Parlay X

Abstract: Software applications are provided access to web services, such as Parlay X web services, by providing a Parlay gateway (PG) permitting access to web services and including a Parlay framework (FW). A set of modules (PX WS) comprising service interfaces for the software applications is provided, the modules (PX WS) in the set acting as proxies in order to perform requests for access to web services on the framework (FW) of the Parlay gateway on behalf of the software applications.

Abstract: With the broadcasting and network convergences, IPTV which is a broadcasting service using IP network, becomes popular as a new business model. The IPTV service supports the user-interactive and personalized broadcasting service. However, it is difficult to serve the IPTV services to the universal user terminals in the heterogeneous network environment. In this paper, we study the service scenarios for the personalized broadcasting services under open network environments and extend the Parlay X Web service structure for the personalized EPG, NDR and target advertisement services from the service scenarios. For these three services, we specify open APIs based on Parlay X for open network environments. Based on these open network environments for the personalized broadcasting services, it is possible to provide new business model to the network operators, to reduce the duplicable investment in new business by defining the roles of each service provider and to develop the various and inventive services through the third party application service. We also implement the prototype system for open APIs based on the extended Parlay X Web service structure which are named personalized EPG, NDR and target advertisement.

Abstract: The Parlay X specification describes a number of Web Services that will provide a simple interface to telephony and other systems. Other telephony interface initiatives have addressed the needs of complex and niche applications. The Parlay X initiative has set out to address the needs of the wider population of application developers. These application developers should be able to create telephony applications with little or no knowledge of the underlying network. Version 1 of the specification is complete and should be released to the public in the near future. This version covers third-party call control, SMS, multimedia messaging, payment, account management, user status and user location. This paper discusses the motivation for these new initiatives and presents an overview of the specifications and also gives an insight into the implementations available.

Abstract: As the IMS provides session establishment, QoS parameter negotiation, authentication and accounting it is an overlay architecture well qualified for session signaling concerning IPTV scenarios. The management of the signaling can be integrated as an application into an IPTV Application Server. The IPTV AS is further responsible for all necessary media signaling towards a proper IPTV media server. Such a media server is similar to the ordinary media server known from the voice centric IMS but additionally provides uni-cast, multicast and broadcast delivery of TV content which is placed by content providers. The media signaling requires a dedicated session description and can be provided by SIP or RTSP. The signaling between user and media server is orchestrated by a service-oriented-archietctue with a session manager acting as middleware. This middleware also provides interfaces for web services triggering IPTV session establishment via Parlay X gateway. This paper proposes a general IMS-based framework for delivering Live TV services over several access networks and presents the corresponding signaling flows for content enquiring and content switching as well as related delays. It furter presents an approach for using SIP and RTSP in cooperation for realizing VOD scenarios.