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Summa

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Overview

The "Summa" node integrates with the Summa API to perform various operations on different resources related to telecommunications subscriptions and services. Specifically, for the HLR Subscription resource with the Add Camel Service operation, this node allows users to add a CAMEL (Customized Applications for Mobile network Enhanced Logic) service to a subscriber's HLR (Home Location Register) profile.

This is useful in scenarios where telecom operators or service providers need to programmatically manage subscriber services, such as enabling value-added services or custom call handling features that rely on CAMEL protocols.

Practical example:
A telecom operator wants to enable a specific CAMEL service template for a subscriber identified by their IMSI (International Mobile Subscriber Identity). Using this node, they can specify the subscriber's IMSI, select the appropriate CAMEL service type, and apply a predefined service template to update the subscriber's HLR record accordingly.

Properties

Name Meaning
Imsi The International Mobile Subscriber Identity of the subscriber to whom the CAMEL service will be added. This uniquely identifies the mobile subscriber.
Template Name The name of the CAMEL service template to apply. This defines the configuration or parameters of the CAMEL service being added.
Camel Service Type The type/category of the CAMEL service to add. This specifies which CAMEL service variant or feature is being enabled.

Output

The node outputs JSON data representing the result of the Add Camel Service operation. This typically includes confirmation of the successful addition of the CAMEL service, any relevant identifiers, status messages, or error details if the operation failed.

If the operation involves binary data (not indicated here), it would represent associated files or payloads related to the CAMEL service configuration, but based on the provided code and properties, output is expected to be purely JSON.

Dependencies

  • Requires an active connection to the Summa API via an API key credential.
  • The node depends on the summaApi credential configured in n8n for authentication.
  • Internally uses HTTP client utilities to communicate with the Summa backend.
  • No additional external dependencies are indicated beyond the Summa API service.

Troubleshooting

  • Common issues:

    • Invalid or missing IMSI: The operation requires a valid IMSI; ensure the IMSI is correctly formatted and corresponds to an existing subscriber.
    • Incorrect template name or CAMEL service type: These must match predefined templates and service types recognized by the Summa API.
    • Authentication failures: Ensure the API key credential is valid and has sufficient permissions.
    • Network or connectivity errors when calling the Summa API.

  • Error messages:

    • Authentication errors usually indicate invalid credentials; reconfigure the API key.
    • Validation errors from the API may indicate incorrect property values; verify IMSI, template name, and service type.
    • Timeout or network errors suggest connectivity issues; check network settings and API endpoint availability.

Links and References

  • CAMEL Service Overview – Background on CAMEL services in mobile networks.
  • Summa API documentation (internal or provided by your organization) for detailed API endpoints and templates.
  • n8n documentation on creating and using credentials for API authentication setup.

Discussion