Netwerksignalering
Netwerksignalering, or network signaling, is the process of exchanging control information necessary to establish, manage, and terminate communications and services across a network. It is separate from the user data that makes up the actual content of calls or sessions, and it operates on a signaling plane alongside the data plane.
Signaling enables a range of functions, including session setup and teardown, resource allocation, routing decisions, authentication,
Two broad approaches characterize signaling architectures: out-of-band signaling, where control information travels on a separate channel,
Common signaling frameworks and protocols include:
- Traditional telephony: Signaling System No. 7 (SS7) with ISUP, SCCP, and MAP, often deployed with signaling
- IP-based networks: Session Initiation Protocol (SIP) for session setup, along with related protocols such as H.323
- Authentication and authorization: Diameter and RADIUS for control plane access in modern networks.
- Mobile networks: CAMEL and MAP in earlier generations, evolving toward 3GPP-defined signaling and Diameter in newer
Security and reliability are central concerns, as signaling infrastructures are targets for abuse and disruption. Measures