216.0 OPERATIONWhen the Model 2701/I has been properly configured and installed, itshould operate transparently. This sections describes power-up, LEDstatus monitors, and the built-in loopback test modes.6.1 POWER-UPBefore applying power to the Model 2701/I, please read section 5.4,“Power Connection” on page 20 and ensure that the unit is properly con-nected to the appropriate power source..6.2 LED STATUS MONITORSThe Model 2701/I features six front panel LEDs that monitor connectionson the G.703/G.704 and 10BaseT links, signaling, error and test modes.Figure 10 (below) shows the front panel location of each LED. Descrip-tions of each LED follow Figure 12.Figure 12. 2701/I Front PanelsE1 Link(Active Green) Solid green (On) indicates that the end to end E1Link is up, signifying that the link is active. The E1 Link LED isOff when the link is down.