Relevant bibliographies by topics / Voice over IP / Dissertations / Theses
To see the other types of publications on this topic, follow the link: Voice over IP.

Dissertations / Theses on the topic 'Voice over IP'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Voice over IP.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Derakhshanno, Homayoun. "Voice over IP over GPRS." Thesis, KTH, Kommunikationssystem, CoS, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91856.

Full text
Abstract:
The Voice over IP (VoIP) technology has become prevalent today due to its lower cost than traditional telephony and its ability to support new value-added services. Additionally, the increasing availability of wireless internet access has led to research studies examining the combination of wireless network access with voice over IP. With the widespread availability of advanced mobile phones and Pocket PCs, the need for VoIP applications on these mobile platforms is tangible. To enable this, we need to evaluate the current wireless access technologies to see if they can support the necessary t
APA, Harvard, Vancouver, ISO, and other styles
2

Brännström, Nils. "Voice-over-IP over Enhanced Uplink." Thesis, Linköping University, Department of Electrical Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-8479.

Full text
Abstract:
<p>The traditional voice service in mobile networks is an important service that mobile users expect high quality from. With the convergence of mobile networks towards an all-IP network, an IP-based speech service becomes important which is referred to as Voice-over-IP (VoIP). The traditional voice service is highly optimized and a VoIP service must therefore fulfil strict quality requirements to provide the same speech service quality. The air interface technology, WCDMA, which is used in third generation communication systems in Europe is constantly developed. An improved concept for the mob
APA, Harvard, Vancouver, ISO, and other styles
3

Fey, Marcus. "Voice over IP - Eine Einführung." Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200600094.

Full text
Abstract:
Eine kurze Einführung zu "Voice over IP" (dem Telefonieren über Datennetze). Es wird ein Überblick über technische Anforderungen und Lösungen geben. Behandelte Gebiete sind Audio-Codecs, das Transportprotokoll RTP sowie die Signalisierungsdienste SIP und H.323.
APA, Harvard, Vancouver, ISO, and other styles
4

Abad, Caballero Israel Manuel. "Secure Mobile Voice over IP." Thesis, KTH, Mikroelektronik och Informationsteknik, IMIT, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-93113.

Full text
Abstract:
Voice over IP (VoIP) can be defined as the ability to make phone calls and to send faxes (i.e., to do everything we can do today with the Public Switched Telephone Network, PSTN) over IP−based data networks with a suitable quality of service and potentially a superior cost/benefit ratio. There is a desire to provide (VoIP) with the suitable security without effecting the performance of this technology. This becomes even more important when VoIP utilizes wireless technologies as the data networks (such as Wireless Local Area Networks, WLAN), given the bandwidth and other constraints of wireless
APA, Harvard, Vancouver, ISO, and other styles
5

Smith, Paxton J. "Voice conferencing over IP networks." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29574.

Full text
Abstract:
Traditional telephone conferencing has been accomplished by way of a centralized conference bridge. An Internet Protocol (IP)-based conference bridge is subject to speech distortions and substantial computational demands due to the tandem arrangement of high compression speech codecs. Decentralized architectures avoid the speech distortions and delay, but lack strong control and have a key dependence on silence suppression for endpoint scalability. One solution is to use centralized speaker selection and forwarding, and decentralized decoding and mixing. This approach eliminates the problem of
APA, Harvard, Vancouver, ISO, and other styles
6

Knappe, Sebastian. "Marktabgrenzung im Bereich Voice over IP." Hamburg Kovač, 2009. http://d-nb.info/1001547381/04.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Sundstrom, Karin Heather. "Voice over IP, an engineering analysis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0024/MQ51804.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Franci, Alessandro. "Voice over IP e Web Conferencing." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/4464/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Moodie, Myron L., Todd A. Newton, Thomas B. Grace, and William A. Malatesta. "Performance of Voice-over-IP over iNET Telemetric Networks." International Foundation for Telemetering, 2011. http://hdl.handle.net/10150/595774.

