STOLLMANN GMBH
==============

   TA+ X.21

   Card Type                ISDN TA                               
   Chip Set                 Unidentified                          
   Maximum Data Rate        64Kbps x 2                            
   Data Bus                 External                              
   Data Modulation Protocol V.110, 1TR6, DSS1, X.30               

<gopher://bitreich.org/I/th99/t/S-T/51972-1.png>
   

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   |  LED   | Color | Status |            Condition             |
   |--------+-------+--------+----------------------------------|
   |   T    |  Red  |   On   |     TA is transmitting data      |
   |--------+-------+--------+----------------------------------|
   |   T    |  Red  |  Off   |   TA is not transmitting data    |
   |--------+-------+--------+----------------------------------|
   |   R    |  Red  |   On   |       TA is receiving data       |
   |--------+-------+--------+----------------------------------|
   |   R    |  Red  |  Off   |     TA is not receiving data     |
   |--------+-------+--------+----------------------------------|
   |   C    |  Red  |   On   |        DTR signal is high        |
   |--------+-------+--------+----------------------------------|
   |   C    |  Red  |  Off   |        DTR signal is low         |
   |--------+-------+--------+----------------------------------|
   |   I    |  Red  |   On   |     Carrier signal detected      |
   |--------+-------+--------+----------------------------------|
   |   I    |  Red  |  Off   |   Carrier signal not detected    |
   |-------------------------+----------------------------------|
   |  L2 Status   |    L1    |            Condition             |
   |              |  Status  |                                  |
   |--------------+----------+----------------------------------|
   |      On      |    On    | TA is performing power-up tests  |
   |              |          |         or is connected          |
   |--------------+----------+----------------------------------|
   |   Blinking   | Blinking |         TA is resetting          |
   |--------------+----------+----------------------------------|
   |     Off      |    On    |           TA is ready            |
   |--------------+----------+----------------------------------|
   |   .25s on,   |    On    |       Call is in progress        |
   |   .75s off   |          |                                  |
   |--------------+----------+----------------------------------|
   |   .75s on,   |    On    |    Negotiation is in progress    |
   |   .25s off   |          |                                  |
   |--------------+----------+----------------------------------|
   |  1s on, 1s   |    On    |     No ISDN signal detected      |
   |     off      |          |                                  |
   |--------------+----------+----------------------------------|
   | .5s on, .5s  |    On    |          Remote TA busy          |
   |     off      |          |                                  |
   |--------------+----------+----------------------------------|
   | .3s on, .3s  |    On    |     Remote TA did not answer     |
   |     off      |          |                                  |
   |--------------+----------+----------------------------------|
   |   .25s on,   |    On    |  Could not connect to remote TA  |
   |   .25s off   |          |                                  |
   |--------------+----------+----------------------------------|
   |     Off      |   Off    |     Hardware error detected      |
   |--------------+----------+----------------------------------|
   |   Blinking   |   Off    |     Hardware error detected      |
   |--------------+----------+----------------------------------|
   |     Off      | .25s on, |         ISDN has failed          |
   |              | .75s off |                                  |
   +------------------------------------------------------------+

                      Proprietary Command Sets

           See document V1973 for a full command summary.