 2002
1.2 UNIT OVERVIEW
The 86445-31 2W FXS/PLAR unit provides the interface between a 2-wire VF
line with FXS (Foreign Exchange Station) or PLAR (Private Line Automatic
Ringdown) signaling and a JungleMUX node.
The unit is equipped with an on-board ringing generator and talk battery.
Optionally, an external ringing generator and talk battery can be connected
instead.
The 86445-31 FXS unit can be configured for one of the following modes of
operation:
•
2W FXS/LS for loop start signaling applications
•
2W FXS/GS for ground start signaling applications
•
2W PLAR for private line automatic ringdown applications
The unit supports one VF channel and occupies one DS0 channel on a JVT bus.
Depending on the application, it can be used with 86445-4X 2W FXO unit,
86445-3X 2W FXS unit or 86444-07 4W VF unit at the far end.
Transmit level (-14.0dBm to +6.0dBm) and receive level (-15.0dBm to +5.0dBm)
are software adjustable in 0.1 dB increments.
The unit's line impedance can be set to either 600
Ω
or 900
Ω
with or without
2.15 µF of line capacitance connected in series. Additional capacitance, called
Network Build-out Capacitance (NBOC), can be used for line capacitance
compensation. This is selectable to 0, 22, 47 or 69 nF.
A front panel yellow LED, when steady on, indicates the busy state of the Tip and
Ring terminals. Blinking yellow LED indicates either dial pulsing or ringing.
A front panel bantam jack allows access to the 2W VF port on a splitting or
bridging basis (user-configurable).
The unit setup and signaling status is reported via VistaNET or via legacy JCI
and JNCI software.
Connections to drop equipment are made on the 86445-91 paddleboard
assembly, which is required for each 86445-31 2W FXS unit.