SummaInstall

Overview

The "HLR Subscription - Apply Subscription Settings" operation in this node allows users to update or apply various subscription settings for a given IMSI (International Mobile Subscriber Identity) on the Summa API platform. This is useful in telecom environments where subscriber profiles and service parameters need to be programmatically managed, such as enabling/disabling barrings, call forwarding, location privacy classes, and other telephony-related configurations.

Typical use cases include:

• Automating subscriber profile updates based on business rules.
• Bulk updating of subscription parameters during migrations or provisioning.
• Integrating telecom backend systems with external workflows for dynamic subscriber management.

For example, a user might apply a new HLR profile and set specific call barring options for a subscriber identified by their IMSI.

Properties

Output

The node outputs JSON data representing the response from the Summa API after applying the subscription settings. This typically includes confirmation of the applied settings, status messages, or error details if the operation failed.

If binary data were involved (not indicated here), it would represent files or media related to the subscription, but this operation focuses on JSON responses only.

Dependencies

• Requires an active connection to the Summa API service.
• Requires valid API authentication credentials configured in n8n (an API key or token).
• The node uses internal HTTP client utilities to communicate with the Summa backend.
• No additional environment variables are explicitly required beyond standard credential setup.

Troubleshooting

• Invalid IMSI: If the IMSI provided is incorrect or not found, the API may return an error. Verify the IMSI format and existence.
• Malformed JSON Data: When "Send Json" is true, ensure that the JSON data is well-formed and matches the expected schema; otherwise, the API will reject the request.
• Missing Required Fields: Some subscription settings may require mandatory fields; omitting them can cause errors.
• API Authentication Errors: Ensure the API credentials are correctly configured and have sufficient permissions.
• Network Issues: Connectivity problems to the Summa API endpoint will cause failures; check network and proxy settings.
• Unsupported Field Values: Providing unsupported or invalid values in additional fields may result in API validation errors.

Common error messages usually indicate which field or parameter caused the issue, helping to correct the input.

Links and References

• Summa API official documentation (refer to your organization's API docs for detailed field descriptions and examples).
• Telecom standards references for IMSI and subscription parameters.
• n8n documentation on creating and using custom nodes with API credentials.