
CTC UNION TECHNOLOGIES CO., LTD.

ETU01/X21

Card Type                 E1 DSU
Chip Set                  Unidentified
I/O Options               AC power, E1 network interface via BNC
                          connectors (2),

                          E1 network interface via 15-pin connector,

                          E1 network interface via bantam connectors (2),
                          15-pin DTE port (X.21)
Wiring Type               RG-58A/U cable
E1 Transfer Rate          2.048Mbps
E1 Line Coding            AMI, HDB3
Frame type                CCS, CAS, CRC4
Data Bus                  External

[Image]

                                CONNECTIONS

         Function            Label             Function            Label

  AC power                    CN1     BNC connector - receive       CN5

  Bantam jack - receive       CN2     BNC connector - transmit      CN6

  Bantam jack - transmit      CN3     15 pin-network port           CN7

  15-pin DTE port             CN4     Power switch                  SW8

  Note: RS-449 interface is possible via 37-pin connector on adapter
  cable

                        USER CONFIGURABLE SETTINGS

                   Setting                      Label        Position

     Framed mode (2048Kbps)                    SW1/1           On

      Unframed mode(64Kbps x n )                SW1/1           Off

     Time slot 1 enabled                       SW1/2           On

      Time slot 1 disabled                      SW1/2           Off

     Time slot 2 enabled                       SW1/3           On

      Time slot 2 disabled                      SW1/3           Off

     Time slot 3 enabled                       SW1/4           On

      Time slot 3 disabled                      SW1/4           Off

     Time slot 4 enabled                       SW1/5           On

      Time slot 4 disabled                      SW1/5           Off

     Time slot 5 disabled                      SW1/6           Off

      Time slot 5 enabled                       SW1/6           On

     Time slot 6 disabled                      SW1/7           Off

      Time slot 6 enabled                       SW1/7           On

     Time slot 7 disabled                      SW1/8           Off

      Time slot 7 enabled                       SW1/8           On

                    USER CONFIGURABLE SETTINGS (CONT.)

   Time slot 8 disabled                           SW2/1          Off

      Time slot 8 enabled                          SW2/1          On

     Time slot 9 disabled                         SW2/2          Off

      Time slot 9 enabled                          SW2/2          On

     Time slot 10 disabled                        SW2/3          Off

      Time slot 10 enabled                         SW2/3          On

     Time slot 11 disabled                        SW2/4          Off

      Time slot 11 enabled                         SW2/4          On

     Time slot 12 disabled                        SW2/5          Off

      Time slot 12 enabled                         SW2/5          On

     Time slot 13 disabled                        SW2/6          Off

      Time slot 13 enabled                         SW2/6          On

     Time slot 14 disabled                        SW2/7          Off

      Time slot 14 enabled                         SW2/7          On

     Time slot 15 disabled                        SW2/8          Off

      Time slot 15 enabled                         SW2/8          On

     Time slot 16 disabled                        SW3/1          Off

      Time slot 16 enabled                         SW3/1          On

     Time slot 17 disabled                        SW3/2          Off

      Time slot 17 enabled                         SW3/2          On

     Time slot 18 disabled                        SW3/3          Off

      Time slot 18 enabled                         SW3/3          On

     Time slot 19 disabled                        SW3/4          Off

      Time slot 19 enabled                         SW3/4          On

     Time slot 20 disabled                        SW3/5          Off

      Time slot 20 enabled                         SW3/5          On

     Time slot 21 disabled                        SW3/6          Off

      Time slot 21 enabled                         SW3/6          On

     Time slot 22 disabled                        SW3/7          Off

      Time slot 22 enabled                         SW3/7          On

     Time slot 23 disabled                        SW3/8          Off

      Time slot 23 enabled                         SW3/8          On

     Time slot 24 disabled                        SW4/1          Off

      Time slot 24 enabled                         SW4/1          On

     Time slot 25 disabled                        SW4/2          Off

      Time slot 25 enabled                         SW4/2          On

     Time slot 26 disabled                        SW4/3          Off

      Time slot 26 enabled                         SW4/3          On

     Time slot 27 disabled                        SW4/4          Off

      Time slot 27 enabled                         SW4/4          On

     Time slot 28 disabled                        SW4/5          Off

      Time slot 28 enabled                         SW4/5          On

     Time slot 29 disabled                        SW4/6          Off

      Time slot 29 enabled                         SW4/6          On

     Time slot 30 disabled                        SW4/7          Off

      Time slot 30 enabled                         SW4/7          On

     Time slot 31 disabled                        SW4/8          Off

      Time slot 31 enabled                         SW4/8          On

                    USER CONFIGURABLE SETTINGS (CONT.)

