SM-SR (Subscription Manager Secure Routing)

Also known as: Subscription Manager Secure Routing

SM-SR is the server in the GSMA M2M RSP (SGP.02) architecture that securely routes management commands to eUICCs in the field, enabling profile enable, disable, delete and audit over SMS, HTTPS or CAT_TP. It complements the SM-DP that prepares the profile, and it is the M2M counterpart to the consumer SM-DP+ push model.

Categories: Protocols and StandardsInternet and RoutingIoT

SM-SR in context

Telecom security is written into standards from 3GPP, GSMA, ETSI, IETF and ITU-T. Understanding which body owns which specification, and how they interlock, is essential for both design and audit work.

Telecom networks depend on Internet-style routing (BGP, DNS, MPLS) for interconnect. Route hijacks and DNS abuse can degrade or intercept signaling, which is why RPKI and DNSSEC are now standard hardening for carrier networks.

To place SM-SR in the wider telecom-security picture, review 3G, 3GPP, A5/1, BGP, Demarcation Point (Demarc) and Digital Signature — each entry cross-references back to this page so you can walk the topic in either direction.

Related terms

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