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

2.2 UNIT OVERVIEW

The 86445-32 2W FXS/PLAR unit provides the interface between two 2-wire VF
lines with FXS (Foreign Exchange Station) or PLAR (Private Line Automatic
Ringdown) signaling and a JungleMUX node.
The unit is equipped with two on-board DC-DC converters (one for each 2-wire
line) providing talk battery voltage (-48 Vdc) and ringing voltage (70 Vac, 20 Hz).
Each of the two lines supported by the 86445-32 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 two VF channels and occupies one DS0 channel for each VF
channel provisioned.
86445-4X 2W FXO unit(s), 86445-3X 2W FXS unit(s), or 86444-07 4W VF unit(s)
at the far end.
Transmit level (-9.5dBm to +5.0dBm) and receive level (-15.0dBm to +5.0dBm)
are software adjustable in 0.1 dB increments. The unit can be set for either µ-law
or A-law companding.
The unit's line impedance can be set to either 600Ω or 900Ω with or without
2.16 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 nF, 4.7 nF or 10 nF.
The unit's front panel yellow LEDs provide visual indication of the lines' signaling
status (idle, ringing, off-hook) while the red LED indicates the presence of unit
alarm.
A front panel bantam jacks allow access to the 2W VF ports on a splitting or
bridging basis (user-configurable).
The unit setup and signaling status is reported via VistaNET.
Customer connections to drop equipment are made on the 86445-92
paddleboard assembly, which is required for each 86445-32 2W FXS unit.
Copyright  GE Multilin Inc. 2002
Depending on the application, it can be used with
342-86400-445PS
Issue 4.0
October 2006
Page 50