Nitsuko 24i/28i/124i/384i Hardware Manual

INSTALLING PCBs
2. PCB Installation
and Startup
2-18 Figure 2-11  T1/PRI Interface (PRIU) PCB
4
3
2
1Pin 1=Tip
Pin 2=Tip 1
Pin 3=Ring
Pin 4=Ring 1 

2. PCB Installation
and Startup2-19
INSTALLING PCBs
T1 to T1 Cable Pin Out(Figure 2-12)
When making a cable for T1 to T1 connections, using a DB-15
female to DB-15 female cable, the pin out should be made
according to the information below. The example is shown with
the 384i system, but the pin out information is the same for the
124i system.
The remaining pins have no connection. This cable may only be
used in tying two T1 cards together locally. It CAN NOT be
used to tie two T1 cards together through...

INSTALLING PCBs
2. PCB Installation
and Startup
2-20
BRI (BRIU) Interface PCB (Figure 2-13, 2-14)
Note:For BRI, please consult with your Nitsuko
Representative for availability.
The BRI (BRIU) PCB provides two 2-channel circuits for con-
necting to ISDN BRI services. Supported BRI services are:

Basic BRI Call Control (BCC)


Point-to-Point BRI Terminal Connection (no daisy-chaining)


Multipoint BRI Terminal Connection (daisy-chaining)
The BRI Interface PCB has two circuit status LEDs on the out-
board...

2. PCB Installation
and Startup2-21
INSTALLING PCBs
Figure 2-14  BRI Interface T-Bus Point-to-Point
926 - 80
TO TELCO BRI line Terminal Terminal Line
8-Pin Line Cord
(Normally On)Sync LED Circuit 1
Circuit 1
Circuit 2(Normally On)Sync LED Circuit 2(Normally Flashing)Status LED 
SelectedS-Bus 
SelectedT-Bus 
Circuit 2 
Circuit 1 Typical T-Bus Point-to-Point Configuration
Note:The BRIU PCB provides two 2-channel BRI circuits. 

INSTALLING PCBs
2. PCB Installation
and Startup
2-22
Analog Station (ASTU) PCB (Figure 2-15)
The Analog Station (ASTU) PCB provides DDK connectors for
four analog telephones, fax machines, voice mail ports, or
modems.
28i System
The 28i system allows for a maximum of 2 4ASTU to be
installed. The system automatically designates 8 ports for the
4ASTU, but only uses 4 of them. Therefore, the next slot will
start with the following group of 8. For example, if the 4ASTU
is installed in slot 2 (ports 309-312),...

2. PCB Installation
and Startup2-23
INSTALLING PCBs
To install an ASTU PCB:
1.28i:Plug 4ASTU PCBs into slots 2-5 in the KSU (2 station
PCBs maximum per system).
124i:Plug ASTU PCBs into slots 1-8 in any installed cabi-
net (15 maximum with DSTU installed/16 without DSTU
installed).
2. Refer toPart 3: Installing Extensions and Trunks for cabling
instructions.
Figure 2-15  ANALOG STATION (ASTU) PCB
Analog Station (ASTU) PCB
Status LEDAnalog Station 4
Analog Station 3
Analog Station 2
Analog Station 1
92001...

INSTALLING PCBs
2. PCB Installation
and Startup
2-24
Analog Trunk (ATRU) PCB (Figure 2-16)
The Analog Trunk (ATRU) PCB provides DDK connectors for
four analog trunks and a Power Failure Telephone. 
To install an ATRU PCB:
1.28i:Plug 4ATRU PCBs into slots 2-5 in the KSU (4 trunk
PCBs maximum per system).
124i:Plug ATRU PCBs into slots 1-8 in any installed cabi-
net (13 maximum).
2. Refer to Part 3: Installing Extensions and Trunks for cabling
instructions. Refer to Part 4: Installing Optional Equipment...

2. PCB Installation
and Startup2-25
INSTALLING PCBs
Caller ID (4CIDU) Daughter Board (Figure 2-17)
The Caller ID daughter board allows the system to display
Caller ID information. Each daughter board is installed on a
4ATRU PCB. The Caller ID PCB provides Caller ID capability
for all four trunk circuits on the 4ATRU PCB. Every 4ATRU
PCB installed in the system can have a Caller ID daughter board
attached. With the Caller ID daughter board plugged in, the
4ATRU PCB can not have ground start operation. On...

INSTALLING PCBs
2. PCB Installation
and Startup
2-26
Ground Start (4GSAU) Daughter Board (Figure 2-18)
The Ground Start daughter boards convert the four analog loop
trunks on each 4ATRU into ground start trunks. The Ground
Start daughter board is installed on the 4ATRU PCB. It is possi-
ble, but not required, that every 4ATRU PCB in the system can
have a Ground Start PCB.
Important Notes:

If you install a Ground Start PCB on a 4ATRU PCB, the
trunk ports associated with that card can not have Caller ID....

2. PCB Installation
and Startup2-27
INSTALLING PCBs
Figure 2-18  GROUND START (4GSAU) PCB
P/N 82492
1 2
1 2
1 2
1 2
92001 - 70
CN2
CN4CN1
CN5 Push PCB down until standoffs
snap into place.