3com MSR 20 Manual Do Utilizador

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HAPTER

 2: S

MART

 I

NTERFACE

 C

ARDS

Step 2: Connect the other end of the T1 cable to the relevant equipment;

Step 3: Check the status of LINK LED on the SIC-1TPRI/SIC-1T1-F panel: ON means 
the link is connected and OFF means the link is not connected. In the latter case, 
check the line.

1/2-port analog modem interface card (SIC-1AM/SIC-2AM) integrates the 
functions of asynchronous interface and external modem, that is, allowing 1/2 
channel(s) of remote modem subscribers to directly access the Router. They 
support:

■

Data rate of 56 kbps.

■

Accessing and handling analog signals and transmitting the processed data to 
the Router host through the serial interface bus. And also, processing the data 
received from the host and then transmitting them to the PSTN via the 
telephone port.

The interface attributes of SIC-1AM/SIC-2AM are given in the following table:

Figure 28   SIC-1AM panel

Figure 29    SIC-2AM panel

Table 10   Interface attributes of SIC-1AM/SIC-2AM

Connector type 

RJ11 

Number of connectors 

1 (SIC-1AM)

2 (SIC-2AM) 

Cable type 

Telephone cable with ferrite core 

Maximum speed 

56 kbps 

Supported standard 

ITU-T V.90, V.34 (33.6 kbps), V.FC, 
V.32 bis, V.32, V.22 bis, V.22A/B, 
V.23, V.21, Bell 212A a, Bell 103. 

Supported service 

Modem dial-up