ADTRAN
======

   DSU III ARC

   Card Type         DSU                                          
   Chip Set          Unidentified                                 
   I/O Options       25-pin DTE ports, V.35 DTE port, dedicated   
                     network port (RJ-48), power                  
   Maximum Data Rate 64Kbps                                       
   Data Bus          External                                     

<gopher://bitreich.org/I/th99/t/A-B/55093-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |          Function           | Label |   Function   | Label |
   |-----------------------------+-------+--------------+-------|
   | Dedicated network port      |  CN1  | Power        |  CN4  |
   | (RJ-48)                     |       |              |       |
   |-----------------------------+-------+--------------+-------|
   | 25-pin DTE port             |  CN2  | Power switch |  SW1  |
   |-----------------------------+-------+--------------+-------|
   | V.35 DTE port               |  CN3  |              |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   | LED |    Color     | Status |          Condition           |
   |-----+--------------+--------+------------------------------|
   | RS  | Unidentified |   On   |       RTS signal high        |
   |-----+--------------+--------+------------------------------|
   | RS  | Unidentified |  Off   |        RTS signal low        |
   |-----+--------------+--------+------------------------------|
   | CS  | Unidentified |   On   |       CTS signal high        |
   |-----+--------------+--------+------------------------------|
   | CS  | Unidentified |  Off   |        CTS signal low        |
   |-----+--------------+--------+------------------------------|
   | TD  | Unidentified |   On   |  Data is being transmitting  |
   |     |              |        |           from DTE           |
   |-----+--------------+--------+------------------------------|
   | TD  | Unidentified |  Off   |      Data is not being       |
   |     |              |        |    transmitting from DTE     |
   |-----+--------------+--------+------------------------------|
   | RD  | Unidentified |   On   | Data is being received from  |
   |     |              |        |           network            |
   |-----+--------------+--------+------------------------------|
   | RD  | Unidentified |  Off   |  Data is not being received  |
   |     |              |        |         from network         |
   |-----+--------------+--------+------------------------------|
   | CD  | Unidentified |   On   |   Frame synchronization is   |
   |     |              |        | established. Device is ready |
   |     |              |        |   to transmit/receive data   |
   |-----+--------------+--------+------------------------------|
   | CD  | Unidentified |  Off   | Frame synchronization is not |
   |     |              |        |  established. Device is not  |
   |     |              |        |  ready to transmit/receive   |
   |     |              |        |             data             |
   |-----+--------------+--------+------------------------------|
   | ALM | Unidentified |   On   |   Open loop, loss of frame   |
   |     |              |        | synchronization, dial backup |
   |     |              |        |  mode, or problem with dial  |
   |     |              |        | backup line alarm condition  |
   |     |              |        |     detected on network      |
   |-----+--------------+--------+------------------------------|
   | ALM | Unidentified |  Off   |   Open loop, loss of frame   |
   |     |              |        | synchronization, dial backup |
   |     |              |        |  mode, or problem with dial  |
   |     |              |        | backup line alarm condition  |
   |     |              |        |   not detected on network    |
   |-----+--------------+--------+------------------------------|
   | TST | Unidentified |   On   | Device is conducting a test  |
   |-----+--------------+--------+------------------------------|
   | TST | Unidentified |  Off   |  Device is not conducting a  |
   |     |              |        |             test             |
   +------------------------------------------------------------+