The Open Service Access or OSA is part of the third generation mobile
telecommunications
Telecommunication is the transmission of information by various types of technologies over wire, radio, optical, or other electromagnetic systems. It has its origin in the desire of humans for communication over a distance greater than that fe ...
network or
UMTS
The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the In ...
. OSA describes how
services
Service may refer to:
Activities
* Administrative service, a required part of the workload of university faculty
* Civil service, the body of employees of a government
* Community service, volunteer service for the benefit of a community or a p ...
are designed in a UMTS network.
The standards for OSA are being developed as part of the 3rd Generation Partnership Project (
3GPP). The standards for OSA are published by
ETSI and 3GPP.
The API for OSA is called
Parlay, (or Parlay/OSA or OSA/Parlay) as the APIs are developed jointly in collaboration by 3GPP, ETSI, and the Parlay Group. These APIs can be freely downloaded from the web. Sometimes OSA would be misspelled as Open Services ''Architecture'' or even confused with
Open systems architecture
Open systems architecture is a system design approach which aims to produce systems that are inherently interoperable and connectable without recourse to retrofit and redesign.
Concept
Systems design is a process of defining and engineering the ...
.
See also
*
Parlay Group
*
CAMEL
*
IP Multimedia Subsystem
*
Multitier architecture
In software engineering, multitier architecture (often referred to as ''n''-tier architecture) is a client–server architecture in which presentation, application processing and data management functions are physically separated. The most wide ...
*
Service layer
In intelligent networks (IN) and cellular networks, service layer is a conceptual layer within a network service provider architecture. It aims at providing middleware that serves third-party value-added services and applications at a higher a ...
External links
Download APIsThe joint 3GPP/ETSI/Parlay work group
UMTS
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