Asynchronous Host Sessions › Asynchronous Sessions › How You Test Asynchronous Communications › Asynchronous Communication Problems

Asynchronous Communication Problems

If CA Automation Point cannot communicate with the host, check the following items and use the status line to help you solve the problem:

• CTS signal
  • If you expect a CTS signal and you see either a minus sign (-) or an X as the third character in the display, verify that both sides of the cable are plugged securely into their respective devices. If they are, you may have a cable problem or you may need to insert a null modem into the line.

    Note: For more information, see the chapter "Establishing Host Connections."

  • If you do not expect a CTS signal and see an X as the third character, change the Clear To Send setting in the communication settings for this session to NO. You should then see a minus sign (-) where the X used to be, indicating an acceptable state.
• DSR signal
  • If you expect a DSR signal and the fourth character in the display is either an F or a question mark (?), verify that both sides of the cable are plugged securely into their respective devices. If they are, check the Clear to Send indicator:
    • If the indicator is a question mark (?), the cable is probably faulty.
    • If the indicator is a minus sign (-), try installing a null modem. You may see the CTS indicator change to an equal sign (=), indicating that the CTS signal was present but required the null modem.
  • If you do not expect a DSR signal and see a question mark (?) as the fourth character in the display, change the Data Set Ready setting in the communications settings for this session to NO. You should then see an F where the question mark used to be, indicating an acceptable state.
• Cable connection

  If you changed the values of both the Clear To Send and Data Set Ready settings to NO and you still cannot communicate with the host, try installing a null modem. If the null modem allows you to establish communication with the host, you may see the CTS and/or DSR indicators appear.

If none of the previous steps corrects the communication problem, discuss it with the communication specialist at your data center.