Full text
Abstract:
ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada<br>Bidirectional networked radio frequency (RF) communications between the ground and test articles are quickly becoming a normal mode of operation. Not only can devices be remotely controlled, but other networking technologies are emerging into flight test. Voice over IP (VoIP) is ubiquitous in the workplace and in homes, but it presents unique challenges when used to communicate between test articles. This p
APA, Harvard, Vancouver, ISO, and other styles
10

Ram, Abhishek. "Assessment of Voice Over IP as a solution for Voice over ADSL." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/33135.

Full text
Abstract:
Voice over DSL (VoDSL) is a technology that enables the transport of data and multiple voice calls over a single copper-pair. VoDSL employs packet voice technology instead of the traditional circuit switched voice. Voice over ATM (VoATM) and Voice over IP (VoIP) are the two main alternatives for carrying voice packets over DSL. ATM is currently the preferred technology, since it offers the advantage of ATMâ s built-in Quality of Service (QoS) mechanisms. IP, on the other hand, cannot provide QoS guarantees in its traditional form. IP QoS mechanisms have been evolved only in the recent years.
APA, Harvard, Vancouver, ISO, and other styles
11

Yang, Xu. "On the development of Voice over IP." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2389.

Full text
APA, Harvard, Vancouver, ISO, and other styles
12

Yensen, Trevor. "Structures and interfaces for voice over IP." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0010/MQ36903.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
13

Gong, Qi Peng. "Playout buffering for conversational voice over IP." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=114224.

Full text
Abstract:
In Voice over IP, the quality of interactive conversation is important to users. Major factors affecting perceived quality are delay, delay jitter, and missing packets. For conversational VoIP, a conversational delay also plays an important role for perceived quality. Large conversational delay can result in double talk, echo or even the termination of the conversation. In practice, a playout buffer is introduced at the receiver's side to remove delay jitter, so that the voice information carried on packets can be available at regular intervals for decoding. A longer buffer reduces the possibi
APA, Harvard, Vancouver, ISO, and other styles
14

Bilien, Johan. "Key Agreement for Secure Voice over IP." Thesis, KTH, Mikroelektronik och Informationsteknik, IMIT, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-93069.

Full text
Abstract:
This thesis reviews the usual properties and requirements for key agreement protocols. It then focuses on MIKEY, a work-in-progress protocol designed to conduct key agreements for secure multimedia exchanges. The protocol was implemented and incorporated in a SIP user agent - minisip. This implementation was used to measure the additional delay required for key exchange during call establishment. Finally, some schemes are proposed regarding the use of MIKEY in advanced VoIP scenarios, such as conferences and terminal mobility.
APA, Harvard, Vancouver, ISO, and other styles
15

Iranmanesh, Seyed Amir. "Security Enhancements in Voice Over Ip Networks." W&M ScholarWorks, 2017. https://scholarworks.wm.edu/etd/1530192357.

Full text
Abstract:
Voice delivery over IP networks including VoIP (Voice over IP) and VoLTE (Voice over LTE) are emerging as the alternatives to the conventional public telephony networks. With the growing number of subscribers and the global integration of 4/5G by operations, VoIP/VoLTE as the only option for voice delivery becomes an attractive target to be abused and exploited by malicious attackers. This dissertation aims to address some of the security challenges in VoIP/VoLTE. When we examine the past events to identify trends and changes in attacking strategies, we find that spam calls, caller-ID spoof
APA, Harvard, Vancouver, ISO, and other styles
16

Theander, Petter, and Thomas Hultgren. "Voice over IP for Sony Ericsson Cellular Phones." Thesis, Blekinge Tekniska Högskola, Avdelningen för programvarusystem, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2623.

