Chapter 2. Installation and Operation61200659L1-1 MX2800 User Manual 2-7REAR PANELThe MX2800 STS-1 rear panel is equipped with a LAN port, amodem port, two alarm output terminal blocks, two sets of NETin/out jacks, two Amphenol (Amp) connectors, and DC/AC powerconnections. Figure 2-3 illustrates the rear panel and identifies itsequipment. Descriptions for these items follow the figure. Pinassignments are given in Appendix A, Pinouts.Figure 2-3. MX2800 STS-1 Rear ViewLAN 1234MODEM CRITICALNO COM NCNONCRITICALINOUTABDSX-1/E1(OUT)DSX-1/E1(IN) USE COPPERCONDUCTORS ONLY!PWRFAIL RET RETPWRFAIL ABDC POWER115VAC 50/60HZ0.8a567 8NET# Item Function1 LAN 10BaseT LAN connectionNote: The LED to the right of this connector illuminateswhen the unit is connected to an active ethernet seg-ment.2 Modem Telephone line connection for internal V.34 modem (seenote on page 2-8)3 Noncritical/Critical Connections for external audible/visible alarms4 NET Network service connections for controller cards A and B5 DSX-1/E1 64-pin Amp connectors for T1/E1s6 Power DC power connection7 Ground stud8 115 VAC 50/60Hz AC power connection
