Npru (Paging And Music-On-Hold Unit); Nrcu (Receiver Unit); Neku (Electronic Telephone Unit); Ndku (Digital Telephone Unit) - Toshiba Perfecptione Installation And Maintenance Manual

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 (Receiver Unit)-Two per NPRU (4 per
system maximum): This card provides DTMF
receivers, which are required for receiving tone
dialing from standard telephone ports (including
voice mail ports) and some incoming trunk (DID,
TIE and CCSA) types. It also provides the capa-
bility for remote access to service. It mounts
piggy-back on the NPRU PCB, where there is
available space for two NRCUs. Each NRCU
provides four DTMF receiver circuits, with a
system maximum of 16.
NOTE:
When using the Call Forward-No Answer to
Trunk feature, an NRCU MUSTbe installed in
the system.
NEKU (Electronic Telephone Unit)-One per
eight electronic telephones: Interfaces electronic
telephone to the system. It also serves as an
attendant console interface. Each attendant con-
sole requires one electronic telephone circuit.
PERCEPTION,
ATT #O-PCB position LOO circuit #1
ATT #1 -PCB position L15 circuit #l
A maximum of 12 NEKU/NDKU PCBs may be
installed in each cabinet (24 NEKU/NDKU PCBs
maximum per system).
PERCEPTION,
ATT #O-PCB position UOO circuit #1
AIT #l -PCB position UOl circuit #l
A maximum of 16 NEKU/NDKU PCBs can be
installed in the PERCEPTIONex basic cabinet,
and eight in each expansion cabinet.
NDKU (Digital Telephone Unit)-A 2B+D archi-
tecture is used to interface up to 8 or 16 circuits
for the Digital Telephone and Integrated Data
Interface Unit (PDIU-DI), Stand-alone Data In-
terface Unit (PDIU-DS), or Digital Direct Station
Selection Console. Digital telephones and digital
DSS consoles cannot be interfaced to the same
NDKU PCB. Four configuration options are
switch-selectable as follows:
1) Option 1: Eight digital telephones only.
2-5