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...

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...

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...

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,...

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...

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...

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...

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...

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...