PARADYNE CORPORATION

ACCULINK 3164 DSU/CSU

Card Type                  DSU/CSU
NIC Type                   T1
Chip Set                   Unidentified
I/O Options                DTE ports (5), network interface via RJ-45,
                           modem port

                           test jacks (6), power jack, auxiliary port,
                           communications port
Maximum Modem Rate         2400bps
Data Modulation Protocol   V.22
Wiring Type                RJ-48 120ohm shielded twisted pair
Maximum Data Rate          56Kbps (64Kbps full duplex)
Data Bus                   External

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                                CONNECTIONS

          Function            Label            Function           Label

  Test jack - line in          CN1      Modem port via RJ-11       CN10

  Test jack - line in          CN2      DTE port (15-pin           CN11
                                        connector)

  Test jack - line in          CN3      Network interface via      CN12
                                        RJ-45 connector

  Test jack - line out         CN4      15-pin clock port          CN13

  Test jack - line out         CN5      DTE port 1 (25-pin         CN14
                                        serial connector)

  Test jack - line out         CN6      DTE port 2 (25-pin         CN15
                                        serial connector)

  Power Jack                   CN7      DTE port 3 (25-pin         CN16
                                        serial connector)

  Auxiliary port               CN8      DTE port 4 (25-pin         CN17
                                        serial connector)

  Communications port          CN9

                             DIAGNOSTIC LED(S)

   LED       Color       Status                   Condition

    OK       Green         On                DSU/CSU power is on

    OK          Green   Blinking       DSU/CSU is downloading software

    OK          Green      Off        DSU/CSU power is off or detecting a
                                                system failure

   FAIL     Yellow         On         Error has been detected on network

   FAIL         Yellow     Off          Error has not been detected on
                                                   network

   FAIL     Yellow      Blinking      DSU/CSU is conducting a self test

   TST      Yellow         On            DSU/CSU is executing a test

   TST          Yellow     Off         DSU/CSU is not executing a test

   SIG       Green         On         DSU/CSU is receiving a recoverable
                                             signal from network

   SIG       Green         Off         DSU/CSU cannot recover the signal
                                                 from network

   OOF      Yellow         On         Out of frame condition detected on
                                                   network

   OOF          Yellow     Off        Out of frame condition not detected
                                                  on network

   ALM      Yellow         On        Alarm condition detected on network

   ALM          Yellow     Off          Alarm condition not detected on
                                                   network

   EER      Yellow         On          Excessive error rate exceeded on
                                                   network

   EER          Yellow     Off       Excessive error rate not exceeded on
                                                   network

                   DTE DROP/INSERT AND DATA PORT LED(S)

  LED      Color      Status       DTE drop/insert         Data port
                                        port

  LED1     Green        On          A recoverable     DTR signal is high
                                   signal is being
                                    received from
                                      network

  LED1         Green   Off         DSU/CSU cannot      DTR signal is low
                                 recover the signal
                                    from network

  LED2    Yellow        On          Out of frame      Receiving all zeros
                                 condition detected      from the DTE
                                     on network

  LED2         Yellow  Off          Out of frame       Receiving all ones
                                    condition not        from the DTE
                                     detected on
                                      network

  LED2    Yellow     Blinking           N/A              Data is being
                                                          transferred

  LED3    Yellow        On         Alarm condition      Transmitting all
                                     detected on      zeros from the DTE
                                      network

  LED3         Yellow  Off         Alarm condition      Transmitting all
                                   not detected on     ones from the DTE
                                      network

  LED3    Yellow     Blinking           N/A              Data is being
                                                          transferred

  LED4    Yellow        On         A pulse density    CTS signal is high
                                    violation was
                                    detected (and
                                    corrected) on
                                      network

  LED4         Yellow  Off         A pulse density     CTS signal is low
                                  violation was not
                                     detected on
                                      network

  LED5    Yellow        On            A bipolar       RTS signal is high
                                    violation was
                                    detected (and
                                    corrected) on
                                      network

  LED5         Yellow  Off            A bipolar        RTS signal is low
                                  violation was not
                                     detected on
                                      network