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 the central office.
Figure 2-12  T1 to T1 Cable Pin Out
3
1
11 9
9200 - 266
31
11 9
DB-15 Female Connector
384i
SystemT1 Card
384i
System Pin 1
Pin 3
Pin 9
Pin 11toDB-15 Female Connector
Pin 3
Pin 1
Pin 11
Pin 9
DB-15 Male Connector
(connects to DB-15 Female Connector) 
						

							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 edge of the card. An additional LED shows when the
PCB is in or out of service.
The BRI Interface PCB connects to the network via an NT1
Network Termination. Each PCB uses up 4 trunk ports.
To install a BRI Interface PCB:
1. Set the switches on the BRI PCB for either S-Bus or T-Bus
use.
2.28i:Plug BRI PCBs into slots 2-5 in the KSU (4 trunk PCBs
maximum per system).
124i:Plug the BRI PCB into slots 4-8 slots of any installedcabinet (15 maximum).
3. Connect an 8-pin line cord to the BRI PCB. See the figure
below for the line cord connection. Connect the opposite end
to the NT1 Network Termination Connection.
Figure 2-13  8-Pin Line Cord
4. Connect a line cord from the NT1 Network Termination to
the telco BRI line.
Pin 8 - Grey
Pin 7 - Orange
Pin 6 - Black
Pin 5 - Red
Pin 4 - Green
Pin 3 - Yellow
Pin 2 - Blue
Pin 1 - BrownPin 1 - Brown
Pin 2 - Blue
Pin 3 - Yellow
Pin 4 - Green
Pin 5 - Red
Pin 6 - Black
Pin 7 - Orange
Pin 8 - Grey8-Pin Line Cord Connections
926 - 70 
						

							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), slot 3 will start with port
317. This provides the system with a maximum of 8 analog
ports.
124i System
When installing an ASTU PCB in slots 1-3 in any cabinet of the
124i system, the system automatically designates 8 ports for the
ASTU, but only uses 4 of them. Therefore, the next slot will
start with the following group of 8. For example, if the ASTU is
installed in slot 2 (ports 309-312) in the first cabinet, slot 3 will
start with port 317.
The ASTU PCB can provide a maximum of 72 analog ports.
The analog ports can be configured as follows:14 ASTU’s with 2 DSTU’s and 8  72 ports
2-OPX Modules
15 ASTU’s with a DSTU installed 60 ports
16 ASTU’s without a DSTU installed *64 ports
To reach these maximums, the ASTU’s must be installed in
slots 4-8 in the three cabinets. If using 16 ASTU’s, the last PCB
is installed in slots 1, 2, or 3.
*It is possible, but not recommended for most customer sites,
to have up to 64 analog ports using 16 ASTU PCBs. With this
configuration, there can not be a DSTU PCB installed, which
is required for system programming.
Continued on next page. . . 
						

							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 - 36 
						

							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
for instructions on connecting the Power Failure Telephone.
On initial power-up with a cold start(28i:hold down the
Cold Start switch / 124i:CPRU Mode Switch set to Cold), the
slot into which you plug a trunk PCB determines its associat-
ed trunk numbers. The system scans for trunk PCBs from the
lowest slot in the first cabinet (Main) to the highest slot in the
last cabinet (Expansion # 2). The first trunk PCB the system
finds gets trunk numbers 1-4. The next slot gets trunk num-
bers 5-8, etc.
After initial power up (28i Hot Start without holding down any
switch / 124i:CPRU Mode Switch set to Hot), any new trunkPCBs you plug in automatically add to the top of your trunk
number list. For example, if your highest trunk port is 8, any
new trunk PCB you plug in will start with trunk number 9. This
is true regardlessof the slot number used.
Figure 2-16  ANALOG TRUNK (ATRU) PCB
Status LED
Fuses for Trunk ProtectionPower Failure 
Telephone
Trunk 4
Trunk 3
Trunk 2
Trunk 1
Analog Trunk (ATRU) PCB
92001 - 37 
						

							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 the 28i,
the maximum number of PCBs allowed per system is 4. For the
124i, the maximum number of PCBs per system is 13.
To install an ATRU PCB:
1. Remove the 4ATRU PCB.
2. Align the Caller ID PCB standoffs over the holes located in
the 4ATRU PCB.
The CN2 connector on the Caller ID PCB should be
above the CN4 connector on the 4ATRU PCB and CN1
should be above CN5.
3. Push the PCB down until the standoffs snap into place.
4. Plug the 4ATRU PCB back into the system cabinet.Figure 2-17  CALLER ID (4CIDU) PCB 
						

							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.


When a Ground Start PCB is installed on a 4ATRU PCB, all
the trunk ports on that card must be ground start trunks. It is
not possible to mix loop start and ground start trunks on the
same card.


The Ground Start PCB is polarity sensitive and requires the
tip and ring to be connected properly.
To install a Ground Start PCB:
1. Remove the 4ATRU PCB.
2. Align the Ground Start PCB standoffs over the holes located
in the 4ATRU PCB.
The J1 connector on the Ground Start PCB should beabove the CN4 connector on the 4ATRU PCB and J3
should be above CN5.
3. Push the PCB down until the standoffs snap into place.
4. Plug the 4ATRU PCB back into the system cabinet.
5. Refer to Part 3: Installing Extensions and Trunks for cabling
instructions. 
						

							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.