ATT System 25 Installation And Maintenance Manual

							INSTALLATION
On-Premises Digital Switched Connection
To access a CPU/Memory port through a switched connection, the port is
connected to a port on a TN726 CP and assigned a Data Dial Code (DDC).
See Figure 2-47.
The peripheral equipment can be either stand-alone or associated with a
voice terminal. The peripheral equipment is connected to another port on a
TN726 CP. To access the CPU/Memory port, the peripheral equipment must
dial the DDC of the CPU/Memory port.
Note:Figure 2-47 shows a 858A SIP Adapter to provide the
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
building wiring termination.A Z210A2 Adapter can also be
used.
Connect RS-232C plug on the peripheral equipment to the RS-232C
connector on a Z3A1 or Z3A4 ADU. Always tighten the screws or
other fasteners on this connection. If these connections are not
properly fastened, the Data Line CP port may be falsely busied out.
lf the peripheral equipment requires supplementary power, continue
with Step 3; otherwise, go to Step 8.
Connect the ADU to the building wiring with a D8W-87 modular cord
plugged into a 400B2 Adapter.
Plug the 400B2 Adapter into the wall jack.
Plug one end of a D6AP Cord into the 400B2 Adapter and the other
end into a 248B Adapter.
Connect the 248B Adapter to a 2012D supplementary power supply.
Plug the 2012D Power Supply into an ac outlet.
At the SIP, connect the building wiring termination to an 858A
Adapter.
Using an octopus cable, connect the modular side of the adapter to
a port on a TN726 CP.
Locate the Z210A2 Adapter connected to the desired CPU/Memory
port. Connect a D8W-87 modular telephone cord to the jack on that
Z210A2 Adapter.
2-106 
						

							INSTALLATION
11.
Connect the other end of the modular cord to a 355AF Adapter.
12. Connect an M7U-87 Cord to the 355AF Adapter.
13. Connect the other end of the M7U-87 Cord to the RS-232C jack on a
Z3A4 ADU.
14. Connect the ADU to a 400B2 Adapter with a D8W-87 cord.
15. Connect the 400B2 Adapter to a 2012D Supplementary Power Unit
as shown in Figure 2-47.
16.
Plug the 400B2 Adapter into a 2210A2 Adapter on the SIP.
17. Using an octopus cable, connect the other side of the Z210A2
Adapter to the supporting TN726 CP.
2-107 
						

							INSTALLATION
LEGEND:
B1- TYPICAL -103A CONNECTING BLOCK
cl- MODULAR CORD (D8U-87)
C2 - OCTOPUS CABLE (UP80780)
C3 - EIA CROSSOVER CABLE (M7U-87)
C7 - MODULAR POUER CORD (D8AP-87)
W1- INSIDE 8UILDING WIRING CABLE
2488 ADAPTER - ALLOW MODULAR JACK CONNECTION FROM 20120 TRANSFORMER
355AF - ADAPTER (RS-232 RECEPTACLE TO MODULAR JACK)
40082 ADAPTER - POWER ADAPTER
2012D TRANSFORMER -15-18V AC TRANSFER
Z3A1 ADU- EQUIPPED WITH A 3-FOOT PLUG-ENDED EIA CORD
Z3A4 ADU - EQUIPPED WITH A 3-FOOT RECEPTACLE-ENDED EIA CORD
* PERIPHERAL EQUIPMENT
l SYSTEM ADMINISTRATION TERMINAL (LEG 1 OF OCTOPUS CABLE)
l SMDR OUTPUT DEVICE (LEG 2 OF OCTOPUS CABLE)
NOTE: PERIPHERAL EQUIPMENT OR MULTILINE
VOICE TERMINAL WITH DATA BUTTON DIALS PORT X DDC TO
ESTABLISH DATA CONNECTION TO ZTN129. DEPENDING ON
EQUIPMENT, ADU MAY REQUIRE AUXILIARY POWER.
Figure 2-47.On-PremisesPeripheralEquipmentWithSwitched
Connection to CPU/Memory
2-108 
						

