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Diameter Stack
Diameter Stack is an implementation of "Diameter Base Protocol" IETF RFC 3588. Diameter Base Protcoal Stack supports Message Parsing, Message Validation, TCP Transport, Failover & Failback, Message Routing to registered Applications, Diameter Sessions Management
Further details can be found here...
Home Subscriber Server
Home Subsciber Server is 3GPP defined Centralized subscriber management Server and a database. It supports two 3GPP based diameter interfaces called Cx/Dx interface and Sh Interface,
Further details can be found here...
Online Charging System
Online Charging System is used for charging the user for the services in real time . Online Charging Server is a Diameter based server that implements IETF Diameter Credit Control Application [RFC 4006] tailored to 3GPP needs.
Further details can be found here...
Offline Charging System
Diameter Offline Charging Server is used for charging the services in non-real time fashion. Diameter Offline charging Server implements Diameter Accounting Application [RFC 3588].
Further details can be found here...
Media Server
Media Server is an impelmentation of 3GPP defined Media Functons MRFC & MRFP. Media server supports SIP and MSCML based interface with Application Server(s) and RTP based interface with Endpoints.
Further details can be found here...
Operation, Administration, Maintenance & Provisioning (OAM&P) System
OAM&P System is implementaion of 3GPP specification for Operations , Administration , Maintainence and Provisioning, OAM&P is not full implementation of the said standard.the current release only implements the Element Management Funcationality.
Further details can be found here...