CABLETRON SYSTEMS, INC.
=======================

   TRFOT-2, TRFOT-3

   Device Type            Fiber Optic Transceiver                 
   NIC Type               Token Ring                              
   Maximum Onboard Memory Unidentified                            
   Boot ROM               Not available                           
   Network Transfer Rate  4/16Mbps                                
   Topology               Star                                    
   Wiring Type            Unshielded twisted pair (10Base-T)      
                                                                  
                          Fiber optic                             
   Data Bus               External                                

<gopher://bitreich.org/I/th99/n/C-D/42284-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Function       | Label |       Function       | Label |
   |---------------------+-------+----------------------+-------|
   | Power jack          |  CN1  | Fiber optic          |  RX   |
   |                     |       | connector (ST) -     |       |
   |                     |       | receive              |       |
   |---------------------+-------+----------------------+-------|
   | AUI transceiver via |  CN2  | Fiber optic          |  TX   |
   | DB-9                |       | connector (ST) -     |       |
   |                     |       | transmit             |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                 | Label | Position |
   |-----------------------------------------+-------+----------|
   | Phantom drive disabled                  | SW1/C |    On    |
   |-----------------------------------------+-------+----------|
   | Phantom drive enabled                   | SW1/C |   Off    |
   |-----------------------------------------+-------+----------|
   | Cabletron proprietary devices           | SW1/D |    On    |
   |-----------------------------------------+-------+----------|
   | 802.5J compatible devices               | SW1/D |   Off    |
   |------------------------------------------------------------|
   | Note: SW1/C & SW1/D apply to RI/RO applications            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    APPLICATION SETTINGS                    |
   |------------------------------------------------------------|
   |          Setting           | SW1/A | SW1/B | SW1/C | SW1/D |
   |----------------------------+-------+-------+-------+-------|
   | Station application        |  On   |  Off  |  Off  |  Off  |
   | enabled                    |       |       |       |       |
   |----------------------------+-------+-------+-------+-------|
   | Lobe (TCU) application     |  Off  |  Off  |  Off  |  Off  |
   | enabled                    |       |       |       |       |
   |----------------------------+-------+-------+-------+-------|
   | Ring in application        |  On   |  On   |  See  |  See  |
   | enabled                    |       |       | note  | note  |
   |----------------------------+-------+-------+-------+-------|
   | Ring out application       |  Off  |  On   |  See  |  See  |
   | enabled                    |       |       | note  | note  |
   |------------------------------------------------------------|
   | Note: SW1/C & SW1/D may be in either position as           |
   | illustrated in the user configuration table                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   | LED | Color |  Status  |             Condition             |
   |-----+-------+----------+-----------------------------------|
   | PWR | Green |    On    |            Power is on            |
   |-----+-------+----------+-----------------------------------|
   | PWR | Green |   Off    |           Power is off            |
   |-----+-------+----------+-----------------------------------|
   | CU  | Green |    On    |   Phantom detected/valid copper   |
   |     |       |          |               link                |
   |-----+-------+----------+-----------------------------------|
   | CU  | Green | Blinking |   Phantom detected/valid copper   |
   |     |       |          |       link, no data present       |
   |-----+-------+----------+-----------------------------------|
   | CU  |  Red  |    On    |  Phantom not detected. No copper  |
   |     |       |          |               link                |
   |-----+-------+----------+-----------------------------------|
   | FO  | Green |    On    |     Fiber optic link is good      |
   |-----+-------+----------+-----------------------------------|
   | FO  |  Red  |    On    |    Fiber optic link is broken     |
   +------------------------------------------------------------+