							INSTALLATION
Off-Premises Nonswitched Connection
Off-premises peripheral equipment must be equipped with an originating
modem (see Figure 2-48). The connection is made from the CO through the
TAE to a dedicated modem (optioned for autoanswer) connected to the
appropriate Call Processor port.
1.
2.
3.
4.
Following the instructions for connecting off-premises stations,
connect the OPS line from the RJ21X network interface through the
TAE connecting block to the SIP.
Using a modular telephone mounting cord, connect a
other side of the appropriate adapter.
Using an M7U-87 Cord, connect the RS-232C port on
the RS-232C receptacle on a 355AF Adapter.modem to the
the modem to
Locate the Z210A2 Adapter jack connected to the desired Call
Processor port. Using a D8W-87 modular cord, connect the jack to
the 355AF Adapter.
Off-Premises Switched Connection
To provide off-premises switched access, the peripheral equipment accesses
the system either as an off-premises (analog) station or simply as a dial-up
connection through the CO. In either case, the peripheral equipment must be
equipped with an originating modem.
The CPU/Memory port may be connected to a modem, as shown in Figure
2-48, and the telephone (2-wire) side of the modem connected like a station
to a ZTN78 Tip Ring Line CP port.In this case, the peripheral equipment
user sets up a call (station-to-station in the OPS case, trunk-to-station in a
dial-up configuration) to the Call Processor port.
The CPU/Memory port may alternatively be connected and switched via a
TN726 Data Line CP port, as shown in Figure 2-47. In this case, the system
must be equipped with a TN758 Pooled Modem CP to support the analog to
digital connection.
2-109 
						

							INSTALLATION
SYSTEM 25
CABINETPART OF
OCTOPUS
CABLECO OR PROVATE LINE CIRCUIT
PART OF
SIPCONNECT
VIA TAE
ZTN128
OR
ZTN130Z210A2
ADAPT.TYPICAL
MODEMTELCO
CENTRAL
OFFICE
355AF
*PERPPHERAL
EQUIPMENTTYPICAL
MODEM
LEGEND:
ZTN129/130- CPU/MEMORY CP
C1 - MODULAR CORD (D8W-87)
C2 - OCTOPUS CABLE (WP90780)
C3 - EIA CROSSOVER CORD (M7U-87)
355AF ADAPTER (RS-232 RECEPTACLE TO MODULAR JACK)
* PERIPHERAL EQIUPMENT
l SYSTER ACCESS TERMINAL (LEG 1 OF OCTOPUS CABLE)
l SMDR OUTPUT DEVICE (LEG 3 OF OCTOPUS CABLE)
Figure 2-48.
Off-Premises Peripheral Equipment With Direct Connection
to CPU/Memory
2-110 
						

							INSTALLATION
INSTALL CUSTOMER’S DTU
The DTU must be directly connected to Port #3 on the CPU/Memory CP
(Figures 2-45 and 2-46).Remote and switched connections are not
supported. Follow the procedures provided for installing the SAT.
INSTALL STATION MESSAGE DIGITAL
RECORDING (SMDR) EQUIPMENT
The SMDR equipment connects to Port #2 on the CPU/Memory CP. The
connections are the same as those for the SAT (Figures 2-45 through 2-48).
Follow the procedures provided for installing the SAT.
2-111 
						

							INSTALLATION
INSTALL STARLAN NETWORK INTERFACE
Note:Support for the STARLAN Interface has been discontinued.
The ZTN84 STARLAN Interface CP provides an interface between the
System 25 TDM bus and a STARLAN NETWORK local area network (LAN).
An octopus cable connects the ZTN84 CP to a Network
on the STARLAN NETWORK (Figure 2-49).
1.
2.
3.
4.
Select the cable label sheet (Figure 2-7) that
(blue for #l, orange for #2, and green for #3).Extension Unit (NEU)
identifies the cabinet
On an octopus cable, attach an appropriate label (CAB1 SLOT8, for
example) on the last flag-type cable tie and on the back of the hood
of the 25-pair connector.
Connect the 25-pair
ZTN84 receptacle on
Connect the modular
IN jack.connector end of the octopus cable to the
plug on leg 1 of the octopus cable to an NEU
LEGEND:
ZTN84 - STARLAN INTERFACE CP
C1- OCTOPUS CABLE ( WP90780 )
NEU - NETWORK EXPANSION UNIT
Figure 2-49.ZTN84 STARLAN Interface CP Connection
2-112 
						

