3com MSR 20 Manual De Usuario

Figure 174   Ethernet cable

Step 1: Connect one end of the cable to the Ethernet interface on the router and 
the other end to another device.

Step 2: Power on the router and check the behavior of the LINK LED on the panel. 
ON means a link is present and OFF means no link is present. In the latter case, 
check the line status.

FIC-1GEF/FIC-2GEF, the 1-port/2-port 1000Base-SX/1000Base-LX GE fiber 
interface card, is used for router-to-LAN communication.

The cards support:

■

Five types of 1000Base-SX/1000Base-LX SFP modules: multi-mode short-haul 
(850 nm), single-mode medium-haul (1310 nm), single-mode long-haul (1310 
nm), single mode long-haul (1550 nm), and single-mode ultra-long haul (1550 
nm)

■

Operation at 1000 Mbps

■

Full duplex

The following table describes the interface attributes of the FIC-1GEF/FIC-2GEF:

Table 106   Interface attributes of the FIC-1GEF/FIC-2GEF

Connector

SFP 

Number of 
interfaces

1

2 

Interface 
standard

802.3, 802.3u, 802.3ab 

Optical 
transmi
tter 
power 

Type Multi-mode 

short-haul 
(850 nm) 

Single-mode 
medium-ha
ul (1310 
nm) 

Long-haul 
(1310 nm) 

Long-haul 
(1550 nm) 

Ultra-long haul 
(1550 nm) 

Min. 

-9.5 dBm 

-9 dBm 

-2 dBm 

-4 dBm 

-4 dBm 

Max. 

0 dBm 

-3 dBm 

5 dBm 

1 dBm 

2 dBm 

Receiver 
sensitivity

-17 dBm 

-20 dBm 

-23 dBm 

-21 dBm 

-22 dBm 

Central 
wavelength

850 nm 

1310 nm 

1310 nm 

1550 nm 

1550 nm