ATT System 25 Installation And Maintenance Manual

INSTALLATION
MICROWAVE
INTERFACEMICROWAVE
INTERFACE
LIGHT-GUIDE
INTERFACELIGHT-GUIDE
INTERFACE
INFRARED
INTERFACEINFRARED
INTERFACE
655 FEET
MAXIMUM
ANY DS1
INTERFACE655 FEET
MAXIMUM ANY DS1
INTERFACE
Install
*DSX-1 REFERS
Figure 2-24.DS1
Customer Service
TO A PHYSICAL CROSS-CONNECT FOR DS1 SIGNALS
Connections—Non Metallic Connections
Unit (CSU)
The CSU may either be rack mounted or mounted as a standalone unit. It
can be equipped with several different plug in units, the Signal Monitor Unit,
T1 Office...

INSTALLATION
Connect the CSU
The CSU can be powered by the line or from a locally provided -48 V dc
power supply. Figure 2-25 shows the connections for connecting the CSU.
The 48 V and GRD leads are optional according to how the CSU is powered.
H600 307 ,02
CONNECTOR
CABLE (NOTE)
NOTE : FOR DISTANCES OVER 50 FEET ( 15.2 M)
USE C6E CONNECTOR CABLE(S) BETWEEN
H600 307,02 CONNECTOR CABLE AND DS1
TRUNK CIRCUIT PACK .TO LOCALLY
PROVIDED -48V
POWER SUPPLY
Figure 2-25.CSU Connections
Line...

INSTALLATION
Consideration should be given to installing secondary protection on each
out-of-building facility connected to the TAE if any of the following conditions
exist:
l The service entrance (protector block) ground is not properly
installed (bonded to building ground, for example).
l The local telephone company does not permit access to the
protector block.
lHigh-voltage surge protection is not provided.
Install the CBC as follows:
1.Connect one end of the CBC to the ground point at the network...

INSTALLATION
INSTALL EQUIPMENT ROOM STATION CABLING
System 25 is connected to the building (station) wiring in two stages. First,
the building wiring is connected to the Station Interconnect Panel (SIP).
Then, the octopus cables from the back of the cabinets are connected to the
SIP.
Accurate documentation during installation is essential to the performance
and maintenance of System 25 and will make initialization and administration
much easier to perform.The Voice and Data Station Records Form (Figure...

INSTALLATION
.
2-61 

INSTALLATION
Connect Building Wiring to SIP
The type of building wiring termination determines what types of adapters are
used. Two types are supported: 4-pair cable (cut down) and modular jack.
Any combination of adapters may be mounted on a 617A Panel. Cluster the
connection on the SIP by voice terminal type: single-line, 7300H Series*,
Multibutton Electronic Telephone (MET), and voice/data.
Modular Plug Termination
Each 4-pair modular plug supports one station (Figure 2-27). It connects to a
modular...

INSTALLATION
Z21OA1
ADAPTER
(MODULAR TO
MODULAR)PURSELOCK CLIP
/
( TYPICAL)
Figure 2-27.Modular Plug Terminations Connected to the SIP
2-63 

INSTALLATION
4-Pair Cable Terminations
Each 4-pair cable supports one station (Figure 2-28). It connects to a wiring
block on a 858A Adapter.
1.
2.
3.
4.
5.
6.
Run the 4-pair cable through the rings at the top of the 617A Panels.
Cut down the leads starting with Pin 1 of the wiring block located
beside the modular jack (Figure 2-28).
Wiring BlockDIW Cable
Pin No.Color Code
1W-BL
2BL-W
3W-O
4O-W
5W-G
6G-W
7W-BR
8BR-W
Using a felt-tipped pen, record the building wiring destination on the
wiring block...

INSTALLATION
ZZ1OA1
ADAPTER
(MODULAR TO
MODULAR)
PURSE
LOCK CLIP
(TYPICAL)
Figure 2-28.Cut Down Terminations Connected to the SIP
2-65 

INSTALLATION
Connect Cabinets to SIP
Table 2-E shows the type of terminals that can be connected to each CP type
and the maximum allowable cabling distances to the system cabinets. Refer to
the Voice and Data Station Records Form for the terminal types assigned to each
workstation.
Caution:Connecting a terminal to the wrong type of CP can
damage the pack.
Table 2-E.Circuit Pack Versus Terminal Type
Circuit PackTerminal TypeDistance (in feet) From Cabinets
Using 24 AWG Wire
ZTN797300H Series and ATL2,000...