Faculty of Engineering and Built Enviroment
School of Electrical and Information Engineering
0314356t
morayus@engineer.com / A teleworking service allows people to work effectively together from home or other approved
locations away from the regular work site, on an established work schedule. This is
made possible via the use of Information and Communications Technology (ICT). Presently,
there are isolated applications that can assist teleworkers, such as e-mail and video conferencing,
which were developed for use over the Internet. But the Internet is a best-effort
network with no guarantee of Quality of service (QoS), low security and no standard billing
system. The design of this teleworking service involves the integration of many existing services
like e-mail, messaging, video conferencing, shared whiteboard and database access.
Other requirements are for service providers interworking for service and resource usage,
security, and QoS specification. Hence, we explore the emerging open service concept to
create this integrated teleworking service that can be made available for subscription by
corporate bodies and individuals.
Service federation is the interaction between teleworkers across service provider domains.
It is achieved via the interworking of providers’ services, and is an essential aspect of teleworking.
We have realised a service federation in a secure and seamless manner in the OSA
/ Parlay environment via the use of the OSA / Parlay framework. We looked at the use of a
framework federation for the actual implementation of service federation. This framework
federation is an interworking of frameworks based on an agreed-upon federation contract
between them. New framework interfaces were introduced to facilitate this proposed solution,
as the OSA / Parlay specifications do not yet support this approach.
Service composition is the creation of a new service instance by composing one or more
other services. We implemented this via the use of framework and trader federation. The
trader federation was used to locate services or users in different ASP domains. A high
level design of the teleworking service was done with federation explored for actual implementation.
The Common Object Request Broker Architecture (CORBA) trading service
was used to prove the concept. The RM-ODP methodology is followed in this teleworking
service design. The OSA / Parlay terminal capability, generic call control, multiparty and
location and Service Capability Features (SCF) were used for implementing in the CORBA
Distributed Processing Environment (DPE).
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:wits/oai:wiredspace.wits.ac.za:10539/1776 |
| Date | 16 November 2006 |
| Creators | Amilcar, Akin-Ojo |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | 477589 bytes, application/pdf, application/pdf |
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