RNSAP (Radio Network Subsystem Application Part) is the signalling protocol responsible for communications between RNCs in a UMTS network.It is carried on the Iur interface. This protocol provides functionality needed for soft handoverss and offers support for SRNC relocation.
The RNSAP Asn1API is compliant with :
The latest standards definition can be obtained at http://www.3gpp.org/ftp/Specs/latest.