3Com MSR 50, MSR 30, MSR 20 FIC-1CPOS, Following table describes the LEDs on the FIC-1SHL-4W panel

218CHAPTER 4: FLEXIBLE INTERFACE CARDS

The following table describes the LEDs on the FIC-1SHL-4W panel.

Table 162 LEDs on the FIC-1SHL-4W panel

LED	Description
LINK	OFF means no link is present.
	ON means a link is present.
ACT	OFF means no data is being transmitted or
	received.
	Blinking means data is being received or
	transmitted.

Interface Cable The FIC-1SHL-4W uses a tailor-made 4-wire telephone cable of type “Y” or “I”. You can select the type as needed.

■As shown in the following figure, on one end of the type “Y” G.SHDSL cable there is one RJ-11 connector (X1), which is used to connect the FIC-1SHL-4W card. On the other end there are two RJ-11 connectors (X2 and X3), which can connect two 2-wire telephone cables. On X1, pins 3 and 4 are connected with pins 3 and 4 on X2, and pins 2 and 5 are connected with pins 3 and 4 on X3.

Figure 267 Type “Y” cable

■As shown in the following figure, on the two ends of the “I” type G.SHDSL cable there are RJ-11 connectors, which can connect one 4-wire telephone cables.

Figure 268 “I” type cable

Connecting the Interface	■	When using “Y” cable, connect the X1 end of the cable to the interface on
Cable		FIC-1SHL-4W and connect the other two ends to DSLAM through PSTN.
	■	When using “I” cable, connect one end of the cable to the interface on
		FIC-1SHL-4W and the other end to DSLAM through PSTN.

FIC-1CPOS

Introduction The 1-port channelized SDH/SONET interface card (FIC-1CPOS) provides one STM-1/OC3-compliant multi-channel interface and supports communication speeds up to 155.52 Mbps.