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INSTALLATION INSTRUCTIONS
SECTION 200-255-204
JUNE1992
-Tl
0
NTWU3
FIGURE 4-14-NTWU STRAPPING
NOTE:
DROM on/y required for digitized voice on
automated wake-up calls.
3.32 If NRCUs are to be installed, mount them on
the NPRU. The first NRCU mounts on connector
J3, the second on J4 (see Figure 4-16).
3.40 NEKU, NDKU, and NOCU
3.41 Install the NEKU in any of the line designated
slots LOO N Lll or L15 m L26 in PERCEPTlONe. If
an attendant console is used, an NEKU must be
installed in slot LOO. If a second attendant console
is installed, a second NEKU must be installed in slot
L15. Attendant consoles must be installed on cir-
cuit 1 in both slots.
FIGURE 4-15-NPRU STRAPPING
FIGURE 4-16-NRCU MOUNTING
3.42 For PERCEPTlONe,, install the NEKU in any
designated slot UOO N U31. To utilize attendant
consoles, install NEKUs in the following slots:
AlT#O-PCB position UOO Circuit #l
ATT#l -PCB position UOl Circuit #l
3.43 There are no straps on the NEKU PCB for
either system.
3.44 Install the NDKU in any of the line designated
slots LOO m Lll orL15 w L26 in PERCEPTlONe.
For PERCEPTlONe,, install the NDKU in any des-
ignated slots UOO W U31. Some options require
adjacent PCB slots be left vacant.
3.45 The NDKU employs a 2B+D architecture for
each circuit that must be configured for one of four
different operating options using the dip switch Sl
(Figure 4-l 7) as follows:
IPTION
S-l POSITION
OPERATION
1
DIP switches 1 - 4: ON
DKT only
DIP switches 2
4: ON
-
2
DKT with DIL
DIP switch 1: OFF
or OCA
3
DIP switchesl, 3, and 4: ON
DIP switch 2: OFF
4 DSS only
I
1 I
4
DIP switches 1 and 2:OFF
DIP switches 3 and 4: ON
8 DSS only
1) OPTION 1: Eight digital telephones only: this
option uses one of the two B channels for each
circuit to interface up to eight lOOO-series
digital telephones.
4-11
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