The document provides release notes for Oracle Application Integration Architecture for Communications version 2.4. Key highlights include certifying the integration packs on the latest application releases of Siebel, BRM, and the Communications Foundation Pack. Enhancements to the integration packs focus on order to bill, agent-assisted billing care, and revenue accounting processes. New features support order to activation, collections integration between BRM and Siebel, and displaying promotions on invoices.