BROOKTROUT TECHNOLOGY, INC.
===========================

   TRNIC+I24T

   Card Type   T1/Fax card                                        
   I/O Options PEB connector, 15-pin DSX-1 connector, MVIP        
               connector                                          
   Data Bus    8-bit ISA                                          

<gopher://bitreich.org/I/th99/t/A-B/55390-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |         Function          | Label |    Function    | Label |
   |---------------------------+-------+----------------+-------|
   | PEB connector             |  CN1  | MVIP connector | J401  |
   |---------------------------+-------+----------------+-------|
   | 15-pin D-sub DSX-1        | J401  |                |       |
   | connector                 |       |                |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function                |  Label  | Position |
   |---------------------------------------+---------+----------|
   |>> | Clocking signals generated by T1  | SW501/1 |   Off    |
   |---+-----------------------------------+---------+----------|
   |   | Clocking signals generated by     | SW501/1 |    On    |
   |   | TRNIC                             |         |          |
   |---+-----------------------------------+---------+----------|
   |>> | Super frame mode                  | SW501/2 |   Off    |
   |---+-----------------------------------+---------+----------|
   |   | Extended super frame mode         | SW501/2 |    On    |
   |---+-----------------------------------+---------+----------|
   |>> | B8ZS line coding                  | SW501/3 |   Off    |
   |---+-----------------------------------+---------+----------|
   |   | AMI line coding                   | SW501/3 |    On    |
   |---+-----------------------------------+---------+----------|
   |>> | Factory configured - do not alter | SW501/7 |   Off    |
   |---+-----------------------------------+---------+----------|
   |>> | Factory configured - do not alter | SW501/8 |   Off    |
   |---+-----------------------------------+---------+----------|
   |>> | PEB local bus type                | SW502/1 |   Off    |
   |---+-----------------------------------+---------+----------|
   |   | MVIP local bus type               | SW502/1 |    On    |
   |---+-----------------------------------+---------+----------|
   |>> | MVIP clock master set to master   | SW502/6 |   Off    |
   |---+-----------------------------------+---------+----------|
   |   | MVIP clock master set to slave    | SW502/6 |    On    |
   |---+-----------------------------------+---------+----------|
   |>> | Loopback mode disabled            |  SW102  |   Off    |
   |---+-----------------------------------+---------+----------|
   |   | Loopback mode enabled             |  SW102  |    On    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 T1 CABLE LENGTH SETTTINGS                  |
   |------------------------------------------------------------|
   |  Cable Length  |   SW501/4    |   SW501/5    |   SW501/6   |
   |----------------+--------------+--------------+-------------|
   |  0 to 132 ft.  |      On      |      On      |     On      |
   |----------------+--------------+--------------+-------------|
   | 133 to 266 ft. |     Off      |      On      |     On      |
   |----------------+--------------+--------------+-------------|
   | 267 to 398 ft. |      On      |     Off      |     On      |
   |----------------+--------------+--------------+-------------|
   | 399 to 532 ft. |     Off      |     Off      |     On      |
   |----------------+--------------+--------------+-------------|
   | 533 to 654 ft. |      On      |      On      |     Off     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      MVIP TERMINATION                      |
   |------------------------------------------------------------|
   |      Setting       |      SW502/2      |      SW502/3      |
   |--------------------+-------------------+-------------------|
   |    Unterminated    |        Off        |        Off        |
   |--------------------+-------------------+-------------------|
   |     Terminated     |        On         |        On         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     MVIP STREAM SELECT                     |
   |------------------------------------------------------------|
   |       Mode       |      SW502/4       |      SW502/5       |
   |------------------+--------------------+--------------------|
   |       6/7        |        Off         |        Off         |
   |------------------+--------------------+--------------------|
   |       4/5        |         On         |        Off         |
   |------------------+--------------------+--------------------|
   |       2/3        |        Off         |         On         |
   |------------------+--------------------+--------------------|
   |       0/1        |         On         |         On         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    SYNC SOURCE CONTROL                     |
   |------------------------------------------------------------|
   |           Setting           |    SW502/6    |   SW502/7    |
   |-----------------------------+---------------+--------------|
   |       TRNIC controls        |      Off      |     Off      |
   |-----------------------------+---------------+--------------|
   | Secondary net card controls |      Off      |      On      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   FRAMING SIGNAL OUTPUT                    |
   |------------------------------------------------------------|
   |      Setting       |      SW502/6      |      SW502/7      |
   |--------------------+-------------------+-------------------|
   |   Disable output   |        On         |        Off        |
   |--------------------+-------------------+-------------------|
   |   Enable output    |        On         |        On         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   | LED |    Color     | Status |          Condition           |
   |-----+--------------+--------+------------------------------|
   | D1  |     Red      |   On   |   Card in network loopback   |
   |     |              |        |             mode             |
   |-----+--------------+--------+------------------------------|
   | D2  |     Red      |   On   |        T1 signal lost        |
   |-----+--------------+--------+------------------------------|
   | D3  |    Yellow    |   On   |    Not synchronized on T1    |
   |     |              |        |            signal            |
   |-----+--------------+--------+------------------------------|
   | D4  |    Green     |   On   |   Operating in normal mode   |
   |-----+--------------+--------+------------------------------|
   | FRM | Unidentified |   On   |       T1 framing error       |
   |-----+--------------+--------+------------------------------|
   | BPV | Unidentified |   On   |     T1 bipolar violation     |
   |-----+--------------+--------+------------------------------|
   | CRC | Unidentified |   On   |    Discrepancy in cyclic     |
   |     |              |        |       redundancy check       |
   +------------------------------------------------------------+