3Com MSR 50 FIC-8T1/FIC-8T1-F, Introduction FIC-8T1, LEDs on the FIC-8T1 and FIC-8T1-F panels

176CHAPTER 4: FLEXIBLE INTERFACE CARDS

Figure 218 Extending a T1 cable

T1 cable (100-ohm straight-through

shielding network cable) Network interface connector RJ-45

Router DDN, etc

RJ-45	-
	Straight-through cable

Step 3: Power on the router, and check the behavior of the LINK LED on the card

panel: OFF means fault occurs on the line. Check the line status.

FIC-8T1/FIC-8T1-F

Introduction FIC-8T1

FIC-8T1, the 8-port channelized T1/PRI interface card, transmits, receives, and processes eight channels of T1 data traffic. In addition, you can use the card for other purposes, such as CT1 access and the ISDN PRI function.

FIC-8T1-F

FIC-8T1-F, the 8-port fractional T1 interface card, is different from the FIC-8T1 card in the sense that:

■The FT1 operating mode supported by the FIC-8T1-F card allows only one n ⋅

64kbps or n ⋅ 56 kbps bundle to be formed on each interface, where n = 1 to

24.However, the FIC-8T1 card allows arbitrary grouping of 24 channels and therefore multiple bundles.

■The FIC-8T1-F card does not support PRI mode.

n Given a FIC-8T1 card, the system automatically creates a serial interface for each timeslot bundle formed on a controller T1 interface.

Interface Attributes The following table describes the interface attributes of the FIC-8T1/FIC-8T1-F card.

Table 120 LEDs on the FIC-8T1 and FIC-8T1-F panels

Attribute	Description
Connector	RJ-45
Number of connectors	1
Interface standard	G.703/T1 102
	G.704
	AT&T TR 54016
	AT&T TR 62411
	ANSI T1.403
Interface rate	1.544 Mbps
Cable type	8T1 conversion cable (100-ohm
	straight-through shielded network
	cable)