Full text
Abstract:
This report presents an investigation of the possibilities to implement voice over IP (VoIP) in Sony Ericsson cellular phones. The results from this investigation show that it is partially possible to implement such a solution. The best option for doing so is to make use of the support for the Session Initiation Protocol and the Real-time Transport Protocol offered by the architecture. Another goal is to evaluate if Bluetooth is able to handle the requirements needed for the solution. The whole concept is proven by implementing a prototype. Measurements on this prototype show that Bluetooth wi
APA, Harvard, Vancouver, ISO, and other styles
17

Nesh-Nash, Ali. "Voice over IP in a resource constrained environment." Thesis, KTH, Kommunikationssystem, CoS, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-92257.

Full text
Abstract:
Today, the telecommunication world is focused on mobility. This is popular because since the 1990s most people have integrated their mobile phones into their life. A new factor is the rise of the voice over IP(VoIP) technology, with VoIP over Wireless LANs (WLANs) as the clear next growth area for mobile communications. The purpose of this thesis was to understand how to save power based upon changing when some operations are performed in a VoIP client. In order to do this, we decided to port minisip to an HP iPAQ 5500 Personal Digital Assistant (PDA), in order to explore some of the issues of
APA, Harvard, Vancouver, ISO, and other styles
18

Elliott, Colm. "Stream synchronization for voice over IP conference bridges." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82484.

Full text
Abstract:
Potentially large network delay variability experienced by voice packets when travelling over IP networks complicates the design of a robust voice conference bridge. Intrastream synchronization is required at the conference bridge to smooth out network delay jitter on a given stream and provide a continuous stream of voice packets to the conference bridge core. Interstream synchronization is needed to provide time synchronization between packets in different streams, allowing for a mapping of selected voice streams to the conference bridge output and the creation of a periodic and synch
APA, Harvard, Vancouver, ISO, and other styles
19

Zue, Cory L. "Modeling and assessing secure Voice over IP performance." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33377.

Full text
Abstract:
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.<br>Includes bibliographical references (p. 102-106).<br>Voice over Internet Protocol (VoIP) systems enable efficient communications over data networks, but security of VoIP and the impact of that security on communications quality has not been quantitatively modeled. A conversational model is adapted for VoIP and a computational model of communication quality - the Z-Model - is developed. VolIP conversations are simulated for networks with a range of performance characteristics
APA, Harvard, Vancouver, ISO, and other styles
20

Meinberg, Ralf. "Voice over IP : IP-basierter Sprachdienst vor dem Hintergrund des novellierten TKG /." Münster : LIT-Verl, 2008. http://deposit.d-nb.de/cgi-bin/dokserv?id=3168567&prov=M&dok_var=1&dok_ext=htm.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Ebstein, Sammy-Franklin. "Voice over IP Szenarien über die Diffusion von VoIP /." St. Gallen, 2005. http://www.biblio.unisg.ch/org/biblio/edoc.nsf/wwwDisplayIdentifier/00641852001/$FILE/00641852001.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

Lloyd, Patrick. "An exploration of covert channels within voice over IP /." Online version of thesis, 2010. http://hdl.handle.net/1850/12241.

Full text
APA, Harvard, Vancouver, ISO, and other styles
23

Nakkhongkham, Saiyoot. "Measuring the quality of service of voice over IP." Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/7007.

Full text
Abstract:
This thesis addresses and proposes the methods to measure and classify problems encountered when transmitting voice over the Internet. These problems are delay, jittering, and lost of data. Transmitting voice over the Internet is commonly known as Voice over Internet Protocol (VoIP). The fact that the current Internet infrastructure was not designed to transmit real-time data makes these problems become eminent. Solutions to improve the quality of real-time data transmissions over the Internet are currently under research. This thesis presents a VoIP software-based application tool to help VoI
APA, Harvard, Vancouver, ISO, and other styles
24

Mahfuz, Ejaz. "Packet loss concealment for voice transmission over IP networks." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32965.

Full text
Abstract:
Voice-over-IP (VoIP) uses packetized transmission of speech over the Internet (IP network). However, at the receiving end, packets are missing due to network delay, network congestion (jitter) and network errors. This packet loss degrades the quality of speech at the receiving end of a voice transmission system in an IP network. Since the voice transmission is a real-time process, the receiver cannot request for retransmission of the missing packets. Concealment algorithms, either transmitter or receiver based, are used to replace these lost packets. The packet loss concealment (PLC) technique
APA, Harvard, Vancouver, ISO, and other styles
25

SANTOS, ALEXANDRE FERREIRA DOS. "ASSESSMENT OF QOS PARAMETERS IN VOICE OVER IP TRANSMISSION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2004. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=5243@1.

