Toshiba Perception E Ex Digital Pbx Installation And Maintenance Manual

INSTALLATION INSTRUCTIONS 
SECTION 200-255-201 
FEBRUARY1992 
NDCU-Data Control Unit 
NDKU-Digital Telephone, Digital DSS, PDIU-DI, 
PDIU-DS Unit 
NDSU-DSS Console Controller Unit (Electronic 
Telephone) 
NDTU-Digital Trunk Unit 
NEKU-Electronic Telephone Unit 
NEMU-E & M TIE Trunk Unit 
NFDU-Floppy Disk Drive Unit 
NLSU-DID Trunk Interface Unit 
NMDU-Modem Pooling Unit 
NOCU-Off-hook Call Announce Interface Unit 
NPRU-Paging and Music-on-Hold Unit 
NPSA-M-PERCEPTlONe Main Power Supply...

INSTALLATION INSTRUCTIONS 
SECTION 200-255-202 
FEBRUARY 1992 
CHAPTER 2 
SYSTEM DESCRIPTION 
1. PERCEPTION, 
1.00 Basic Equipment Cabinet 
1 .Ol 
The basic equipment cabinet (NCEC-M) con- 
sists of a single, free-standing cabinet mounted on 
casters for easy movement. Once system installa- 
tion has been completed and the cabinet has been 
positioned, the casters can be locked to prevent 
movement. The interior of the cabinet houses two 
shelves for printed circuit card installation. A sepa- 
rate area...

INSTALLATION INSTRUCTIONS 
SECTION 200-255-202 
FEBRUARY1992 
FIGURE 
P-3-PERCEPTION, BASIC CABINET 
shelf. MDF connections are facilitated by amphe- 
nol connectors located on the rear of the cabinet 
(Figure Z-4). Up to two expansion cabinets may be 
added to the PERCEPTlONe, basic equipment 
cabinet. 
2.20 Power Supply 
2.21 
The Main Power Supply (LPSA-M) consists 
of a single metal chassis which contains the system 
ring generator and charger/inver&er for the Reserve 
Power. A circuit breaker...

avoid power degradation by supplementing the -24 
volts, maintaining a constant power level. 
4. EXTENDED RESERVE POWER 
4.00 The power supply is equipped, as a standard 
feature, with an internal battery chargemnverter. 
Full reserve power can be provided for any system 
by connecting an appropriate, customer-supplied 
24-volt battery pack. During normal operation, the 
power supply chargemnverter will maintain the 
proper charge in the battery pack. In the event of an 
AC power failure, switchover to...

INSTALLATION INSTRUCTIONS 
SECTION 200-255-202 
FEBRUARY 1992 
netted to ground-start trunks must have ground 
taps (tap buttons) in order to make outgoing calls 
during power fail transfer conditions. 
5.04 A transfer can be caused by a loss of power 
or triggered manually by either of two buttons, one 
of which is located on the underside of the atten- 
dant console and the other on the front of the NPRU 
PCB. A transfer that is caused by a power failure 
will be reset automatically when power is...

INSTALLATION INSTRUCTIONS 
SECTION 200-255-202 
JANUARY1993 
w.iu~t Z-I+PERCEPTION, PCB INSTALLATION 
NPRU (Paging and Music-on-hold Unit)-Houses 
program load and initialization control switches 
and performs several miscellaneous functions 
(up to two per system): 
l Paging interface and control 
l Music-on-hold interface 
l UNA control 
l Interface for the NRCU 
* Attendant Console Functions 
l Power Failure/Emergency transfer control 
l Digitized voice message for Automatic Wake- 
up (optional) 
NRCU...

INSTALLATION INSTRUCTIONS 
SECTION 200-255-202 
JANUARY 1993 
2) 
3) 
4) Option 2: Eight digital telephones with 
integrated Data Interface Unit (PDIU-DI) 
or Off-hook Call Announce. This position 
also supports Stand-alone Data Inter- 
face Units (PDIU-DS). 
Option 3: Four digital DSS consoles. In 
PERCEPTION, COO and CO1 may be 
used for this option only. 
Option 4: Eight digital DSS consoles. 
NOTE: 
When using Option 
2 or 4, the next highest 
number adjacent card slot cannot be used. 
For example:...

7. SYSTEM INDICATORS AND CONTROLS 
7.00 Several system indicators and controls are 
located on the various PCBs and assemblies. The 
locations and functions are: 
NFDU 
l Disk Drive LED-Will light to indicate when 
the disk is being accessed. 
l PUSH Button-Used to eject the diskette 
from the drive. 
LCCU 
MAJ LED-Lights when a MAJOR alarm 
exists in the system. 
MDR LED-Lights when the DTRsignalfrom 
the SMDR device is not present. An MDR 
alarm on the attendant console lights simul- 
taneously if...

INSTALLATION INSTRUCTIONS 
SECTlON200-255-202 
FEBRUARY1992 
l MFALM LED-indicates NDTU has not 
achieved Frame Synchronization. 
l YALM LED-Indicates a Yellow Alarm is 
detected by the NDTU. 
l BALM LED-Indicates a Blue Alarm is de- 
tected by the NDTU. 
l Signaling Type Selection Switches S4 w 
Sl l-Six-element DIP switches used to se- 
lect one of four available signaling modes, on 
a per channel basis, for each of the 24 NDTU 
channels. Available signaling modes are: 
CO (Loop Start) mode 
CO (Ground...

line cords. Digital telephones are connected to the 
system via 2-conductor modular line cords. In ad- 
dition, all models may be used at any or all stations. 
8.10 Headset Upgrade (HHEU) 
8.11 
Each electronic/digital telephone may also 
be upgraded to provide a modular headset jack by 
installing a headset upgrade assembly. The as- 
sembly consists of a small PCB (HHEU) which 
installs on the main PCB, inside the electronic or 
digital telephone, with a plug-in connector. Most 
standard headsets are...