AT&T System 25 - Manual (Page 95)

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 installing the octopus cable for the CPU/Memory CP, label
the 25-pair connector and flag-type tie wrap with a CAB 1 SLOT1
label from the cable label sheets (Figure 2-7). Position the label on
the back of the hood of the 25-pair connector.
Label the octopus cable legs, close to the modular plugs, as follows:
L e g Label
1 SYSTEM ADMIN. TERM
2 SMDR
3 DIGITAL TAPE UNIT
7 ETU 1 SWITCH (CPU)
8 ETU 2 SWITCH (CPU)
Connect the cable to Cabinet 1, slot 1, and run the cable horizontally
through the D-rings to the 50A Fanning Strip.
Mount the cable in the fanning strip (Figure 2-31).
Insert the octopus modular plugs into the Z210A2 Adapter jacks on
the SIP per the Voice and Data Station Records Form (Figure 2-26).
If an ETU is provided, connect modular plug 7 to
on the ETU.
If a second ETU is provided, connect modular
(cpu) jack on second ETU.
SWITCH (cpu) jack
plug 8 to SWITCH
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