How To Fix SK559 - No response received from telephone system (timeout)

SAP Error Message - Details

• Message type: E = Error

• Message class: SK - SAPcomm messages

• Message number: 559

• Message text: No response received from telephone system (timeout)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SK559 - No response received from telephone system (timeout) ?

  The SAP error message SK559, which states "No response received from telephone system (timeout)," typically occurs in scenarios where SAP is integrated with a telephony system, such as during the use of SAP's telephony integration features (like CTI - Computer Telephony Integration). This error indicates that the SAP system did not receive a response from the connected telephone system within the expected timeframe.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the telephony system.
  Telephony System Down: The telephony system may be down or not functioning properly.
  Configuration Issues: Incorrect configuration settings in either the SAP system or the telephony system can lead to communication failures.
  Timeout Settings: The timeout settings may be too short, causing the system to time out before a response is received.
  Firewall or Security Settings: Firewalls or security settings may be blocking communication between the SAP and telephony systems.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the SAP system and the telephony system. You can use tools like ping or traceroute to diagnose network issues.
  Verify Telephony System Status: Check if the telephony system is operational. If it is down, you may need to restart it or contact the support team for the telephony system.
  Review Configuration Settings: Double-check the configuration settings in both SAP and the telephony system to ensure they are correctly set up for integration.
  Adjust Timeout Settings: If possible, increase the timeout settings in the SAP system to allow more time for a response from the telephony system.
  Check Firewall/Security Settings: Review firewall and security settings to ensure that they are not blocking the necessary ports or protocols used for communication between the systems.
  Logs and Traces: Check the logs in both SAP and the telephony system for any error messages or warnings that could provide more insight into the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific version of SAP you are using.
  Documentation: Refer to the official SAP documentation for telephony integration to ensure that all steps have been followed correctly.
  Support: If the issue persists, consider reaching out to SAP support or the support team for the telephony system for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the SK559 error in your SAP environment.