
64CHAPTER 7: FLEXIBLE INTERFACE CARDS
Table 6 Interface attributes of 
| Attribute | Description | 
 | 
| 
 | 
 | 
 | 
| Services Supported | 
 | Dialup | 
| 
 | 
 | through | 
| 
 | DDN leased line | Modem | 
| 
 | Backup | |
| 
 | 
 | |
| 
 | Terminal access | Async | 
| 
 | service | leased | 
| 
 | 
 | line | 
| 
 | 
 | Dumb | 
| 
 | 
 | terminal | 
| 
 | 
 | access | 
| 
 | 
 | 
 | 
Panel and Interface LEDs The front panel of 
Figure 5 4-port  Sync/Async panel
The meanings of the LEDs on 
Table 7 4-port  FIC LEDs
| LINK | OFF means the link is not connected. ON means the link is connected. | 
| 
 | 
 | 
| ACT | OFF means no data is being transceived. Blinking means data is being | 
| transceived. | |
| 
 | 
 | 
The front panel of 8-port  FIC is shown as follows:
Figure 6 8-port  FIC front panel
On 
Blinking means data is being transceived.
Interface Cable The FIC uses sync/async serial interface cable with DB28 connector. V.24 (RS232) DTE cable: DB25 (male) connector at the network end
■V.24 (RS232) DCE cable: DB25 (female) connector at the network end
■V.35 DTE cable: 34PIN (male) connector at the network end
■V.35 DCE cable: 34PIN (female) connector at the network end
