ADTRAN

TSU LT

Card Type                 T1 CSU/DSU
Chip Set                  Unidentified
I/O Options               V.35 DTE port, test jack - in, test jack - out,
                          test jack - monitor ,

                          RJ-48 control ports (2), T1 network interface via
                          RJ-48, power
T1 Data Rate              1.544Mbps
Line Coding               AMI, B8ZS
Framing                   D4, ESF
Data Bus                  External

[Image]

                                CONNECTIONS

         Function             Label            Function            Label

  T1 network port (RJ-48)      CN1     Control port - chain out     CN6
                                       (RJ-48)

  Test jack - in               CN2     V.35 DTE port                CN7

  Test jack - out              CN3     Power                        CN8

  Test jack - monitor          CN4     Power switch                 SW1

  Control port - chain in      CN5
  (RJ-48)

                             DIAGNOSTIC LED(S)

  LED         Color         Status                 Condition

  PWR      Unidentified       On                  Power is on

  PWR      Unidentified       Off                Power is off

  ERR      Unidentified       On      Error has been detected on network

  ERR      Unidentified       Off        Error has not been detected on
                                                    network

  ALM      Unidentified       On            Open loop, loss of frame
                                       synchronization, dial backup mode,
                                        or problem with dial backup line
                                      alarm condition detected on network

  ALM      Unidentified       Off           Open loop, loss of frame
                                       synchronization, dial backup mode,
                                        or problem with dial backup line
                                        alarm condition not detected on
                                                    network

  TST      Unidentified       On          Device is conducting a test

  TST      Unidentified       Off       Device is not conducting a test

   TD      Unidentified       On      Data is being transmitting from DTE

   TD      Unidentified       Off     Data is not being transmitting from
                                                      DTE

   RD      Unidentified       On      Data is being received from network

   RD      Unidentified       Off       Data is not being received from
                                                    network

   RS      Unidentified       On                RTS signal high

   RS      Unidentified       Off               RTS signal low

   CS      Unidentified       On                CTS signal high

   CS      Unidentified       Off               CTS signal low