ASTROCOM

T - SERIES

Card Type               CSU/DSU
NIC Type                T1, Ethernet
Chip Set                Unidentified
I/O Options             AC power connector, RJ-45 UTP connector, RG58A/U
                        50ohm coaxial, DTE ports via 25-pin connector (2),
                        serial port via 9-pin connector, network interface
                        via RJ-48 connector, line jack - transmit/receive,
                        monitor jack - transmit/receive, unit jack -
                        transmit/receive
Wiring Type             RJ-48 T1

                        RJ-45 Unshielded twisted pair

                        RG58A/U 50ohm coaxial
Maximum Data Rate       64Kbps
Data Bus                External

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                                CONNECTIONS

         Function            Label            Function            Label

  AC power connector          CN1      Network interface via       CN7
                                       RJ-48 connector

  Serial port via 9-pin       CN2      Network interface via       CN8
  connector                            RJ-48 connector

  RJ-45 UTP connector         CN3      Line jacks                  CN9

  RG-58A/U 50ohm coaxial      CN4      Monitor jacks              CN10

  DTE port 1 via 25-pin       CN5      Unit jacks                 CN11
  connector

  DTE port 2 via 25-pin       CN6      Power switch                SW1
  connector

                             DIAGNOSTIC LED(S)

   LED      Color          Status                   Condition

   OOF       Red             On           Network signal is out of frame
                                           synchronization, in red alarm
                                                      status

   OOF       Red            Off           Network signal is out of frame
                                          synchronization or in red alarm
                                                      status

   YEL           Amber       On            Yellow alarm signal received
                                                   from network

   YEL           Amber      Off          Yellow alarm signal not received
                                                   from network

   AIS       Red             On           Blue alarm signal received from
                                                     network

   AIS       Red            Off           Blue alarm signal not received
                                                   from network

   LOS           Red         On            Network signal has been lost

   LOS           Red        Off          Network signal has not been lost

   ERR           Amber       On              BPV, CSS, or SES error(s)
                                               detected on network

   ERR           Amber      Off            BPV, CSS, or SES error(s) not
                                               detected on network

   LCL           Amber       On             DSU/CSU is running a local
                                                  loopback test

   LCL           Amber      Off             Local loopback test not in
                                                     progress

   LINE          Red         On              DSU/CSU is running a line
                                                  loopback test

   LINE          Red        Off              Line loopback test not in
                                                     progress

   PAY           Amber       On            DSU/CSU is running a payload
                                                  loopback test

   PAY           Amber      Off            Payload loopback test not in
                                                     progress

   LNK           Green       On                 No alarm declared

   LNK           Green    Blinking         DSU/CSU is transmitting a AIS
                                                   (blue) alarm
                        (on 50ms/off
                           500ms)

   LNK           Green    Blinking       DSU/CSU is transmitting a yellow
                                                      alarm
                        (on 500ms/off
                           50ms)

   LNK           Green      Off               Severe alarm declared

   SYNC          Green       On                 No alarm declared

   SYNC          Green    Blinking         DSU/CSU is transmitting a AIS
                                                   (blue) alarm
                        (on 50ms/off
                           500ms)

   SYNC          Green    Blinking       DSU/CSU is transmitting a yellow
                                                      alarm
                        (on 500ms/off
                           50ms)

   SYNC          Green      Off               Severe alarm declared

   ACT           Green       On                 RTS signal is high

   ACT           Green      Off                 RTS signal is low

   ACT           Green    Blinking         Port 1 data is being rerouted
                                                  through port 2
                        (on 500ms/off
                           500ms)

   ACT           Green    Blinking        Data routed through port 1: if
                                           main port fails, data will be
                        (on 50ms/off         rerouted through port 2
                           500ms)

   BDL           Red         On                DSU/CSU is running a
                                           bi-directional loopback test

   BDL           Red        Off          Bi-directional loopback test not
                                                   in progress

   PWR           Green       On                    Power is on

   PWR           Green      Off                    Power is off

  Note Top row of LEDs indicate main port status. Bottom row of LEDs
  indicate auxiliary port status