PARADYNE CORPORATION

ACCULINK 3165 DSU/CSU

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

                           test jacks (2), power jack, 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      Communication port           CN5

  Test jack - line in        CN2      Modem port via RJ-11         CN6

  Power Jack                 CN3      Network interface via        CN7
                                      RJ-45 connector

  DTE port (25-pin           CN4
  serial connector)

                             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

   DTR       Green         On                 DTR signal is high

   DTR          Green      Off                DTR signal is low

   TXD      Yellow         On          Receiving all zeros from the DTE

   TXD          Yellow     Off         Receiving all ones from the DTE

   TXD      Yellow      Blinking          Data is being transferred

   RXD      Yellow         On        Transmitting all zeros from the DTE

   RXD          Yellow     Off        Transmitting all ones from the DTE

   RXD      Yellow      Blinking          Data is being transferred

   CTS      Yellow         On                 CTS signal is high

   CTS          Yellow     Off                CTS signal is low

   RTS      Yellow         On                 RTS signal is high

   RTS          Yellow     Off                RTS signal is low