ADTRAN
======

   TSU

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

<gopher://bitreich.org/I/th99/t/A-B/55090-1.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    |
   |     |              |        |       within 1 second        |
   |-----+--------------+--------+------------------------------|
   | ERR | Unidentified |  Off   | Error has not been detected  |
   |     |              |        |       within 1 second        |
   |-----+--------------+--------+------------------------------|
   | ALM | Unidentified |   On   | Alarm condition detected on  |
   |     |              |        |           network            |
   |-----+--------------+--------+------------------------------|
   | ALM | Unidentified |  Off   | Alarm condition not detected |
   |     |              |        |          on network          |
   |-----+--------------+--------+------------------------------|
   | LB  | Unidentified |   On   |    Device is conducting a    |
   |     |              |        |        loopback test         |
   |-----+--------------+--------+------------------------------|
   | LB  | Unidentified |  Off   |  Device is not conducting a  |
   |     |              |        |        loopback test         |
   |-----+--------------+--------+------------------------------|
   | TD  | Unidentified |   On   |      DTE data is being       |
   |     |              |        |         transmitted          |
   |-----+--------------+--------+------------------------------|
   | TD  | Unidentified |  Off   |    DTE data is not being     |
   |     |              |        |         transmitted          |
   |-----+--------------+--------+------------------------------|
   | RD  | Unidentified |   On   |  DTE data is being received  |
   |-----+--------------+--------+------------------------------|
   | RD  | Unidentified |  Off   |    DTE data is not being     |
   |     |              |        |           received           |
   |-----+--------------+--------+------------------------------|
   | RS  | Unidentified |   On   |       RTS signal high        |
   |-----+--------------+--------+------------------------------|
   | RS  | Unidentified |  Off   |        RTS signal low        |
   |-----+--------------+--------+------------------------------|
   | CS  | Unidentified |   On   |       CTS signal high        |
   |-----+--------------+--------+------------------------------|
   | CS  | Unidentified |  Off   |        CTS signal low        |
   +------------------------------------------------------------+