3Com 3C13886 Installation Guide - Page 37
Interface Cable, Connecting Interface Cable,
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3Com Router Module Guide Chapter 2 Smart Interface Cards LP/AL ON means the interface is in a loopback. Blinking means an AIS, LFA, or RAI alarm signal is present. OFF means no loopback or alarm is present. Note: AIS = Alarm indication signal; LFA = loss of frame alignment; RAI = Remote alarm indication 2.5.5 Interface Cable ROUTER 1-PORT FRACTIONAL T1 SIC interface cable is 100-ohm standard shielded network cable that has RJ-45 connectors at both ends. The following figure illustrates a ROUTER 1-PORT FRACTIONAL T1 SIC interface cable: Figure 2-22 T1 cable Caution: Relevant cables are included in the standard shipment package of ROUTER 1-PORT FRACTIONAL T1 SIC. 2.5.6 Connecting Interface Cable Caution: z You should connect a cable to the port with the correct mark. Misplugging is prone to impair the SIC/MIM and even damage the router. z When using T1 cable outdoors, you are recommended to install a special lightning arrester on the input end of the cable so as to avoid lightning more effectively. 2-22