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

							INSTALLING PCBs
2. PCB Installation
and Startup
2-8 Figure 2-5 Connecting a Modem to LAPBU Module124i System
To install the Remote Programming (LAPBU) Module:
1. Plug the Remote Programming Module into the headers on
the left side of the CPRU PCB as shown in Figure 2-3.
92700 - 16
25 Pin Male-to-Male Connector
(P/N 92268A)Modem625
Modular
Jack9 Pin Male-to-25 Pin 
Female Connector 9 Pin RS-232 Cable
(P/N 92707) 25-Pair
Cable 8 CPRU PCB 
LAPB PCB  8 DSTU PCB 
Station
Cable  66MI-50
Station Block  
						

							2. PCB Installation
and Startup2-9
INSTALLING PCBs
28i System: Central Processing Unit (CPRU)
PCB(Figure 2-6)
Plug the CPRU PCB into the CPRU slot (Slot 1) in the KSU.
The CPRU provides:
The system’s central processing, stored program and memory
for the customer’s site-specific data.
Mode switch for cold (default data) start on power-up.
Reset switch to allow the system to be reset without powering
down.
Battery for short term (14 day) backup of the customer’s site-
specific data.
Music on Hold jumper which allows you to select an external
or internal source for Music on Hold.
Volume Control for Music on Hold.
DDK connectors for external Music on Hold/Background
music source. The MOH music source can optionally be
internal or connected to a 3-ACI Module. Refer toMusic on
Holdin the Software Manual for more.
DDK connectors for eight digital telephones, VAU, 3-ACI, 
3-DCI, or 2-OPX modules.
An additional connector for the DIM-U diagnostic unit.Figure 2-6  CPRU PCB
92700 - 03
Power OnDIMU
Connector
ProcessorBattery
Internal
MOH
Enabled
External
MOH
Enabled
MOH
Volume
ControlExternal Music
on Hold Input Digital Stations
1-8 LAPB
Connector
Reset
Switch
Cold
Start 
						

							INSTALLING PCBs
2. PCB Installation
and Startup
2-10 To install the 28i system’s CPRU PCB:
1. Insert the battery into the battery clips.
2. Plug the CPRU into KSU CPRU slot (Slot 1).
3. When powering up, hold down the COLD switch on the CPRU.
This ensures that the system will load the default data-
base on initial power-up.
On initial power up(with a cold startup), the system scans for
station ports from the lowest slot to the highest slot, so the first
8 station ports on the 24CPRU are assigned extension numbers
301-308 automatically. The next station card that follows, no
matter which slot it’s in, starts at extension 309.
Refer to Part 4, Installing Optional Equipmentfor instructions
on installing Background Music and Music on Hold. 
						

							2. PCB Installation
and Startup2-11
INSTALLING PCBs
124i System: Central Processing Unit (CPRU)
PCB(Figure 2-7)
Plug the CPRU PCB into the CPRU slot in the Main Cabinet.
The CPRU provides:

The system’s central processing, stored program and memory
for the customer’s site-specific data.


Mode switch for hot (customer data) or cold (default data)
start on power-up.


Battery for short term (14 day) backup of the customer’s
site-specific data.


Music on Hold jumper which allows you to select an exter-
nal or internal source for Music on Hold.


Volume Controls for Music on Hold and Background Music.


DDK connectors for external Background Music or Music on
Hold music sources. The MOH music source can optionally
be internal or connected to a 3-ACI Module. Refer toMusic
on Holdin the Software Manual for more.


An additional connector for the DIM-U diagnostic unit.
Figure 2-7  CPRU PCB 
						

							INSTALLING PCBs
2. PCB Installation
and Startup
2-12 To install the 124i system’s CPRU PCB:
1. Slide the Mode Switch to the Cold position.
This ensures that the system will load the default data-
base on initial power-up. After initial power-up, you
must change the Mode Switch to Hot.
2. Insert the battery into the battery clips.
3. Plug the CPRU into Main Cabinet CPRU slot.
Refer to Part 4, Installing Optional Equipmentfor instructions
on installing Background Music and Music on Hold. 
						

							2. PCB Installation
and Startup2-13
INSTALLING PCBs
Upgrading CPRU Firmware (Figure 2-8, 2-9)
Use these instructions when upgrading the Software EPROMs
on the CPRU PCB. The new EPROMs in the upgrade kit are
static-sensitive components. Be sure to follow the instructions
below carefully. Failure to follow proper anti-static precau-
tions could damage your new software.
To upgrade CPRU Firmware:
1. Attach a grounded wrist strap to your wrist and a grounded
metal object (such as CEU ground).
2. If the system is currently powered up, unplug the system in
the following order - main cabinet, first expansion cabinet,
then the second expansion cabinet.
3. Lay the CPRU PCB on a flat, anti-static surface oriented as
shown in Figure 2-8.
4. Using an IC puller, carefully remove the old EPROMs. Be
careful not to rock the EPROMs or bend the pins during
removal.
Remove all the EPROMs. Depending on your CPRU,
there may be either two or four EPROMs.
5. Remove the new EPROMs from the anti-static sleeve. Save
all the packaging.
Figure 2-8  CPRU EPROM REMOVAL
92001 - 38
Grounded wrist strap
X7 X5 X6 X4 
						

							INSTALLING PCBs
2. PCB Installation
and Startup
2-14 6. Following Figure 2-9, carefully install the new EPROMs.

