No description available.

Thesis (M.S. in Computer Science)--Naval Postgraduate School, September 2003. / Thesis advisor(s): Bert Lundy, R. Scott Coté. Includes bibliographical references (p. 77-78). Also available online.

Thesis (M.S. in Information Systems and Operations)--Naval Postgraduate School, June 2003. / Thesis advisor(s): Dan C. Boger, Rex Buddenberg. Includes bibliographical references (p. 61-62). Also available online.

Thesis (M.S. in Information Technology Management)--Naval Postgraduate School, September 2002. / Thesis advisor(s):Dan Boger, Rex Buddenberg. Includes bibliographical references (p. 101-102). Also available online.

Thesis (M.S. in Computer Science)--Naval Postgraduate School, September 2005. / Thesis Advisor(s): Cynthia E. Irvine, Thuy D. Nguyen. Includes bibliographical references (p. 179-180). Also available online.

Thesis (M.S.S.I.S.)--Regis University, Denver, Colo., 2006. / Title from PDF title page (viewed on Nov. 30, 2006). Includes bibliographical references.

Voice over Internet Protocol (VoIP) is becoming popular due to its low cost and the management advantages it offers over traditional PSTN phone systems. VoIP is widely implemented with H.323 and Session Initiation Protocol (SIP) standards. However, both protocols are poorly designed for networks with common security solutions such as firewalls and Network Address Translation (NAT). This project is a feasibility study of SIP-based VoIP integration into the Monterey Security Architecture (MYSEA), a multilevel secure environment that uses NAT as a security mechanism. A gathering of comparative studies on VoIP protocols was performed to guide the selection of SIP as the test protocol. A set of experiments was devised and conducted using SIPbased softphones for this study. The insights gained from the experiment provide useful insights to the MYSEA project concerning VoIP security.

Wang Wei. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 80-83). / Abstracts in English and Chinese. / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Motivations and Contributions --- p.1 / Chapter 1.2 --- Organization of the Thesis --- p.4 / Chapter Chapter 2 --- Background --- p.6 / Chapter 2.1 --- IEEE 802.11 --- p.6 / Chapter 2.1.1 --- Distributed Coordination Function (DCF) / Point Coordination Function (PCF) --- p.7 / Chapter 2.1.2 --- Types of Networks --- p.8 / Chapter 2.1.3 --- The 802.11 MAC Sublayer Protocol --- p.9 / Chapter 2.1.4 --- Why CSMA/CA for Wireless LAN? --- p.11 / Chapter 2.2 --- Voice over IP (VoIP) --- p.13 / Chapter 2.2.1 --- Speech Codec --- p.13 / Chapter 2.2.2 --- The H.323 Standard --- p.13 / Chapter 2.3 --- Related Work --- p.15 / Chapter 2.3.1 --- Capacity limits of VoIP over WLAN --- p.16 / Chapter 2.3.2 --- Methods for increasing VoIP capacity over WLAN --- p.16 / Chapter 2.3.3 --- Interference between traffic of VoIP and other applications --- p.18 / Chapter Chapter 3 --- VoIP Multiplex-Multicast Scheme --- p.20 / Chapter 3.1 --- System Architecture --- p.20 / Chapter 3.2 --- Packet Multiplexing and Multicasting --- p.22 / Chapter 3.3 --- Header Compression --- p.24 / Chapter 3.4 --- Connection Establishment --- p.29 / Chapter Chapter 4 --- Capacity Analysis --- p.31 / Chapter 4.1 --- VoIP Capacity Analysis for 802. 11b --- p.31 / Chapter 4.1.1 --- Capacity of Ordinary VoIP over WLAN --- p.32 / Chapter 4.1.2 --- Capacity of Multiplex-Multicast Scheme over WLAN --- p.33 / Chapter 4.2 --- "VoIP Capacity Analysis for 802,11a and 802.11g" --- p.34 / Chapter 4.3 --- VoIP Capacity with VBR Sources --- p.38 / Chapter 4.4 --- Simulations --- p.38 / Chapter Chapter 5 --- Delay Performance --- p.41 / Chapter 5.1 --- Access Delay --- p.42 / Chapter 5.2 --- Extra Delay Incurred by the Multiplex-Multicast Scheme --- p.47 / Chapter Chapter 6 --- VoIP Co-existing with TCP Interference Traffic --- p.49 / Chapter 6.1 --- Ordinary VoIP co-existing with TCP over WLAN --- p.49 / Chapter 6.1.1 --- Problem Caused by TCP Interference --- p.49 / Chapter 6.1.2 --- Solutions --- p.52 / Chapter 6.2 --- M-M VoIP coexisting with TCP over WLAN --- p.53 / Chapter 6.3 --- 802.11e --- p.56 / Chapter 6.3.1 --- EDCA --- p.56 / Chapter 6.3.2 --- ACK Policies --- p.58 / Chapter 6.3.3 --- VoIP over EDCA --- p.58 / Chapter Chapter 7 --- Experimental Validation --- p.61 / Chapter 7.1 --- Transmission Errors --- p.61 / Chapter 7.2 --- Prototype Implementation --- p.62 / Chapter Chapter 8 --- VoIP over Ad Hoc Networks --- p.65 / Chapter 8.1 --- Mobile Ad Hoc Networks (MANET) and Wireless Distributed System (WDS) --- p.65 / Chapter 8.2 --- The M-M Scheme in WDS --- p.67 / Chapter 8.2.1 --- Modified System Architecture --- p.67 / Chapter 8.2.2 --- Delay Performance --- p.68 / Chapter 8.2.3 --- Analysis of M-M Scheme in WDS --- p.69 / Chapter 8.2.4 --- Capacity Improvement --- p.70 / Chapter 8.2.5 --- Delay Improvement --- p.71 / Chapter 8.2.6 --- Spectrum Reuse --- p.71 / Chapter Chapter 9 --- Conclusions --- p.76 / References --- p.80

Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2002. / Includes bibliographical references (leaves 57-59). Also available in electronic version. Access restricted to campus users.

Thesis (M.S. in Modeling, Virtual Environments and Simulation)--Naval Postgraduate School, September 2002. / Thesis advisor(s): Russell D. Shilling, Rudolph P. Darken. Includes bibliographical references (p. 175). Also available online.