Installing Ndtu - Toshiba Perfecptione Installation And Maintenance Manual

PERCEPTIONeb,,
Tl/OS-1
SEPTEMBER 1991
3.20 Installing NDTU
3.21 The installation of NDTU MUST be done in
conjunction with
NTWU-3
and the D.O1, or higher-
level software.
WARNING!
Hazardous voltage that may cause death
or injury is exposed at the power supply
AC terminal.
1) Install NDTU in position TOO in the main cabi-
net, and/or TO8 in the expansion cabinet.
2) The NDTU PCB can support 24 trunks of
different types (CO, DID, TIE).
3) If all 24 trunks are used, DO NOT insert any
PCBs in the next five trunk slots after TOO or
T08.
NOTES:
When programming the trunks assigned to
the NDTU PCB, please keep the following in
mind:
1. If the PERCEPT/ON system is NOT con-
nected to a live Tl span, there are two
options to consider:
l
Set the NDTU for Loop Back testing
(see Paragraph 3.70) and program the
trunks, or
l
Place an analog trunk PCB in slot TOO
or TO8, and program the four circuits on
the PCB. Then remove the analog trunk
PCB, insert the NDTU PCB, and pro-
gram the rest of the trunks.
2. If the PERCEPTION system is connected
to a live Tl span, the NDTU can be in-
stalled and programmed in the normal
manner,
4) If less than 24 trunks (in multiples of four) are
used, utilize the remaining slots for the desig-
nated application as defined in the Installation
section (Chapter4) of the PERCEPTIONe&ex
installation and Maintenance manual.
5) Connect the provided coax clock cable be-
tween the NDTU (J3) and NTWU-3 (J2) PCBs
for the first span.
6) If two Tl spans are used, the NDTU con-
nected to the best clock source should be
cabled to the NTWU-3 (primary span).
3.30 Connecting to Channel Service Unit
3.31 The CSU/DSU (Channel Service Unit/Data
Service Unit) provides an electrical protection, a
keep-alive signal, and a repeater function. The
CSU can still be network powered per FCC require-
ments. The DSU provides the physical conversion
(V.35 or RS449/422 to DSI), "ONE" density, and
D4 or ESF (Extended Super-frame) framing (see
Figure 5 and Attachment A).
PERCEPTIONeaex
FIGURE 5-DS-1 CONNECTION TO DIGITAL
NETWORK
WARNING!
Hazardous voltage that may cause death
or injury is exposed at the power supply
AC terminal.
1) Use the cable provided with the NDTU
PCB to connect the PERCEPTIONekex
cabinet to the CSU.
2) Connect the 50-pin amphenol to the PBX (see
Table 4).
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