NPE

ON-BOARD

MICRO-

PROCESSOR

PORT CIRCUIT

0

ANALOG

PORT

DIGITAL

PORT

ELECTRONIC POWER FEED

PORT CIRCUIT

3

\

T.O

R.O

BT.O

BR.O

LT.O

LR.O

TO MET

TERMINALS

T.3

R.3

BT.3

BR.3

LT.3

LR.3

/

Figure 3-13. Unique MET Line (TN735) Circuitry

3-27

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Image 311
AT&T AT&T manual Unique MET Line TN735 Circuitry