3Com MSR 50 Default, they are not supplied, Description of the LEDs on SIC-1TPRI/SIC-1T1-F panel

	SIC-1TPRI/SIC-1T1-F 35
Table 9 Description of the LEDs on SIC-1TPRI/SIC-1T1-F panel
LED	Description
LINK/ACT	ON means the carrier signal has been
	received.
	OFF means no carrier signal has been
	received.
	Blinking means data is being transmitted
	or/and received.
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

Interface Cable SIC-1TPRI/SIC-1T1-F interface cable is 100-ohm standard shielded network cable that has RJ-45 connectors at both ends. The following figure illustrates a SIC-1TPRI/SIC-1T1-F interface cable:

Figure 27 T1 cable

	For the pinouts of T1 cable, see Low-End and Mid-Range Series Routers Cable
	Manual.
c	CAUTION: Relevant cables are included in the standard shipment package of
	SIC-1TPRI/SIC-1T1-F. Please order them together with SIC-1TPRI/SIC-1T1-F. By
	default, they are not supplied.

Connecting the Interface Cable

c

CAUTION:

■You should connect a cable to the port with the correct mark. Improper plugging is prone to impair the SIC/MIM and even damage the router.

■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.

If the SIC has been properly installed, follow these steps to connect the cable:

Step 1: Connect one end of the T1 cable to the RJ-45 port of SIC-1TPRI/SIC-1T1-F;