The EPROMs install in non-consecutive order. Be
sure to install all four EPROMs.
Pay careful attention to line up the notch in each
EPROM with the notch in its socket.
Do not bend any pins when plugging in the
EPROMs.
7. Reinstall the CPRU PCB. If the system has been previously
installed, plug the system back in. Otherwise, continue with
the installation.
8. Store old EPROMs in the anti-static sleeve.
9. Insert the sleeve into the upgrade packaging and return to:
Nitsuko America
4 Forest Parkway
Shelton, CT 06484
Attn: Technical Service
Figure 2-9  CPRU EPROM INSTALLATION
92001 - 39
X7 X5 X6 X4
Grounded wrist strap
Key 
						

							2. PCB Installation
and Startup2-15
INSTALLING PCBs
Digital Station (DSTU) PCB (Figure 2-10)
The Digital Station (DSTU) PCB provides DDK connectors for
eight digital telephones, VAU, 3-ACI, 2-DCI, or 2-OPX modules.
To install a DSTU PCB:
1.28i:Plug a DSTU PCB into slot 2 in the KSU (1 DSTU
PCB maximum per system).
124i:Plug DSTU PCBs into slots 1-3 in any installed cabi-
net (nine maximum).
2. Refer to Part 3: Installing Extensions and Trunks for cabling
instructions.
On initial power-up(28i:hold down the Cold Start switch /
124i:CPRU Mode Switch set to Cold), the slot into which you
plug a station PCB determines its associated extension num-
bers. The system scans for station PCBs from the lowest slot in
the first cabinet (Main) to the high slot in the last cabinet
(Expansion # 2). The first station PCB the system finds gets
extension numbers 301-308. The next slot gets extension num-
bers 309-316, etc.
After initial power up (28i Hot Start without holding down any
switch / 124i:CPRU Mode Switch set to Hot), any new station
PCBs you plug in automatically add to the top of your exten-sion number list. For example, if your highest extension port is
324, any new station PCB you plug in will start with extension
number 325. This is true regardlessof the slot number used.
Figure 2-10  DIGITAL STATION (DSTU) PCB
92001 - 33
Digital Station (DSTU) PCB
Digital Station 1 Digital Station 2 Digital Station 3 Digital Station 4 Digital Station 5 Digital Station 6 Digital Station 7 Digital Station 8 
						

							INSTALLING PCBs
2. PCB Installation
and Startup
2-16
T1/PRI (PRIU) Interface PCB (Figure 2-11)
Note:For PRI, please consult with your Nitsuko
Representative for availability.
For T1 and ISDN Primary Rate Interface (PRI) applications,
install a T1/PRI Interface PCB. This PCB has a single 24-channel
circuit which can be configured for either T1 trunks or PRI. The
T1/PRI PCB requires an Advanced Features Module (EXCPRU)
and, for DTMF receivers, a Tone Detector (DTDU) PCB.
If set for T1, the T1/PRI PCB provides 24 trunks in a single
slot. These trunks can be one of the following:

Loop Start


Ground Start


DID


Tie Lines


ANI/DNIS Tie Lines
If set for PRI, each T1/PRI PCB provides 24 PRI (23 B&D)
channels and supports the following PRI services:


Basic PRI Call Control (BCC)


Display of incoming caller’s name and number


Routing based on the number the caller dials


ISDN maintenance functions (e.g., In Service/Out of Service
Messaging)


Speech and 3.1 KHz audio
The T1 feature requires that the BaseCPU version level must
be one of the following:
3.3B 3.3C 3.4B 3.4C 4.3B 4.3C 4.6C
7.0 7.1 7.2 7.3 8.0 or higher
The version number should not be confused with the software
revision. This version number will be stamped on the CPU cir-
cuit board. If the Base CPU version level is anything other than
the levels shown above, the T1 will not operate correctly.
The T1/PRI Interface PCB also requires the CSU or CSU/DSU
equipment and interconnecting cables listed below:


T-Serve II CSU
consisting of:
- T-Serve II CSU P/N 85950)
- T-Serve II Power Supply (P/N 85951)
- CSU/DSU RJ48-DB15 Cable (P/N 85953)
- T1/PRI Installation Cable (P/N 92067)
OR 
						

							2. PCB Installation
and Startup2-17
INSTALLING PCBs


Quad Datasmart DSU
consisting of:
- Quad Datasmart DSU (P/N 85956)
- CSU/DSU DB15M-DB15F Cable (P/N 85952)
- CSU/DSU RJ48-DB15 Cable (P/N 85953)
- T1/PRI Installation Cable (P/N 92067)
The T1/PRI Interface PCB is designed to use the last available
group of 24 consecutive trunks.
To install a T1/PRI Interface PCB:
1. Set the switches on the T1/PRI Interface PCB for either PRI
Mode or T1 Mode.
2. Plug the T1/PRI Interface PCB into slot 3 of any cabinet
(two maximum).
3. Connect the T1/PRI Installation Cable (P/N 92067) to the 4-
wire DDK connector on the T1/PRI Interface PCB.
4. If connecting a CSU:
-- Connect the opposite end of the T1/PRI cable to the DB-15
female connector (J4) on the CSU.
-- Connect the DB-15 female connector on the RJ48-DB15
Cable (P/N 85953) to the DB-15 male connector (P2) on
the CSU.
-- Connect the opposite end of the RJ48-DB15 cable to thetelco connection.
OR
4. If connecting a DSU:
-- Connect the opposite end of the T1/PRI cable to the DB-15 
female connector (TERMINAL) on the DSU.
-- Connect the DB-15 female connector on the RJ48-DB15
Cable (P/N 85953) to the DB-15 male connector 
(NETWORK) on the DSU.
-- Connect the opposite end of the RJ48-DB15 cable to the
telco connection.