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# ALLIED TELESYN, INC.
AT-1720AT
Card Type Network Interface Card
NIC Type Ethernet
Maximum Onboard Memory Unidentified
Boot ROM Available
Network Transfer Rate 10Mbps
Topology Linear Bus, Star
Wiring Type Shielded twisted pair
Unshielded twisted pair
AUI transceiver via DB-15 port
Data Bus MCA
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|---------------------+-------+----------------------+-------|
| RJ-45, Twisted pair | CN1 | AUI transceiver via | CN2 |
| | | DB-15 port | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|------+--------+--------+-----------------------------------|
| TX | Green | On | Data is being transmitted |
|------+--------+--------+-----------------------------------|
| TX | Green | Off | Data is not being transmitted |
|------+--------+--------+-----------------------------------|
| RX | Yellow | On | Data is being received |
|------+--------+--------+-----------------------------------|
| RX | Yellow | Off | Data is not being received |
|------+--------+--------+-----------------------------------|
| LNK | Green | On | Link integrity is good |
|------+--------+--------+-----------------------------------|
| LNK | Green | Off | Link integrity is broken |
|------+--------+--------+-----------------------------------|
| COL | Yellow | On | Collision detected on network |
|------+--------+--------+-----------------------------------|
| COL | Yellow | Off | No collision detected on network |
+------------------------------------------------------------+