3com MSR 20-20 사용자 설명서

MSR series routers adopt modular design and support a wide range of optional 
smart interface cards (SICs) and double smart interface cards (DSICs). A SIC 
interface card occupies one SIC slot of an MSR router and a DSIC interface card 
occupies two SIC slots of a router. The SIC/DSIC series interface cards provide 
abundant interfaces, such as synchronous/asynchronous serial interface, Ethernet 
interface, E1/T1, ISDN BRI/PRI, ADSL, audio interface, Layer 2 switching interface, 
and so on.

Among this series interface cards, the Layer 2 switching interface cards (SIC-4FSW 
and DSIC-9FSW) each have a corresponding PoE-capable one, which can provide 
-48 VDC power to remote powered devices (PDs, such as IP phone, WLAN AP, 
network camera) through straight-through cables as long as installed in a PoE 
router.

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1-port 10Base-T/100Base-TX Ethernet interface card (SIC-1FEA), in which FE 
stands for Fast Ethernet and A is used to differentiate SIC-1FEA from the 1FE 
module. SIC-1FEA is used to implement the communication between Routers and 
LANs. It supports:

■

Effective transmission distance of 100 meters with category-5 twisted pair 
cables;

■

Operating speeds of both 100 Mbps and 10 Mbps and autosensing;

■

Both full duplex (in common use) and half-duplex operating modes.

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The interface attributes of SIC-1FEA are given in the following table:

Table 1   Interface attributes of SIC-1FEA

Connector type 

RJ-45 

Interface type 

MDI 

Number of connectors 

1 

Cable type 

Straight-through Ethernet cable