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Summa

Consume Summa API (v.0.1.7)

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Overview

The node named "Summa" is designed to interact with the Summa API (version indicated dynamically). It supports multiple resources and operations, including the "Send Protocol" resource with the "Send Cancel Location VLR" operation. This particular operation likely sends a cancellation request related to a mobile subscriber's location in a Visitor Location Register (VLR), which is part of mobile network infrastructure.

Typical use cases include telecom operators or service providers who need to programmatically manage subscriber sessions or cancel location registrations in their network systems. For example, when a subscriber deregisters or moves out of a service area, this node can send a cancellation message to update the network state accordingly.

Properties

Name Meaning
Imsi The International Mobile Subscriber Identity (IMSI) of the subscriber to cancel location for.
Serving Node Identifier of the serving node (e.g., VLR or MSC) where the subscriber is currently registered.
Cancellation Type Type of cancellation to perform; specific options are not listed but typically indicate the reason or method of cancellation.

Output

The node outputs JSON data representing the response from the Summa API after executing the requested operation. This output typically includes confirmation of the cancellation request, status codes, messages, or any error details returned by the API.

If the node supports binary data output, it would represent raw protocol messages or logs, but based on the provided code and properties, the primary output is structured JSON data reflecting the API response.

Dependencies

  • Requires an API key credential for authenticating with the Summa API.
  • Uses internal helper classes for HTTP requests, state management, and operation resolution.
  • The node depends on the @digital-boss/n8n-designpatterns package for operation execution patterns.
  • Proper configuration of the Summa API credentials within n8n is necessary.

Troubleshooting

  • Common Issues:

    • Invalid or missing IMSI or Serving Node values will likely cause the API call to fail.
    • Incorrect cancellation type may result in rejection or errors from the API.
    • Network connectivity issues or invalid API credentials will prevent successful communication.
  • Error Messages:

    • Authentication failures usually indicate incorrect or expired API keys.
    • Validation errors from the API might mention missing or malformed parameters like IMSI or Serving Node.
    • Timeout or connection errors suggest network problems or misconfigured endpoints.
  • Resolutions:

    • Verify all required input fields are correctly filled.
    • Ensure the API key credential is valid and has proper permissions.
    • Check network access and endpoint URLs configured in the credential settings.

Links and References

  • Summa API official documentation (not provided here, but recommended to consult for detailed parameter options and response formats).
  • n8n documentation on creating and using custom nodes.
  • Telecom standards references for VLR and cancellation procedures (for deeper understanding of the domain context).

Discussion