ADTRAN

TSU ESP

Card Type                 T1 DSU/CSU with Embedded SNMP
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

                          LAN interface module, DBU interface module
T1 Data Rate              1.544Mbps
ISDN Rate                 128Kbps
Line Coding               AMI, B8ZS
Framing                   D4, ESF
Data Bus                  External

[Image]

                                CONNECTIONS

         Function            Label            Function            Label

  25-pin DBU interface        CN1       Control port - chain       CN7
                                        in (RJ-48)

  10 BaseT interface          CN2       Control port - chain       CN8
  (RJ-45)                               out (RJ-48)

  T1 network port (RJ-48)     CN3       V.35 DTE port              CN9

  Test jack - in              CN4       Power                     CN10

  Test jack - out             CN5       Power switch               SW1

  Test jack - monitor         CN6

  Note:

  The DBU interface module (CN1) may feature a switched 56K interface,
  V.34 interface, or ISDN interface. The optional LAN interface module
  (CN2) provides a 10BaseT Ethernet connection

                             DIAGNOSTIC LED(S)

  LED         Color         Status                 Condition

   RS      Unidentified       On                RTS signal high

   RS      Unidentified       Off               RTS signal low

   CS      Unidentified       On                CTS signal high

   CS      Unidentified       Off               CTS signal low

   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

  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