1.2 Unit Overview - GE JungleMUX 86445-31 Technical Practice And Installation Manual

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 600Ω or 900Ω 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.
Copyright  GE Multilin Inc. 2002
342-86400-445PS
Issue 4.0
October 2006
Page 13