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Collaboration, Voice & AV · Advanced

Session Management Edition (SME)

A CUCM deployment used as a central SIP routing core that aggregates multiple CUCM clusters, PBXs and gateways.

Definition

SME uses the same software as CUCM but is dedicated to trunk aggregation rather than endpoint registration. Leaf clusters and third-party systems connect via SIP trunks, and SME centralizes dial plan, ILS, CAC and PSTN access. It simplifies large multicluster environments by replacing a full mesh of trunks with a hub.

Example

Fifteen regional CUCM clusters and two legacy PBXs connect to an SME cluster that routes between them.

Exam tip

SME equals a CUCM cluster used as a dial-plan hub; it is not a separate product family.

Related terms