Full text
Abstract:
Este trabalho apresenta um estudo visando a estabelecer uma metodologia para dimensionamento de um sistema VoIP, focalizando, em particular, o dimensionamento de um multiplexador estatístico. Procuramos aplicar modelos e resultados existentes para o problema geral do multiplexador estatístico ao caso específico de um sistema VoIP, levando em conta as características do tráfego, os requisitos de QoS e os princípios das arquiteturas Intserv e Diffserv. Para isto, apresentamos um resumo da tecnologia VoIP, incluindo seus requisitos de qualidade e os protocolos apropriados para transportar
APA, Harvard, Vancouver, ISO, and other styles
26

Kannan, Steven (Steven K. ). "Secure Voice over IP conferencing with decentralized group encryption." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/45979.

Full text
Abstract:
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.<br>Includes bibliographical references (p. 107-109).<br>This thesis addresses the development of an end-to-end secure Voice over IP (VoIP) conference system. We are particularly interested in challenges associated with deploying such a system in ad-hoc networks containing low bandwidth and/or high latency data links. End-to-end security is handled by the decentralized Public Key Group Encryption library (PKGE) developed at Lincoln Laboratory; PKGE allows real-time keying of conf
APA, Harvard, Vancouver, ISO, and other styles
27

Guerra, Carlos Humberto Martins Chagas. "Gateway SIP - Asterisk." Master's thesis, Universidade de Évora, 2012. http://hdl.handle.net/10174/15430.

Full text
Abstract:
Esta tese consiste num estudo realizado sobre a tecnologia VoIP (Voice over IP) com aplicação dentro da área dos PBX(Private Branch eXchange) e Gateways VoIP Open Source. Em primeiro lugar foram abordados os conceitos, requisitos e elementos associados a esta tecnologia bem como a sua interligação com outras tecnologias de comunicação como a PSTN (Public Switched Telephone Network) , ISDN (Integrated Services Digital Network) ou GSM (Groupe Special Mobile).Al ém disso, foi efectuado um estudo teórico e prático sobre o software Open Source Asterisk, tendo com objectivo explorar o seu modo de fu
APA, Harvard, Vancouver, ISO, and other styles
28

Dely, Peter. "Adaptive Aggregation of Voice over IP in Wireless Mesh Networks." Thesis, Karlstad University, Faculty of Economic Sciences, Communication and IT, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-938.

Full text
Abstract:
<p>When using Voice over IP (VoIP) in Wireless Mesh Networks the overhead induced by the IEEE 802.11 PHY and MAC layer accounts for more than 80% of the channel utilization time, while the actual payload only uses 20% of the time. As a consequence, the Voice over IP capacity is very low. To increase the channel utilization efficiency and the capacity several IP packets can be aggregated in one large packet and transmitted at once. This paper presents a new hop-by-hop IP packet aggregation scheme for Wireless Mesh Networks.</p><p>The size of the aggregation packets is a very important performan
APA, Harvard, Vancouver, ISO, and other styles
29

Morshed, Muhammad. "Voice over IP and Lawful Intercept : Good cop/Bad cop." Thesis, KTH, School of Information and Communication Technology (ICT), 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-24260.

Full text
Abstract:
<p>Lawful interception is a common practice for monitoring a telecommunication network by law enforcement agencies all over the world. It plays a vital role to ensure national security and to control crimes by providing authorized monitoring of communicating parties in a communication network. However, there are some important issues that need to be addressed, such as the privacy of individuals, malicious use of lawful interception by a “bad” cop, vulnerability of a lawful interception system to misuse by others, cost, legal liability, etc. These issues have lead to opposition to lawful interc
APA, Harvard, Vancouver, ISO, and other styles
30

Zhang, Hongqi. "Performance of voice over IP in mobile ad hoc networks." Thesis, University of Ottawa (Canada), 2007. http://hdl.handle.net/10393/27943.

