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

[Image]

                                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 TRNIC     SW501/1            On

  »   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              Off                      On
         controls

                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