Plain-language definition
The real-time balance and charging engine for prepaid services.
Technical definition
The OCS reserves and debits credit over Diameter Gy and Ro; CAMEL gateways and IMS elements query it in real time. Guardivia provides the interfaces and DRA, not the OCS.
Why it matters
Prepaid control depends on OCS integration.
Last reviewed 2026-09-12 by the Guardivia QoS Engineering Team. Product facts on this page describe current capabilities; items marked “where supported”, “optional”, “integration” or “consultancy” are confirmed per deployment.