Browsing Research Papers (Computer Science) by Publication Date

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Browsing Research Papers (Computer Science) by Publication Date

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  • Tucker, William D.; Keats, Derek (Telkom, 1998)
    Grafting an ATM network onto an existing Ethernet network is a non-trivial exercise in network configuration. The process of mating ATM technology to an Ethernet network without tampering the underlying backbone and network ...
  • Paulse, Tania M.; Tucker, William D. (Telkom, 2000)
    The multi-service, multi-architecture nature of NGNs is so complex that the management of services, in addition to networks, emerges as a research challenge. Despite QoS limitations, VoIP (as opposed to VoATM), dominates ...
  • Blignaut, Rénette; Venter, Isabella M.; Cranfield, D.J. (Computer Society of South Africa, 2000)
    A computer-based training (CBT) system was used to teach Computer Literacy to full-time students at the University of the Western Cape. This approach was successful in creating computer literate students as well as creating ...
  • Naidoo, Vaughn; Tucker, William D. (Telkom, 2000)
    With QoS available on IP-dominant NGNs, Policy-based Network Management (PBNM) is an effective mechanism for managing services as opposed to actual devices. IP is ubiquitous, and any NGN must contend with legacy devices ...
  • Jeffries, Michael; Tucker, William D. (Telkom, 2000)
    Current VoIP signaling protocols are interoperable with the PSTN SS7 via H.323-to-SS7 or SIP-to-SS7 gateways. As we move toward the Next Generation Network, the PSTN falls away and we work toward carrier-grade VoIP ...
  • Jeffries, Michael; Tucker, William D. (Telkom, 2001)
    The Session Initiation Protocol and H.323 dominate the Voice over IP world. These signaling protocols are responsible for call setup and call tear down by IP telephony solutions. This project analyses and discusses the ...
  • Naidoo, Vaughn; Tucker, William D. (Telkom, 2001)
    Next Generation Networks use policy-based network management and QoS protocols to provide voice services on IP networks. Large numbers of older equipment still push IP packets. We present several solutions that include ...
  • Glaser, Meryl; Tucker, William D. (Telkom, 2001)
    A Teldem provides text-based telephony services to the deaf. Despite an array of text-based communications mechanisms on the web, the Teldem is the only means of synchronous telecommunication available to a deaf person. ...
  • Lewis, John; Tucker, William D.; Blake, Edwin H. (Telkom, 2002)
    Users and computing equipment have varying capabilities that include the abilities to exchange text and audio, engage in high bandwidth communication, etc. As the technological options increase, e ective communication ...
  • Penton, Jason; Tucker, William D.; Glaser, Meryl (Telkom, 2002)
    We have developed a prototype bridge that relays text and speech between Teldem, a text telephone for the Deaf, and a standard telephone or H.323 endpoint. Telgo323 uses modified H.323 media gateways and open source Text ...
  • Lewis, John; Tucker, William D.; Blake, Edwin H. (Telkom, 2003)
    Instant Messaging is traditionally a text only a air. However, there are instances when it would be useful to bridge to other types of media, like speech. The SoftBridge is an application framework that enables this kind ...
  • Chetty, Marshini; Tucker, William D.; Blake, Edwin H. (Telkom, 2003)
    There is a great disparity between those who have access to Information and Communication Technologies (ICTs) and those that do not. This phenomenon forms part of the Digital Divide. Many ICTs may be used to help overcome ...
  • Tucker, William D.; Glaser, Meryl; Lewis, John (Telkom, 2003)
    Following on several partial prototypes, we built an automated Deaf Telephony bridging application with the SoftBridge platform. The SoftBridge performs multi-modal bridging in real-time using Text-to-Speech (TTS) and ...
  • Benjamin, Anita; Tucker, William D. (Telkom, 2003)
    We have built a hybrid voice/text web–board that utilizes floor control for handling resources such as microphone and interface events. The aim of this research is to determine the most appropriate floor control mechanism ...
  • Adesemowo, A. Kayode; Tucker, William D. (Telkom, 2003)
    As mobile devices and networks become more data-centric, text messaging requires an extension of co-presence capabilities for better interactive discussion between input/output handicapped handheld users and their free ...
  • Adesemowo, A. Kayode; Tucker, William D. (Institute of Electrical and Electronics Engineers, Inc., 2004)
    Mobile devices and mobile networks are becoming more data-centric (evident in Japanese I-mode) even as mobile network voice Average Revenue Per User are declining, new stream of data services are required which must take ...
  • Chetty, Marshini; Tucker, William D.; Blake, Edwin H. (Telkom, 2004)
    Rural areas in South Africa have unique conditions such as remoteness and scarcity of reliable public facilities. Information and Communication Technologies (ICTs) introduced into these areas must be suitable for these ...
  • Sun, Tao; Tucker, William D. (Telkom, 2004)
    We have built a SoftBridge prototype within a JAIN (Java APIs for the Integrated Network) SLEE (Service Logic Execution Environment). A SoftBridge is a semi-synchronous multimodal IP (Internet Protocol) -based communication ...
  • Glaser, Meryl; Tucker, William D.; Mashao, Daniel (Telkom, 2004)
    Following on the development of several prototypes, we have built a semi-automated Deaf Telephony prototype on the SoftBridge platform. This prototype relays text and speech between Deaf users on the Internet and hearing ...
  • Glaser, Meryl; Tucker, William D. (2004)
    This paper presents a description of telecommunications for Deaf people in South Africa by contrasting the situation in the developed world. We explain the main motivations for providing a locally appropriate solution. ...

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