Plain-language definition
The SS7 layer that manages dialogues between applications such as MAP and CAP.
Technical definition
TCAP provides Begin, Continue, End and Abort primitives and component handling so that MAP and CAP operations can be correlated into transactions.
Why it matters
USSD sessions and SMS operations are TCAP dialogues; correct handling is essential for stateful services.
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.