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What is Subscription Management Secure Routing?

Introduction

Subscription Management Secure Routing (SM-SR) is an important component in the remote management of eSIMs (embedded SIMs) in IoT devices. As more devices become connected, the ability to provision and manage them over-the-air, without physical access, is critical.

What is SM-SR

What is SM-SR

SM-SR provides a secure communications channel between eSIMs and the subscription management platforms that provision them. Specifically, SM-SR routes encrypted profile data and remote commands between the Subscription Manager Data Preparation (SM-DP) server and eSIMs.

The SM-SR works according to predefined business rules and policies to determine which operator credentials are installed on a device. It also enables profiles to be enabled, disabled, deleted, or swapped remotely during the lifetime of a device.

Benefits of Using SM-SR

Using SM-SR for eSIM management provides several key benefits:

  • Effective remote profile management – Enables over-the-air profile updates without physical access to devices
  • Network switching flexibility – Allows businesses to change operators for better coverage or rates
  • Enhanced security – Leverages encrypted channels for secure communications
  • Fallback connectivity – Ability to revert to previous network profiles if issues arise

SM-SR in Action

For example, if a business wants to switch an IoT device to a new operator profile, the SM-DP would download the new profile. Then the SM-SR would route that data to the eSIM securely and issue an activation command. This triggers the new profile while disabling the old one.

Conclusion

In summary, Subscription Management Secure Routing (SM-SR) facilitates efficient and secure eSIM profile management between servers and IoT devices remotely. It will continue to be an integral technology as more cellular-connected products are deployed globally.

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Lila Bennett

Lila Bennett, with 10+ years in eSIM tech, specializes in mobile connectivity solutions. She offers end-to-end eSIM services, from setup to support, for both businesses and consumers. Need eSIM integration or advice? Contact Lila anytime for expert assistance.