AT&T System 85 manual Connecting the Power Supply, Phone Other Line

ADJUNCT POWER

Connecting the Power Supply

The power output is provided through 3 modular jacks on the power supply. These jacks are labeled, from left to right,

PHONE	OTHER LINE
-7 +8	-2 +5

The - and + numbers under ‘‘PHONE’’ and ‘‘OTHER’’ refer to the pins on which power is present and the polarity of that power.

The PHONE and LINE jacks are 8-pin female non-keyed 657-type jacks that can accept D4, D6, and D8 modular plug cables. The OTHER jack is a 6-pin female non-keyed 657-type jack.

The following local powering arrangements, shown in Figures 1 and 2, can be used with the MSP-1 power supply.

Figure 1 shows the local powering arrangement for: ISDN voice terminals; the DCP 7444 and 8434 voice terminals’ VF displays; and adjuncts connected to all telephones except the 8102.

Figure 2 shows the local powering arrangement for adjuncts connected to the 8102 tele- phone.

Note: The type of cord(s) needed to make these connections are designated in each draw- ing.

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