58 research outputs found
VoIP: Making Secure Calls and Maintaining High Call Quality
No full textModern multimedia communication tools must have high security, high availability and high quality of service (QoS). Any security implementation will directly impact on QoS. This paper will investigate how end-to-end security impacts on QoS in Voice over Internet Protocol (VoIP). The QoS is measured in terms of lost packet ratio, latency and jitter using different encryption algorithms, no security and just the use of IP firewalls in Local and Wide Area Networks (LAN and WAN). The results of laboratory tests indicate that the impact on the overall performance of VoIP depends upon the bandwidth availability and encryption algorithm used. The implementation of any encryption algorithm in low bandwidth environments degrades the voice quality due to increased loss packets and packet latency, but as bandwidth increases encrypted VoIP calls provided better service compared to an unsecured environment.Les eines modernes de comunicació multimèdia han de tenir alta seguretat, alta disponibilitat i alta qualitat de servei (QoS). Cap tipus d¿implementació de seguretat tindrà un impacte directe en la qualitat de servei. En aquest article s¿investiga com la seguretat d'extrem a extrem impacta en la qualitat de servei de veu sobre el Protocol d'Internet (VoIP). La qualitat de servei es mesura en termes de pèrdua de proporció de paquets, latència i jitter utilitzant diferents algoritmes d¿encriptació, sense seguretat i només amb l'ús de tallafocs IP en local i en xarxes d'àrea àmplia (LAN i WAN). Els resultats de les proves de laboratori indiquen que l'impacte general sobre el rendiment de VoIP depèn de la disponibilitat d'ample de banda i l'algorisme de xifrat que s'utilitza. La implementació de qualsevol algorisme de xifrat en entorns de baix ample de banda degrada la veu a causa de l'augment de la pèrdua de paquets i latència dels paquets de qualitat, però quan l'ample de banda augmenta les trucades de VoIP xifrades proporcionen un millor servei en comparació amb un entorn sense seguretat.Las herramientas modernas de comunicación multimedia deben tener alta seguridad, alta disponibilidad y alta calidad de servicio (QoS). Ningún tipo de implementación de seguridad tendrá un impacto directo en la calidad de servicio. En este artículo se investiga como la seguridad de extremo a extremo impacta en la calidad de servicio de voz sobre el Protocolo de Internet (VoIP). La calidad de servicio se mide en términos de pérdida de proporción de paquetes, latencia y jitter utilizando diferentes algoritmos de encriptación, sin seguridad y sólo con el uso de cortafuegos IP en local y en redes de área amplia (LAN y WAN). Los resultados de las pruebas de laboratorio indican que el impacto general sobre el rendimiento de VoIP depende de la disponibilidad de ancho de banda y el algoritmo de cifrado que se utiliza. La implementación de cualquier algoritmo de cifrado en entornos de bajo ancho de banda degrada la voz debido al aumento de la pérdida de paquetes y latencia de los paquetes de calidad, pero cuando el ancho de banda aumenta las llamadas de VoIP cifradas proporcionan un mejor servicio en comparación con un entorno sin seguridad
The Critical Success Factors for Implementation of CRM and Knowledge Management in a Work Setting
No full textCustomer Relationship Management is the most vigorous tools in our era and is the integration of trust, business and technology to gratify the requirements of the clients. CRM is a strategy of dealing with people, technology and process and need to be implemented precisely. CRM is the most outstanding business strategy that consolidates internal procedures and externals to generate and convey value to the spotted customers and CRM can easily neutralize competitive perils, provide a good source of roadmap for the company and customers. Moreover it may clarify the potential pitfalls in creating success for the company.CRM involves validating and evaluating critical success factors, which cover the three perspectives of CRM as the theoretical base, and which constitute a guide for companies in the implementation of the applications. Due to this, the desired benefits have intensified customer satisfaction and maintenance, by generating personalized products and value-added services. In this paper, the author investigates the factors that can positively leverage the implementation and use of CRM and creates differentiation among these factors and knowledge management factors. What is more, the paper aims at determining technical feature between CRM and knowledge management and managed to compare KM with CRM successfully
Environmental Sustainability and Improved Quality of Life Through Service Convergence Technologies
No full textThis paper proposes the use of a wireless sensor network system as applied in a Smart Mining Camp to remotely control amenity functions and reduce energy consumption / emissions. Furthermore, we investigate such environmental sustainability and improved quality of life aspects through the use of multimedia convergence technologies
Impact of Encryption on Qos in Voip
No full textThis paper studies the impact of different encryption algorithms on the quality of Voice over Internet Protocol (VoIP). Assuring Quality of Service (QoS) is one of the primary issues in any IP based application that examines the voice quality of VoIP. This paper examines QoS in terms of lost packet ratio, latency and jitter using different encryption algorithms along with firewalling at the IP layer. The results of laboratory tests indicate that the impact on the overall performance of VoIP depends upon the bandwidth available and encryption used. Findings include the need for the provision of bandwidth for encryption, and even when adequate bandwidth is provided encryption algorithms can increase lost packet ratios and packet latency, and reduce.Overall, the results indicate the implementation of encryption algorithms may degrade the voice quality even if bandwidth is adequate
Intelligent wireless manufacturing IT methodologies and technologies
No full textThe Australian mining industry has introduced a new set of requirements on the construction industry in the fabrication and assembly of temporary dwellings for employees in rural areas. However, requirements such as rapid multi-site development, late customization, transportation and finalassembly within very strict deadlines have resulted in many project failures and lost revenue. This paper outlines some proposals for the mining and construction industries that are seeking to develop new modes of operation which promote; multisite development, track and trace visibility of manufacturingoperations and their supply-chain
Factors Involved in Estimating Cost of Email Spam
No full textThis paper analyses existing research work to identify all possible factors involved in estimating cost of spam. Main motivation of this paper is to provide unbiased spam costs estimation. For that, we first study the email spam lifecycle and identify all possible stakeholders. We then categorise cost and study the impact on each stakeholder. This initial study will form the backbone of the real time spam cost calculating engine that we are developing for Australia
Re-configurable VoiP interactive response
No full textOrganizational alliances are rapidly being formed as a means for effective cooperation with a common goal within a targeted value chain. The combination of such communication, coordination and cooperation leads to new organisational forms and scenarios within the Digital Ecosystem space that require technological support. Convergence refers to the move towards concurrently coupled telecommunications services with enterprise and internet data.Voice over Internet Protocol (VoIP) is a telecommunications solution that uses a data network such as the internet to transport voice traffic. VoIP data is transported alongside other data over an existing network. VoIP has introduced significant cost savings, functionality and convenience that is functionally comparable to traditional telecommunication offerings. However, current IT&T solutions have failed to use this powerful technology beyond simple telephony applicattoos.This paper presents a flexible VoIP Interactive Voice Response (IVR) interface that offers simplified convergence of telecommunications services that are coupled with enterprise and internet data
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