Next generation service creation using XML scripting languages

Abstract

Abstract-The next generation of scripting languages for creating value-added services in converged networks will be based upon XML. Industry fora like Parlay, JAIN and OSA have developed open standard Application Programming Interfaces (APIs) to enable service creation in converged Next Generation Networks (NGN). While services can be developed in traditional programming languages (e.g. Java or C++) using these APIs, XML-based scripting languages offer some advantages. While not as flexible or powerful as a programming language, scripting languages are typically easier to learn, and are language and platform independent.In this paper we describe the architecture and framework (creation, deployment and execution) of XML-based service scripts in NGN. We focus on the Service Control Markup Language (SCML) being developed by the JAIN forum for call control scripts that is closely tied to the JAIN Java Call Control (JCC) API. SCML is intended to be part of a family of NGN service scripting languages that include facilities for user interaction, mobility, and other open NGN API functions. We compare SCML to the Call Processing Language (CPL) defined by the IETF and note that SCML offers several advantages. We also briefly compare it to the requirements that are being developed by the W3C Voice Browser working group.

TeamCom: A Service Creation Platform for Next Generation Networks

“…Call Processing Language) [18] [19] or they were withdrawn (e.g. Service Control Markup Language) [20].…”

Communication Web Services and JAIN-SLEE Integration Challenges

“…Telecom domain offers several service description languages, but they have been designed for domain specific applications and protocols (Licciardi, 2003); many languages have been proposed to enable service programming on telecom networks, namely: Call Processing Language (CPL) (Rosenberg, 1999), Service Creation Markup Language (SCML) (Bakker, 2002), Language for End System Services in Internet Telephony (LESS) (Wu, 2003), CCXML (CCXML, 2007), Session Processing Language (SPL) (Burgy, 2006), XTML (eXtensible Telephone Markup Language) (Pactolus, 2001). The expressiveness of LESS and CPL have been intentionally limited to make them accessible to end-users without programming expertise, while SCML and CCXML require more technical knowledge and thus they target expert users.…”

A Mark-Up Approach to Service Creation

“…3 The application requests information about user location. 4 The LocationProcessor sends a request for positioning to the user location service. 5 The user location service provides requested information.…”

“…While those APIs can be implemented by programming languages, such as C++ and Java, eXtensible Markup Language (XML)-based languages possess many attractive features making them applicable to NGN service creation [4,5]. XML and its derivates found their way into almost every facet of telecommunications from service provisioning through billing records and network management systems and even scripting languages for automated voice services.…”