Vincent Declercq

MSIT 526: Dr. Rebman

Fall 2005

Business Data Communications and Computer Networks

RESEARCH OUTLINE

• Definition
  • PSTN and Internet telephony
  • Communication services : Voice, facsimile, Voice-message applications
  • Steps involved in originating an Internet telephone call
    • conversion of the analog voice signal to digital format
    • compression/translation of the signal into Internet protocol (IP) packets for transmission over the Internet
    • process is reversed at the receiving end.

• Overview
  • Rapid overview of Internet Telephony
  • Market forces
  • Benefits to users
  • Hurdles to overcome

• Introduction
  • History
  • Intranet Telephony

• Standards
  • Bandwidth limitations with ATM
  • Audio codec format
  • Transport protocols
  • Directory services

• Technical Barriers
  • Reliability / Sound quality
  • Bandwidth / Compression technology
  • Packet loss
  • Lack of standard protocols

• Actual use of VoIP
  • VoIP companies
  • Available material

• Future of VoIP
  • Corporate intranets
  • Commercial extranets
  • VoIP gateway
  • Videoconferencing, etc…