ATT System 25 Installation And Maintenance Manual

NSTALLATION
Prepare Carrier Loading Labels
As you connect the port CPs in each cabinet to the SIP, list the connections
on the Carrier Loading label. This label is mounted on the inside of the front
cover of the cabinet. (See Figure 2-29.) Keep track of –48 volt power usage
so that the power supply is not overloaded.
1.
2.
3.
4.
Enter, the CP type under the appropriate slot number.
For each port, enter the terminal type and the unit load, referring to
the Unit Load by Station Set Type label attached near...

INSTALLATION
2-68 

INSTALLATION
Modify Octopus Cables if Required
If flag--type cable ties are shipped loose, they must be installed on the early
production octopus cables. The flag-type cable tie location depends on the
type of SIP arrangement (Figures 2-16 and 2-17). Also, if the alternate SIP
arrangement is used, later production octopus cables must be modified.
1.Check the octopus cables, if they have flag-type cable ties, go to
Step 3. Otherwise, go to step 2.
2. Install flag-type cable tie so that the eight free ends...

INSTALLATION
TO SWITCH 
TO SWITCH 
DISTRIBUTION RINGFLATTEN OCTOPUS CABLE
BEFORE FEEDING
INTO THE
50A FANNING STRIP
ION THE FLAG
MOD PLUG ENDS TO
FAN OUT TO
(D-RINGS) AS REQ’DADAPTERS ON SIPTIE WRAP IN FRONT
OF THE WIRE FORM
SIP
 FLAG TIE WRAP
WITH OCTOPUS CABLE
IDENTIFICATION LABEL
Figure 2-30.Standard and Modified Octopus Cables
2-70 

INSTALLATION
Make SIP Connection for CPU/Memory
In all cases, the CPU/Memory is connected to the SIP via an octopus cable.
Since there are four ports on the CPU/Memory (port 1 for the SAT, port 2 for
SMDR, port 3 for the DTU, and port 4 [reserved]), plugs 1 through 3 on the
octopus cable are used to connect the peripheral equipment. (Plugs 7 and 8
connect to the ETU; plugs 4, 5, and 6 are not used.) Plugs 1, 2, 3, 7, and 8
plug into a designated adapter on the SIP.
1.
2.
.
3.
4.
5.
6.
7.
Before...

INSTALLATION
FLAG-TYPE
CABLE TIESSTANDARD CABLE
I
MODIFIED CABLE FOR
(FLAG TIE
ALTERNATE SIP ARRANGEMENT
AT 65” REMOVED)
Figure 2-31.Mounting Octopus Cable on Fanning Strip
2-72 

INSTALLATION
Make SIP Connections to Cabinet for 7300H Series Terminals
1.
2.
3.
4.
5.
6.
7.
8.
9.
Select the cable label sheet (Figure 2-7) that identifies the cabinet
(blue for #1, orange for #2, and green for #3).
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 connector end of the octopus cable to an
appropriate receptacle (ZTN79) on the switch cabinet.
Run the octopus...

INSTALLATION
Make 
SIP Connections to Cabinet for MET Sets
Follow the same procedure as for 7300H Series terminals to connect MET set
SIP appearances to the appropriate CPs as outlined below:
l
l
l
l
l
Note:
Connect the 25-pair connector to a TN735 CP
Attach a cable label to the octopus cable 25-pair connector and flag-
type tie wrap
Run the cable 10 the 50A Fanning Strip
Plug cable ends into the appropriate SIP adapters
Complete the Voice and Data Station Records Form.
Each TN735 CP supports only four...

INSTALLATION
lAttach cable labels to the two octopus cable 25-pair connectors and
flag-type tie wrap.
lAttach octopus cables to the 853B adapter
lRun the cables to the 50A Fanning Strip.
lPlug the cable ends into the appropriate adapters, and complete the
Voice and Data Station Records Form.
November 1995
2-74a 

INSTALLATION
Make SIP Connections for Data Terminals and Computers
Any RS-232C compatible data terminal, personal computer host computer, or
a STAR LAN NETWORK workstation can be connected in one of four ways:
lIf the terminal has a modem, it should be connected to a ZTN78 CP
in the same way as a single-line voice terminal.
l The terminal’s RS-232C port may be connected to an Asynchronous
Data Unit (ADU) and then to the SIP over standard building wiring.
Use an octopus cable to connect the SIP appearance...