3com MSR 20 Manual Do Utilizador

Step 4: Power on the router. Check the behavior of the LINK LED for the slot on 
the card panel: OFF means the line has problem and signal is out of 
synchronization. Check the link status.

The 4-port/8-port T1 ATM inverse multiplexing interface card 
(FIC-IMA-4T1/FIC-IMA-8T1) provides four/eight T1 interfaces that support the IMA 
technology. Their network application is similar to that of the 
FIC-IMA-4E1/FIC-IMA-8E1 card.

The following table describes the interface attributes of the 
FIC-IMA-4T1/FIC-IMA-8T1:

The following figures illustrate the FIC-IMA-4T1 and FIC-IMA-8T1 panels:

Figure 263   FIC-IMA-4T1 panel

Table 159   Interface attributes of the FIC-IMA-4T1/FIC-IMA-8T1

Connector DB-68 

Number of 
connectors 

1 

Interface standard 

ITU-G.703, ITU-G.704 

Cable type 

4T1 conversion cable 
(100-ohm 
straight-through 
shielded) 

8T1 conversion cable (100-ohm 
straight-through shielded) 

Max transmission 
distance 

150 m (492.1 ft.) 

Operating mode 

ATM T1 independent link/IMA bundle mode 

Supported service 

AAL5 

Protocol 

PPPoA, PPPoEoA, IPoA, IPoEoA 

Transmission rate 

CBR/VBR-rt/VBR-nrt/UBR