ADTRAN
======

   TSU LT

   Card Type    T1 CSU/DSU                                        
   Chip Set     Unidentified                                      
   I/O Options  V.35 DTE port, test jack - in, test jack - out,   
                test jack - monitor ,                             
                                                                  
                RJ-48 control ports (2), T1 network interface via 
                RJ-48, power                                      
   T1 Data Rate 1.544Mbps                                         
   Line Coding  AMI, B8ZS                                         
   Framing      D4, ESF                                           
   Data Bus     External                                          

<gopher://bitreich.org/I/th99/t/A-B/55096-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function       | Label |      Function       | Label |
   |----------------------+-------+---------------------+-------|
   | T1 network port      |  CN1  | Control port -      |  CN6  |
   | (RJ-48)              |       | chain out (RJ-48)   |       |
   |----------------------+-------+---------------------+-------|
   | Test jack - in       |  CN2  | V.35 DTE port       |  CN7  |
   |----------------------+-------+---------------------+-------|
   | Test jack - out      |  CN3  | Power               |  CN8  |
   |----------------------+-------+---------------------+-------|
   | Test jack - monitor  |  CN4  | Power switch        |  SW1  |
   |----------------------+-------+---------------------+-------|
   | Control port - chain |  CN5  |                     |       |
   | in (RJ-48)           |       |                     |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   | LED |    Color     | Status |          Condition           |
   |-----+--------------+--------+------------------------------|
   | PWR | Unidentified |   On   |         Power is on          |
   |-----+--------------+--------+------------------------------|
   | PWR | Unidentified |  Off   |         Power is off         |
   |-----+--------------+--------+------------------------------|
   | ERR | Unidentified |   On   |  Error has been detected on  |
   |     |              |        |           network            |
   |-----+--------------+--------+------------------------------|
   | ERR | Unidentified |  Off   | Error has not been detected  |
   |     |              |        |          on network          |
   |-----+--------------+--------+------------------------------|
   | 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             |
   |-----+--------------+--------+------------------------------|
   | 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         |
   |-----+--------------+--------+------------------------------|
   | RS  | Unidentified |   On   |       RTS signal high        |
   |-----+--------------+--------+------------------------------|
   | RS  | Unidentified |  Off   |        RTS signal low        |
   |-----+--------------+--------+------------------------------|
   | CS  | Unidentified |   On   |       CTS signal high        |
   |-----+--------------+--------+------------------------------|
   | CS  | Unidentified |  Off   |        CTS signal low        |
   +------------------------------------------------------------+