Instruction manual

Connecting the Control Unit to the Network Interface

Step 4: Plugging the CSU into an AC Outlet

When Steps 1, 2, and 3 are finished, plug the CSU power cord into a 117-VAC

outlet.

ESF T1 CSU Front Panel

The ESF T1 CSU front panel consists of LEDs, controls, and test jacks (see

Figure 4-7).

DTE LOOPBACK

SEND CODE

ESF T1 CSU

AT&T

AOO

UP/DN

Eq Eq SM SM

IN OUT MON MON IN OUT

-1 +1

FRAME

LOSS

LOW DENS

LOOPED

ALARM

LOCAL

POWER

DIAGNOSTIC

INTERFACE

NEAR END LOOPED

BPV

CRC ERROR

FRAME LOSS

PULSES

CRITICAL POWER

FAR END LOOPED

Figure 4-7. ESF T1 CSU Front Panel

Tables 4-18, 4-19, and 4-20 show the functions of these items.

4-30 Installing the Channel Service Unit