3Com MSR 30, MSR 20, MSR 50 manual ohm FIC-IMA-4E1 panel, LEDs on the FIC-IMA-4E1/FIC-IMA-8E1 panel

			FIC-IMA-4E1/FIC-IMA-8E1 213
Table 157 Interface attributes of the FIC-IMA-4E1/FIC-IMA-8E1
	Description
	FIC-IMA-4E1	FIC-IMA-8E1	FIC-IMA-4E1 (120-ohm) FIC-IMA-8E1
Attribute	(75-ohm)	(75-ohm)		(120-ohm)
Cable type	75-ohm 4E1	75-ohm 8E1	120-ohm	120-ohm 8E1 conversion
	conversion	conversion	4E1	cable
	cable	cable	conversion
			cable
Max transmission	500 m (1640.4 ft.)		150 m (492.1 ft.)
distance
Operating mode	ATM E1 independent link/IMA bundle mode
Supported service	AAL5
Protocol	PPPoA, PPPoEoA, IPoA, IPoEoA
Transmission rate	CBR/VBR-rt/VBR-nrt/UBR

Interface LEDs The following figures illustrate the FIC-IMA-4E1 and FIC-IMA-8E1 (75-ohm) panels:

Figure 259 75-ohm FIC-IMA-4E1 panel

Figure 260 75-ohm FIC-IMA-8E1 panel

The following table describes the LEDs on the FIC-IMA-4E1/FIC-IMA-8E1 panel:

Table 158 LEDs on the FIC-IMA-4E1/FIC-IMA-8E1 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-IMA-4E1 card provides four E1 ports and uses a 120-ohm or 75-ohm 4E1 conversion cable. The two types of 4E1 conversion cables look similar. Both of them have a DB-68 connector at one end for connecting the router. However, the 75-ohm 4E1 conversion cable contains eight coaxial cables and the 120-ohm 4E1 conversion cable contains four twisted pairs.