   HDB3 line code enabled                   SW5/4            Off

      AMI line code enabled                  SW5/4             On

     CAS/PCM31 frame mode enabled           SW5/5            Off

      CAS/PCM30 frame mode enabled           SW5/5             On

     CRC4 diabled                           SW5/6            Off

      CRC4 enabled                           SW5/6             On

     Unused timslot - Flag (0x7E)           SW5/7            Off

      Unused timeslot - Mark (0xFF)          SW5/7             On

     64Kbps x n data rate enabled           SW5/8            Off

      56Kbps x n data rate enabled           SW5/8             On

     Jitter attenuator enabled              SW6/1             On

      Jitter attenuator disabled             SW6/1            Off

     Jitter on received side                SW6/2            Off

      Jitter on transmitted side             SW6/2             On

     Jitter buffer depth set at 32 bits     SW6/3            Off

      Jitter buffer depth set at 128         SW6/3             On
      bits

     Cascading function disabled            SW6/4            Off

      Cascading function enabled             SW6/4             On

     Passthrough disabled on time slot      SW6/5            Off
      16

      Passthrough enabled on time slot       SW6/5             On
      16

     Factory configured - do not alter      SW6/6        Unidentified

     Data port loopback disabled            SW6/7            Off

      Data port loopback enabled             SW6/7             On

     Front panel loopback enabled           SW6/8             On

      Front panel loopback disabled          SW6/8            Off

                                CLOCK MODE

    Mode #         E1         Data     Data Port    SW5/1   SW5/2  SW5/3
                Transmit      Port     Transmit
                            Receive

        0      Recover     Recover     Recover     Off     Off     Off
      (DCE1)

         1      Internal    Internal   Internal      On     Off     Off
      (DCE2)

         2      External    Recover    External     Off      On     Off
      (DTE1)

         3      External    External   External      On      On     Off
      (DTE2)

         4      External    External   External     Off     Off      On
      (DTE2)

                             E1 LINE IMPEDANCE

         Setting            SW7/1     SW7/2    SW7/3     SW7/4     SW7/5

      75 Ohm operation      Off       Off      Off       Off       Off

      120 Ohm operation       On       On        On       On        On

                             DIAGNOSTIC LED(S)

    LED       Color      Status                   Condition

    PWR       Green        On                    Power is on

    PWR       Green        Off                  Power is off

    TD        Yellow       On         Data is being transmitted from the
                                               data port (CN4)

    TD        Yellow     Blinking    Space is being transmitted from the
                                               data port (CN4)

    TD        Yellow       Off        Data is not being transmitted from
                                             the data port (CN4)

    RD        Yellow       On         Data is being received at the data
                                                 port (CN4)

    RD        Yellow     Blinking    Space is being received at the data
                                                 port (CN4)

    RD        Yellow       Off        Data is not being recieved at the
                                               data port (CN4)

    RTS       Yellow       On             Sending device is enabled

    RTS       Yellow       Off           Sending device is disabled

    DCD       Yellow       On               Data carrier present

    DCD       Yellow       Off       Data carrier not present. Connection
                                               not established

   CKLS        Red         On           Transmit clock loss detected

   CKLS        Red         Off        Transmit clock loss not detected

   SGLS        Red         On           Receive signal loss detected

   SGLS        Red         Off        Receive signal loss not detected

   SCLS        Red         On       Loss of received frame syncronization
                                                  detected

   SCLS        Red         Off      Loss of received frame syncronization
                                                not detected

    ALM        Red         On        Alarm condition detected on network

    ALM        Red         Off         Alarm condition not detected on
                                                   network

    ER         Red         On        Bit errors detected in the 511 test
                                                   pattern

    ER         Red         Off       Bits errors not detected in 511 test
                                                   pattern

    TST        Red         On         Device is conducting a loopback or
                                                pattern test

    TST        Red         Off       Device is not conducting a loopback
                                               or pattern test

                       MISCELLANEOUS TECHNICAL NOTES

  Timeslot switches are ignored in unframe mode. In framed mode, clock
  rate is determined by the number of timeslots enabled ( n ). In CAS
  mode, SW3/1 must be set to off position or a loopback test will occur.
  Cascading units must not be assigned identical or overlapping
  timeslots.

