3com MSR 20-20 사용자 설명서

The following figure illustrates the FIC-1G.SHDSL panel:

Figure 233   FIC-1G.SHDSL panel

The following table describes the LEDs on the FIC-1G.SHDSL panel.

The FIC-1G.SHDSL cards use regular telephone cables for connection.

You simply need a telephone cable to connect the RJ11 interface on an 
FIC-1G.SHDSL card to PSTN.

FIC-1POS, the 1-port SDH/SONET interface card, supports interface rates up to 
155.52 Mbps (STM-1/OC-3).

The FIC-1POS uses the protocols such as PPP, Frame Relay and HDLC at the data 
link layer and IP at the network layer. It allows direct transmission of packets over 
SONET/SDH. It supports:

■

Four types of SFP: multi-mode short-haul (1310 nm), single mode medium-haul 
(1310 nm), single mode long-haul (1310 nm), and single-mode ultra-long haul 
(1550 nm).

■

155.52 Mbps fractional interface

The following table describes the interface attributes of the FIC-1POS.

Interface rate 

In single-pair mode, supports the 
sending/receiving independent 
symmetric rates in the range from 192 
kbps to 2304 kbps in steps of 8 kbps. 

Interface cable 

Telephone cable 

Supported services 

G.SHDSL over telephone lines

Table 135   Interface attributes of the FIC-1G.SHDSL

Table 136   LEDs on the FIC-1G.SHDSL panel

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/and transmitted.