Terminal Setup


You will need the following items:

  • ATT 605, 700, or 705 terminal
  • cable, ATT P/N W436 (or any compatible cable)
  • terminal connector, ATT P/N 846337566 (male) or ATT P/N 846337574 (female - will need gender changer)
  • In order to attach the new terminal to your 3B2 system, you must first know which port you are going to connect the terminal to. To accomplish this, you need to:

  • Visually check the rear of the 3B2 to see what port is available (See diagram for numbering scheme).
  • Find matching entry in the /etc/inittab file and verify it is available:
  • Login to system as root
  • Type "pg /etc/inittab" and search for the line with the corresponding tty port.
  • Follow this example to connect the new terminal:
  •  

    Terminal Setup Example


    For this example, we will use port 41 (tty41). Rather than use the ATT cable, you may substitute any type (8 wire w/ RJ45 connector) of cable that will work with the 3B2. However, the individual wires inside the connector must appear to be continous when connectors are held end-to-end (ie: the colors must match).

    Step 1: Connecting Components

    1. Connect the cable into tty41 (see diagram).
    2. Connect the other end of the cable into the term connector.
    3. Attach the term connector into the correct terminal port:
    4. ATT 700 - P2 DTE (middle port)
    5. ATT 705 - SES 1-EIA (right most port)

    Step 2: Configuring The /etc/inittab File

    Note: You will need experience in editting system files to perform this step. You will need to edit the file using your favorite editor, such as vi.

    1. Login to the 3B2 as root.
    2. Type vi /etc/inittab (see partial sample file).
    3. Search for the line that has tty41 in it.
    4. Set this port to "respawn".
    5. Save and exit editor.
    6. Type init q.

    At this point, your terminal should now be functional. If you do not get a login prompt, following the Terminal Troubleshooting Procedures below:

    Terminal Troubleshooting Procedures

    1. Verify that there is power to the terminal.
    2. Check to see that your terminal communications settings are correct:
    3. ATT 700 Terminal
    4. ATT 705 Terminal
    5. Check to see that your tty port communications settings are correct:
    6. From another terminal, login as root.
    7. Type stty (Sub your port number for 41).
    8. The output should look something like:

      speed 9600 baud; -parity hupcl
      eof = ^a; swtch = ^`;
      -inpck -istrip -ixon onlcr
      -isig -icanon -echo -echoe -echok

    9. The baud rate should be set at 9600. If not, set the baud rate on the port by doing the following:
    10. Type stty 9600 (Sub your port number for 41).
    11. Verify that the assigned port has actually been turned "on".
    12. Verify that your cable is good:
    13. Do this by switching out cable with one that you know is good.
    14. Verify that your connector is good:
    15. Do this by switching out connector with one that you know is good.
    ATT 700 Terminal Communications Setup

    ATT 700


    1. On your terminal, press [Ctrl-F1].
    2. Press your down-arrow key until you get to the "Communications Options" option.
    3. Press [Enter].
    4. Change your options to match those below.

    Main/Port 2
    9600 Speed
    1 bit Stop Bits
    7 bits Data Bits
    space Send Parity
    no Check Parity
    off Local Echo
    XON/XOFF Generate Flow
    none Receive Flow
    no Answerback on Connect
    yes Clear Communications Ports
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