3com MSR 20 Manual Do Utilizador

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The DFIC-24FXO24FXS provides 24-port voice subscriber circuit and 24-port voice 
AT0 analog trunk circuit. FXS interfaces process and transmit voice signals over 
data communications networks for 24 regular analog phones, faxes, or AT0 loop 
trunks of telephone exchanges. The FXO interfaces process and transmit voice 
signals over data communications networks for 24 loops of telephone exchanges.

DFIC-24FXO24FXS has two kinds of LEDs, Active and Link.

The following figure illustrates the DFIC-24FXO24FXS panel.

Figure 278   DFIC-24FXO24FXS front panel

DFIC-24FXO24FXS uses a 5 m (16.4 ft.) or 15 m (49.2 ft.) telephone conversion 
cable. At one end of the cable is a D50 male connector that is used to connect to 
the DFIC-24FXO24FXS card; at the other end are 24 RJ11 connectors.

Table 169   Interface attributes of the DFIC-24FXO24FXS module

Connector 

50-pin D-type female connector 

Interface standard 

FXS and FXO interface 

Interface rate 

24 

× FXO interface rate plus 24 × FXS 

interface rate

Table 170   Description of LEDs on the DFIC-24FXO24FXS panel

Active 

OFF means all links are idle. 
Blinking means one or more 
links are occupied. 

OFF means all links are idle. 
Blinking means one or more 
links are occupied. 

Link 

Steady ON if an electric device 
is connected. 

Steady ON means no fault 
occurs on the link