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

5. System Startup
and Data5-13
DCI-A AND DCI-B MODULES
Installing a DCI (Figures 5-7 through 5-11)
1. Turn the telephone upside down and remove the speed dial
card.
2. Remove the four screws that secure the telephone base and
remove the base.
Figure 5-7  REMOVING THE TELEPHONE BASE3. Peel the adhesive backing off of the DCI spacer and attach it
as shown to the DCI Module. This spacer keeps small objects
from falling into the telephone.
Figure 5-8  INSTALLING THE SPACER
Continued on next page . . .
92 -...

5. System Startup
and Data
5-14
DCI-A AND DCI-B MODULES
Installing a DCI (cont’d)
4. Using a flat-blade screwdriver, carefully pry out the filler
piece on the telephone base. This will expose the cutout in
the base.
5. Plug the DCI into the connector in the telephone’s upper
housing and secure in place with the two screws provided
(Figure 5-10).
6. Reinstall the telephone base and secure it with the four
screws. Make sure the DCI is correctly oriented in the cutout
in the telephone base.
7. Connect the...

5. System Startup
and Data5-15
DCI-A AND DCI-B MODULES
Figure 5-10  INSTALLING THE DCIFigure 5-11  TYPICAL DCI DATA INTERFACE/SMDR
RECORDING INSTALLATION
92 -168DA66M1-50
Station BlockPC
625
Modular
Jack
Station
Cable
25-Pair
Cable
48 FU
Filter4-Conductor
Line Cord RS-232-C
Cable
92 - 124A
25-Pin RS-232-C
Connector
13 12 11 10 9 8 7 6 5 4 3 2 1 
25 24 23 22 21 20 19 18 17 16 15 14
DCE
(3-DCI, DCI-A
or Modem) Direction of Signal Flow
(        output or         input)
DTE
(PC or 
Printer) Description...

5. System Startup
and Data
5-16
3-DCI MODULE
3DCI Description
The 3-DCI is a stand-alone three port data module (DCE ports)
which provides three RS-232-C serial ports to network three
different data devices. Each data device connected to the 3-DCI
uses one system data port (max. 144).
The 3-DCI also provides remote maintenance capability and alarm
reports for the system if connected to a modem.  When connected
to a terminal, port identification, PCB status, and system configu-
ration data is provided....

5. System Startup
and Data5-17
3-DCI MODULE
Connecting a 3-DCI-A to a Digital Extension
Circuit(Figures 5-13)
1. Install a modular jack for the 3-DCI-A.  The modular jack
should be within six feet of the 3-DCI-A.
2. For each 3-DCI-A, run one-pair 24 AWG station cable from
the cross-connect block to a modular jack.  Ground the
unused pair.
3. Terminate the extension leads to GRN/RED of the modular
jack. Terminate the unused leads to the jack.4. Install a data device into any one of the 3-DCI-A serial...

5. System Startup
and Data
5-18
3-DCI MODULE
Figure 5-13  TYPICAL 3-DCI-A DATA NETWORK
PCSerial PrinterModem
66M1-50
Station Block625
Modular
Jack
Station
Cable
25-Pair
CableRS-232-C
Cable
(50’ max)RS-232-C
Cable (50’ max)
DCE to DCE
Adaptor
(P/N 88079)
48 FU
16DSTU Filter
Cable4-Conductor
Line Cord3DCI
92000 - 168C
25-Pin RS-232-C
Connector
13 12 11 10 9 8 7 6 5 4 3 2 1 
25 24 23 22 21 20 19 18 17 16 15 14
DCE
(3-DCI, DCI-A
or Modem) Direction of Signal Flow
(        output or         input)
DTE
(PC or...

6. Specifications
and Parts6-1
Section 6, SPECIFICATIONS AND PARTS LIST
In this section . . .
Page
System Specifications  . . . . . . . . . . . . . . . . .6-2
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Environmental Requirements . . . . . . . . . . . . . 6-2
Power Requirements . . . . . . . . . . . . . . . . . . . . 6-2
Site Requirements. . . . . . . . . . . . . . . . . . . . . . 6-2
Environmental Specifications . . . . . . . . . . . . . 6-3
Electrical Specifications . . . . . ....

6. Specifications
and Parts
6-2
SpecificationsTalk Timeslots (Intercom/line) non-blockingAnalog trunks (CO/PBX lines) 128*Digital key telephones 256* combined
Analog single line telephones 240* total to
DSS Console 8* 256DCI-A/B 144* one reqd
3DCI-A adaptors 48* per system3ACI-A adaptors 64* 256Alarm Circuits 16*
Door Chime Box/Door Unlock Contacts 8 combined total
Internal Page Zones 128 32 per tenant
External Page Zones 8Dial Tone Detector Circuits 128* combined total
DTMF Receiver Circuits 128* to...

6-3
6. Specifications
and Parts
SYSTEM SPECIFICATIONS
Environmental Specifications
Temperature Temperature
Cabinet and Keysets 0oto 40
oC Door Chime Box -20
oto 60
oC
(-4
oto 140
oF) (32
oto 104
oF)
Humidity Humidity
20 to 80% non- 20 to 80% non-
condensing condensing
Electrical Specifications External Zone Paging
Power Supply: 110 VAC +/-10% Output Impedance: 600 OHMs
@ 57/63H +/- 1Hz
dedicated 15 Amp circuit
Power
Requirements: 75 VA to 6A Main Cab Maximum Output: + 3 dBM
GroundingRequirements: No. 14...

6. Specifications
and Parts
6-4
SYSTEM SPECIFICATIONS
Maximum Cable RunsDevice Cable type Cable run length (ft) NotesKey Telephone 2-wire 26 AWG 1300
2-wire 24 AWG 2000
2-wire 22 AWG 2600Single line 2-wire 26 AWG 13,100 at constant 20 Ma
telephone 2-wire 24 AWG 21,000 at constant 20 Ma
2-wire 22 AWG 34,750 at constant 20 MaSingle line 2-wire 26 AWG 6,500 at constant 35 Ma
telephone 2-wire 24 AWG 10,500 at constant 35 Ma
2-wire 22 AWG 17,400 at constant 35 Ma3DCI-A adaptor 2-wire 26 AWG 1300
2-wire 24 AWG...