Full text
Abstract:
The objectives of this thesis are to study the performance of voice over IP in ad-hoc networks, and to study the relationship among routing protocols, coding schemes and the quality of voice. The contribution is an adaptive rate control scheme which uses Mean Opinion Score (MOS) as criteria to improve the performance of the mobile ad hoc network. We first discuss and analyze the characteristics of wireless ad hoc network and Adaptive Multirate-Wideband (AMW) speech coding, and then provide the operation of the adaptive source-network rate control scheme consisting of the voice coding and trans
APA, Harvard, Vancouver, ISO, and other styles
31

Montminy, Christian. "A study of speech compression algorithms for Voice over IP." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0017/MQ57147.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
32

Kamat, Narasinha. "A delay-efficient rerouting scheme for voice over ip traffic." [Gainesville, Fla.] : University of Florida, 2002. http://purl.fcla.edu/fcla/etd/UFE0000548.

Full text
APA, Harvard, Vancouver, ISO, and other styles
33

Nocito, Carlos Daniel. "A Network Conditions Estimator for Voice Over IP Objective Quality Assessment." Scholarly Repository, 2011. http://scholarlyrepository.miami.edu/oa_theses/292.

Full text
Abstract:
Objective quality evaluation is a key element for the success of the emerging Voice over IP (VoIP) technologies. Although there are extensive economic incentives for the convergence of voice, data, and video networks, packet networks such as the Internet have inherent incompatibilities with the transport of real time services. Under this paradigm, network planners and administrators are interested in ongoing mechanisms to measure and ensure the quality of these real time services. Objective quality assessment algorithms can be broadly divided into a) intrusive (methods that require a reference
APA, Harvard, Vancouver, ISO, and other styles
34

Al-Najjar, Camelia. "An approach for improving performance of aggregate voice-over-IP traffic." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4216.

Full text
Abstract:
The emerging popularity and interest in Voice-over-IP (VoIP) has been accompanied by customer concerns about voice quality over these networks. The lack of an appropriate real-time capable infrastructure in packet networks along with the threats of denial-of service (DoS) attacks can deteriorate the service that these voice calls receive. And these conditions contribute to the decline in call quality in VoIP applications; therefore, error-correcting/concealing techniques remain the only alternative to provide a reasonable protection for VoIP calls against packet losses. Traditionally, each voi
APA, Harvard, Vancouver, ISO, and other styles
35

Dely, Peter. "Cross-Layer Optimization of Voice over IP in Wireless Mesh Networks." Licentiate thesis, Karlstads universitet, Avdelningen för datavetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-6280.

Full text
Abstract:
Wireless Mesh Networks (WMNs) have emerged as a promising network technology, which combines the benefits of cellular networks and Wireless Local Area Networks (WLANs). In a WMN mesh routers wirelessly relay traffic on behalf of other mesh routers or clients and thereby provide coverage areas comparable to cellular networks, while having the low complexity and low costs of WLANs. As Voice over IP (VoIP) is a very important Internet service, it is critical for the success of WMNs to support high quality VoIP. However, currentWMNs are not adapted well for VoIP. The capacity and scalability of si
APA, Harvard, Vancouver, ISO, and other styles
36

Stenman, Peter, and Mikael Janson. "Talöverföring för trygghetslarm över internet : Voice over IP for personal alarms." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-205349.

