TELEBIT CORPORATION
===================

   TRAILBLAZER PLUS/T2000

   Card Type                    Modem (synchronous/asynchronous)  
   Processor                    Motorola 68000                    
   Processor Speed              Unidentified                      
   Chipset                      Unidentified                      
   Maximum Data Rate            18Kbps                            
   Data Bus                     Serial                            
   Data Modulation              Bell 103A/212A                    
                                                                  
                                ITU-T V.22, V.22bis               
                                                                  
                                Telebit PEP                       
   Error Correction/Compression MNP3                              

<gopher://bitreich.org/I/th99/t/S-T/52793-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |  Function  |  Label  |       Function        |    Label    |
   |------------------------------------------------------------|
   | DC power        |    CN1    | Talk/Data switch       | SW1 |
   |-----------------+-----------+------------------------+-----|
   | RS-232/422      |    CN2    | Configuration A/B      | SW2 |
   |                 |           | switch                 |     |
   |-----------------+-----------+------------------------+-----|
   | Line in         |    CN3    | Power switch           | SW3 |
   |-----------------+-----------+------------------------+-----|
   | Line out        |    CN4    |                        |     |
   |------------------------------------------------------------|
   |      Note: The exact locations of SW1 and SW2 are          |
   |      unidentified                                          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Setting           |    Label    |    Position    |
   |-----------------------------+-------------+----------------|
   | i 1MB ROMs installed        |     E1      |   Pins 1 & 2   |
   |                             |             |     closed     |
   |-----------------------------+-------------+----------------|
   | 512KB ROMs installed        |     E1      |   Pins 2 & 3   |
   |                             |             |     closed     |
   |------------------------------------------------------------|
   |      Note: When installing 512KB ROMs, the chips should be |
   |      installed in the holes of the sockets furthest from   |
   |      the CPU.                                              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   | LED |    Color     | Status |          Condition           |
   |-----+--------------+--------+------------------------------|
   | FST | Unidentified |   On   | Modem is using PEP protocol  |
   |-----+--------------+--------+------------------------------|
   | FST | Unidentified |  Off   |    Modem is not using PEP    |
   |     |              |        |           protocol           |
   |-----+--------------+--------+------------------------------|
   | SLW | Unidentified |   On   |   Modem is using Bell 103,   |
   |     |              |        |  Bell 212, V.22, or V.22bis  |
   |     |              |        |           protocol           |
   |-----+--------------+--------+------------------------------|
   | SLW | Unidentified |  Off   | Modem is not using Bell 103, |
   |     |              |        |  Bell 212, V.22, or V.22bis  |
   |     |              |        |           protocol           |
   |-----+--------------+--------+------------------------------|
   | OH  | Unidentified |   On   |      Modem is off-hook       |
   |-----+--------------+--------+------------------------------|
   | OH  | Unidentified |  Off   |       Modem is on-hook       |
   |-----+--------------+--------+------------------------------|
   | RD  | Unidentified |   On   |   Modem is receiving data    |
   |-----+--------------+--------+------------------------------|
   | RD  | Unidentified |  Off   | Modem is not receiving data  |
   |-----+--------------+--------+------------------------------|
   | SD  | Unidentified |   On   |  Modem is transmitting data  |
   |-----+--------------+--------+------------------------------|
   | SD  | Unidentified |  Off   |  Modem is not transmitting   |
   |     |              |        |             data             |
   |-----+--------------+--------+------------------------------|
   | CTS | Unidentified |   On   |      CTS signal is high      |
   |-----+--------------+--------+------------------------------|
   | CTS | Unidentified |  Off   |      CTS signal is low       |
   |-----+--------------+--------+------------------------------|
   | DTR | Unidentified |   On   |      DTR signal is high      |
   |-----+--------------+--------+------------------------------|
   | DTR | Unidentified |  Off   |      DTR signal is low       |
   |-----+--------------+--------+------------------------------|
   | MR  | Unidentified |   On   |         Power is on          |
   |-----+--------------+--------+------------------------------|
   | MR  | Unidentified |  Off   |         Power is off         |
   +------------------------------------------------------------+

                     Proprietary AT Command Set

                  The command set is unidentified.