NEC UX5000 Hardware Manual

2 - 80 Chapter 2
Chapter 2 - Blade Installation and Startup
2.7.5.1 Setting the SW1-SW2 Switches
In the following cases, the SW1-SW2 switches (6-8 bits on both SW1 and SW2) should be set to the
ON position (default):
● When the channel is assigned as a T-Bus Point-to-Point.
● With T-Bus Point-to-Multipoint and if the system is connected at the end of the
multipoint.
Otherwise, the SW1-SW2 switches should be set to the OFF position. If the last port of the ISDN
terminal is connected to a modular rosette with a termination resistor or when using an ISDN
terminal which provides a termination resistor, refer to the ISDN terminal documentation for further
details.
2.7.5.2 LED Indications
Switch Name
Switch
Position
Result Comments
SW1
(#1)
1-5 S/T Normal - S/T point interface
U Use DSU This is not used in the U.S.
6-8 TR ON Termination Resistor Set
TR OFF No Termination Resistor
SW2
(#2)
1-5 S/T Normal - S/T point interface
U Use DSU This is not used in the U.S.
6-8 TR ON Termination Resistor Set
TR OFF No Termination Resistor
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)
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NEC UX5000 Specifications

General

Brand	NEC
Model	UX5000
Category	Telephone
Language	English