ALPHA TELECOM, INC.
===================

   UT620F

   Card Type        ISDN NT1                                      
   Chip Set         Unidentified                                  
   I/O Options      Power, Terminal S/T interface via RJ-45       
                    (2),Network U interface via RJ-45             
   T1 Transfer Rate 1.44Mbps                                      
   Frame Type       AMI, 2B1Q                                     
   Data Bus         External                                      

<gopher://bitreich.org/I/th99/t/A-B/55073-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function        | Label |      Function      | Label |
   |-----------------------+-------+--------------------+-------|
   | ISDN U interface      |  CN1  | ISDN S/T interface |  CN3  |
   | (RJ-45)               |       | (RJ-45)            |       |
   |-----------------------+-------+--------------------+-------|
   | ISDN S/T interface    |  CN2  | Power              |  CN4  |
   | (RJ-45)               |       |                    |       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Label | Position  |
   |----------------------------------------+-------+-----------|
   |>> | Extended passive bus               |  SW3  |    Off    |
   |---+------------------------------------+-------+-----------|
   |   | Short passive bus                  |  SW3  |    On     |
   |---+------------------------------------+-------+-----------|
   |   | Local power supply set to AD62010  |  SW4  |    On     |
   |---+------------------------------------+-------+-----------|
   |   | Local power supply set to SP62029  |  SW4  |    Off    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 S/T TERMINATION SELECTION                  |
   |------------------------------------------------------------|
   |         Setting          | SW1/1 | SW1/2 |  JP3   |  JP4   |
   |--------------------------+-------+-------+--------+--------|
   |>> |  100Ohm resistance   |  On   |  On   |  Open  |  Open  |
   |   |       enabled        |       |       |        |        |
   |---+----------------------+-------+-------+--------+--------|
   |   |   50Ohm resistance   |  On   |  On   | Closed | Closed |
   |   |       enabled        |       |       |        |        |
   |---+----------------------+-------+-------+--------+--------|
   |   | Resistance disabled  |  Off  |  Off  |  N/A   |  N/A   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIAGNOSTIC LED(S)                      |
   |------------------------------------------------------------|
   |  LED  | Color  |  Status  |           Condition            |
   |-------+--------+----------+--------------------------------|
   |  PWR  | Green  |    On    |          Power is on           |
   |-------+--------+----------+--------------------------------|
   |  PWR  | Green  |   Off    |          Power is off          |
   |-------+--------+----------+--------------------------------|
   | S/T&U |  Red   |    On    |      U interface inactive      |
   |-------+--------+----------+--------------------------------|
   | S/T&U |  Red   | Blinking |   U interface connection is    |
   |       |        |  (fast)  |       being established        |
   |-------+--------+----------+--------------------------------|
   | S/T&U |  Red   | Blinking |    U interface active; S/T     |
   |       |        |  (slow)  |       interface inactive       |
   |-------+--------+----------+--------------------------------|
   | S/T&U |  Red   |   Off    |    U & S/T interface active    |
   |-------+--------+----------+--------------------------------|
   | ULBK  | Yellow |    On    | Central office is conducting a |
   |       |        |          |    loopback test on device     |
   |-------+--------+----------+--------------------------------|
   | ULBK  | Yellow |   Off    |     Central office is not      |
   |       |        |          | conducting a loopback test on  |
   |       |        |          |             device             |
   +------------------------------------------------------------+