							INSTALLATION
Shared System 25 Voice/STARLAN NETWORK Data
Connections
STARLAN NETWORK workstations can share the 4-pair System 25 wiring to
the SIP with an analog or 7300H Series voice terminal. The STARLAN
NETWORK data is transmitted over pairs two and three. At the SIP, the data
pairs and voice pair(s) areseparated by the standard Y-adapter
(WP90851 ,L1 ). The data pairs are connected to the STAR LAN NETWORK
NEU. For analog single-line voice terminals, the voice pair is connected by
an octopus cable to a ZTN78 CP. For 7300H Series voice terminals, the
voice pairs are connected to a ZTN79 CP. A KS-23475, L1 Adapter and a
KS-2291 1 Power Unit are also required at the workstation to provide power
to the 7300H Series voice terminal.
Single-Line Voice Terminals
See Figure 2-50.
1.Unpack each terminal and examine it for damage.
2. At the workstation, connect one end of the terminal line cord to the
terminal and the other end to the PHONE jack on the NAU.
3. Using a D8W-87 modular cord, connect the OUT jack on the NAU to
the modular wall jack.
4.Locate the workstation appearance at the SIP, and disconnect the
octopus cable.Install a WP90581, L1 Y
octopus cable plug to the VOICE jack.
5. Using a D8W-87 modular cord, connect
Adapter to the STARLAN NETWORK NEU
Adapter, and connect the
the DATA jack on the Y
IN jack.
2-113 
						

							INSTALLATION
STARLAN
NETWORK
NEU
PART OF SIP
SYSTEM 25
CABINETY ADAPT
(WP90851-
L1)SIP
ADAPT
(TYP) ZTN78
OR
TN742
PART OF
OCTOPUS
CABLEPERSONAL
COMPUTER
STARLAN NETWORK
WORKSTATION
LEGEND :
ZTN78 -
TN742 -
699Y -
B1 -
C1 -
C2 -
C5 -
W1 -MP90851-L1 -
NOTES :1.
2.
IF RANGE IS
TIP RING LINE CP
ANALOG LINE CP
ATL ADAPTER
TYPICAL
- 103A CONNECTING BLOCK
MODULAR CORD (D8W-87)
OCTOPUS CABLE (WP90780)
MODULAR CORD (D4BU-87) - FURNISHED WITH SET
INSIDE WIRING CABLE
MODULAR Y ADAPTER
GREATER THAN 2000 FEET FROM SYSTEM CABINET,
TERMINAL DATA RATE (SPEED) MAY BE LIMITED
IF RANGE IS LESS THAN 2000 FEET FROM SYSTEM CABINET,
USE ZTN78. IF RANGE IS MORE THAN 2000 FEET BUT LESS
THAN 1300 OHM (INCLUDES TELEPHONE/TERMINAL) (LOOP RESISTANCE)
FROM CABINET, USE TN742
Figure 2-50. Single-Line
AnalogTerminal/STARLAN
NETWORK
Workstation Connections
2-114 
						

							INSTALLATION
73001H 
Series Voice Terminals
See Figure 2-51.
1.
2.
3.
4.
5.
6.
7.
Unpack each terminal and examine it for damage.
At the workstation, use a D8W-87 modular cord to connect the NAU
jack on the KS-23475, L1 Adapter to the OUT jack on the NAU.
Using a D8W-87 modular cord, connect the PHONE jack on the KS- ,
23475, L1 Adapter to the voice terminal.
Connect the POWER plug on the KS-23475, L1 Adapter to the KS-
22911 Power Unit.
Connect the plug on the KS-23475, L1 Adapter’s modular cord to the
modular wall jack.
Locate the workstation appearance at the SIP and disconnect the
octopus cable.Install a WP90581, L1 Y Adapter and connect the
octopus cable plug to the VOICE jack.
Using a D8W-87 modular cord, connect the DATA jack on the Y
adapter to the STARLAN NETWORK NEU IN jack.
2-115