
DIGITAL LINK

SOLO 56/64 DSU/CSU (REV. B)

Card Type                 DSU/CSU
NIC Type                  T1
Chip Set                  Unidentified
I/O Options               AC power connector, DC power connector, data port
                          via 25-pin connector

                          serial port (RS-232), network interface via
                          15-pin connector
Wiring Type               RJ-48 shielded twisted pair
Maximum Data Rate         56Kbps (64Kbps clear channel)
Data Bus                  External

[Image]

                                CONNECTIONS

         Function            Label            Function             Label

  AC power connector          CN1      Network port via 15-pin      CN4
                                       connector

  DC power connector          CN2      Serial port                  CN5

  Data port via 25-pin        CN3      Fuse                         F1
  connector

                        USER CONFIGURABLE SETTINGS

                   Setting                       Label        Position

     Data port format V.35 selected             S1/1            Off

      Data port format RS-449 selected           S1/1            On

     Factory configured - do not alter          S1/2            Off

     Factory configured - do not alter          S1/5            Off

     Factory configured - do not alter          S1/6            Off

     Factory configured - do not alter          S1/7            Off

     Factory configured - do not alter          S1/8            Off

     56Kbps enabled                             S2/1            Off

      64Kbps enabled                             S2/1            On

     Network 64Kbps scrambler disabled          S2/2            Off

      Network 64Kbps scrambler enabled           S2/2            On

     Network V.54 loop code enabled             S2/3            Off

      Network V.54 loop code disabled            S2/3            On

     Network timing source enabled              S2/4            Off

      Internal timing source enabled             S2/4            On

     Serial port stop bits (2)                  S2/5            Off

      Serial port stop bits (1)                  S2/5            On

     Word length 8-bit enabled                  S2/11           Off

      Word length 7-bit enabled                  S2/11           On

     DIP switch configuration enabled           S2/12           Off

      Terminal configuration enabled             S2/12           On

  Note: Off corresponds to the 1 or closed position.

                       DATA PORT LOSS TYPE SELECTION

           Setting                    SW1/3                  SW1/4

        RTS mode enabled              Off                    Off

         DTR mode enabled              Off                    On

             Disabled                   On                    Off

                        SERIAL PORT RATE SELECTION

          Setting               SW2/6           SW2/7           SW2/8

            1200bps              Off              On             On

            2400bps              Off              On             Off

            4800bps              Off             Off             On

           9600bps              Off             Off             Off

            14.4Kbps              On              On             On

            19.2Kbps              On              On             Off

            28.8Kbps              On             Off             On

            38.4Kbps              On             Off             Off

  SERIAL PORT PARITY SELECTION

  Setting     SW2/9     SW2/10

   None        Off       Off

    Odd        Off        On

   Even        On        Off

                             DIAGNOSTIC LED(S)

   LED         Color         Status                 Condition

   PWR         Green           On           DSU/CSU power is on and has
                                               passed the self test

   PWR          Red            On         DSU/CSU power is on; self test
                                            failed. Light changes green
                                                 after 10seconds

   PWR           Red/Green  Blinking       DSU/CSU is downloading code

   PWR           Yellow     Blinking      DSU/CSU power is on; self test
                                                    is running

   PWR           Yellow        On         DSU/CSU is on; test other than
                                               self test is running

   PWR            None         Off                 Power is off

   NET         Green           On          DSU/CSU is receiving a signal
                                                   from network

   NET          Red            On          DSU/CSU cannot synchronize to
                                                  network frame

            NET  Red/Green  Blinking       DSU/CSU is detecting a frame
                                            error or illegal BPVs from
                                                     network

   NET           Yellow        On         DSU/CSU is detecting CMI, OOS,
                                         or OOF error signal from network

   NET            None         Off          DSU/CSU is not receiving a
                                               signal from network

   INB             Red         On            DSU/CSU is in frame relay
                                            in-band management mode; no
                                          packets or HDLC flags have been
                                              received from network

   INB           Yellow        On            DSU/CSU is in frame relay
                                            in-band management mode; no
                                           frame relay packets have been
                                                 detected network

   INB            Green        On            DSU/CSU is in frame relay
                                          in-band management mode; frame
                                         relay packets have been detected
                                                     network

   INB           Red/Green  Blinking        Error detected in the frame
                                            relay packets received from
                                                     network

   INB            None         Off          DSU/CSU not in frame relay
                                                 management mode

   NLBK            Red         On        DSU or CSU loopback initiated by
                                            user or management station

   NLBK            Red      Blinking         Loopback in progress: CSU
                                           simplex reversal occurring or
                                         DSU detecting non-latching codes
                                                    in 56Kbps

   NLBK            Red         Off         DSU or CSU loopback test not
                                                     running

   ACK           Yellow        On            Remote loop (up or down)
                                          detected - Press buttons to run
                                         (up) or (down) remote loop test

   ACK           Yellow     Blinking       Remote loop (up or down) test
                                                    successful

   ACK           Yellow        Off         DSU/CSU remote loop test not
                                                     running

   DTE           Yellow        On          DTE loopback running: LT not
                                          asserted - Press button to run
                                                       test

   DTE           Yellow     Blinking         DTE loopback running: LT
                                                     asserted

   DTE           Yellow        Off           DTE loopback not running

    TD            Green        On        DSU/CSU is detecting pulses from
                                                     the DTE

    TD            Green        Off        DSU/CSU is not detecting pulses
                                                     from DTE

    RD            Green        On        DSU/CSU is receiving pulses from
                                                     network

    RD            Green        Off        DSU/CSU is not receiving pulses
                                                   from network

   RTS           Yellow        On               RTS signal is high

   RTS           Yellow        Off              RTS signal is low

   CTS           Yellow        On               CTS signal is high

   CTS           Yellow        Off              CTS signal is low

   DTR           Yellow        On               DTR signal is high

   DTR           Yellow        Off              DTR signal is low

