ETSI - TS 122 127
Universal Mobile Telecommunications System (UMTS); Service Requirements for the Open Services Access (OSA); Stage 1
|Publication Date:||1 December 2001|
This document specifies the stage 1 requirements for realisation of an Open Service Access (OSA).
OSA enables applications to make use of network functionality through an open standardised interface (the OSA API). OSA provides the glue between applications and network functionality. In this way applications implementing the services become independent from the underlying network technology.
Applications which make use of network functionality offered through the OSA interface are not standardised by 3GPP.
OSA is one toolkit, amongst others, that enables certain aspects of the requirements of the Virtual Home Environment (VHE) concept to be realised.
This document is only applicable to OSA release 4. In Release 99 Service requirements are described in the VHE stage 1 description .