NEC UX5000 - LED Indications; Tie Line (4 TLIU) Blade (Figure 2-34) - P;N 0911056

Chapter 2 - Blade Installation and Startup
Chapter 2 2 - 73
2.7.4
Tie Line (4TLIU) Blade (Figure 2-34) - P/N 0911056
The 4TLIU Tie Line blade is an out band dial type analog tie line interface blade. The blade 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, Program 10-03). System programming is also used to select the
connection types with Type 1 or Type V. The 4TLIU consumes 4 ports ranging between ports 001-200. Each
blade requires one universal slot and provides:
● 4 analog 4-circuit tie line interfaces
● 2 blade status LEDs
2.7.4.1 LED Indications
LED Indication
Operation Status Operation Status
Live LED
(green)
Busy LED
(red)
On On Blade initializing
Flashing
(1 second)
On Blade assignment refused (system
capacity exceeded or software
version incorrect)
Flashing
(1 second)
Trouble found during self-
diagnostics routine.
Flashing
(100 ms)
On Normal operation At least 1 channel busy
Off All channels idle
Off On Blocked blade At least 1 channel busy
Off All channels idle
Flashing
(80 ms on/
off x 3/400
ms off)
Downloading firmware
● Blades with “IP3NE” included as part of the blade name printed on the card
cannot be combined with any “IP3WW” version blades. The “IP3NE” are U.S.
versions, while the “IP3WW” are international versions of the blades.
● Limitation depends on the connecting Router, Multiplexer or Exchange. If the
UX5000 is connected directly to another UX5000 directly, there is up to 1,500
ohms loop resistance (including system).