Skinshells Puts Voice Infrastructure in Four Separate Shells

Field notes

The homepage organizes its offering around four independently described layers rather than one undifferentiated phone system. Connectivity covers authorization, transport, selection, and containment; control covers registration, routing, retention, and replication; numbering covers eligibility and outbound authority; and operation covers request, review, application, and verification. The page also gives each layer a concrete failure boundary, from one affected site to a rollback position established before a change is applied.