Tie Line (4Tliu) Pcb (Figure 2-31); 2.7.4.1 Led Indications - NEC UX5000 Hardware Manual

2.7.4

Tie Line (4TLIU) PCB (Figure 2-31)

The 4TLIU Tie Line PCB is an out band dial type analog tie line interface PCB. The PCB supports system
connections to either 2-wire (four lead, tip/ring) or 4-wire (eight lead, tip/ring/tip 1/ring 1) E&M signalling tie
lines (determined in system programming). System programming is also used to select the connection types
with Type 1 or Type V. Each PCB requires one universal slot and provides:
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4 analog 4-circuit tie line interfaces
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2 PCB status LEDs
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2.7.4.1 LED Indications

Live LED
(1 second)
Chapter 2
PCBs with "IP3NE" included as part of the PCB name printed on the card
cannot be combined with any "IP3WW" version cards. The "IP3NE" are U.S.
versions, while the "IP3WW" are international versions of the PCBs.
Limitation depends on the connecting Router, Multiplexer or Exchange. If the
UX5000 is connected to another UX5000 directly, up to 1,500 ohms loop
resistance (including system).
LED Indication
Busy LED
(green) (red)
On On
Flashing On
Flashing
(1 second)
Flashing On
(100 ms)
Off
Off On
Off
Flashing
(100 ms)
Operation Status
PCB Initializing
PCB assignment refused (system
capacity exceeded or software
version incorrect)
Trouble found during self-
diagnostics routine.
Normal Operation
Blocked PCB
Downloading firmware
Chapter 2 - PCB Installation and Startup
Operation Status
At least 1 channel busy
All channels idle
At least 1 channel busy
All channels idle
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