TISPAN – Telecommunications and Internet converged Services and Protocols for Advanced Networks
TISPAN is an ETSI (European Telecommunications Standards Institute) initiative which is tasked with developing standards for next generation telecommunications networks, particularly with respect to fixed line IP based access networks. As such, TISPAN employs the 3GPP IMS (IP Multimedia Subsystem) core architecture and a fixed line IP-CAN (with DSL the prime example). Key functions of the TISPAN architecture include the RACS (Resource and Admission Control Subsystem) and NASS (Network Attachment Sub System).
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