Full text
Abstract:
During the last couple of years there has been a shift in technology within the Swedish elderly care where the analog personal security alarm is being replaced with personal security alarm that uses internet to communicate. This transition happens due to the ever increasing access to the internet among the elderly and the decreasing availability of analog personal security alarms. This paper describes the work whose purpose is to develop a system that will act as a prototype of a personal security alarm that uses Voice Over IP and the protocol Session Initiation Protocol. The final system is t
APA, Harvard, Vancouver, ISO, and other styles
37

Parperis, Marios S. "Delay estimation and its QoS implications in voice over IP networks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0024/MQ52394.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
38

Parperis, Marios S. (Marios Stavrou) Carleton University Dissertation Engineering Systems and Computer. "Delay estimation and its QoS implications in voice over IP networks." Ottawa, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
39

Araujo, Maria S., and Ben A. Abbott. "PCM vs. Networking: Spectral Efficiency Wars - A Pragmatic View." International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581747.

Full text
Abstract:
ITC/USA 2012 Conference Proceedings / The Forty-Eighth Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2012 / Town and Country Resort & Convention Center, San Diego, California<br>The expected efficiency of network-based telemetry systems vs. the tried and true PCM-based approaches is a debated topic. This paper chooses to use a lighthearted voice to pull the two sides of the "war" to a table of negotiation based on metrics. Ultimately, focusing on metrics that truly define efficiency is the key to understanding the varying points of view. A table of thes
APA, Harvard, Vancouver, ISO, and other styles
40

Johnsson, Sven. "Hardware and software development of a uClinux Voice over IP telephone platform." Thesis, Linköping University, Department of Science and Technology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-9455.

Full text
Abstract:
<p>Voice over IP technology (VoIP) has recently gained popularity among consumers. Many popular VoIP services exist only as software for PCs. The need of taking such services out of the PC, into a stand-alone device has been discovered, and this thesis work deals with the development of such a device. The thesis work is done for Häger Scandinavia AB, a Swedish telephone manufacturer. This thesis work covers the design of a complete prototype of a table-top VoIP telephone running an embedded Linux Operating system. Design areas include product development, hardware design and software design.Th
APA, Harvard, Vancouver, ISO, and other styles
41

Li, Hong. "Quality-of-service routing for Voice-over-IP in service overlay networks." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=86808.

Full text
Abstract:
Voice-over-IP (VoIP) becomes more and more popular with the development of service convergence in the next generation network. This thesis focuses on improving VoIP quality with application-layer routing in service overlay networks.<br>Internet end-to-end delay is one of the most important impairments on VoIP quality. We therefore analyze, model and simulate it to better understand it and thus to discover potential advantages of routing in service overlay networks. Based on the investigation of the Internet end-to-end delay, we find that VoIP quality on a pair of diverse paths is better and mo
APA, Harvard, Vancouver, ISO, and other styles
42

Hung, Shirley Kon-Jean. "Managing uncertainty : foresight and flexibility in cryptography and voice over IP policy." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/49679.

Full text
Abstract:
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Political Science, 2008.<br>"February 2008."<br>Includes bibliographical references (p. 235-248).<br>This main question in this dissertation is under what conditions government agencies show foresight in formulating strategies for managing emerging technologies. A secondary question is when they are capable of adaptation. Conventional wisdom and most organization theory literature suggest that organizations are reactive rather than proactive, reluctant to change, and responsive only to threats to their core mission or autonomy. T
APA, Harvard, Vancouver, ISO, and other styles
43

Majed, Najmeddine. "Measuring and improving the quality of experience of mobile voice over IP." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2018. http://www.theses.fr/2018IMTA0099/document.

Full text
Abstract:
Les réseaux mobiles 4G basés sur la norme LTE (Long Term Evolution), sont des réseaux tout IP. Les différents problèmes de transport IP comme le retard, la gigue et la perte despaquets peuvent fortement dégrader la qualité des communications temps réel telles que la téléphonie. Les opérateurs ont mis en oeuvre des mécanismes d’optimisation du transport de la voix dans le réseau afin d'améliorer la qualité perçue. Cependant, les algorithmes propriétaires de gestion de la qualité dans les terminaux ne sont pas spécifiés dans les standards. Dans ce contexte, nous nous intéressons aux mécanismes d
APA, Harvard, Vancouver, ISO, and other styles
44

Bassil, Carole. "SVSP (Secure Voice over IP Simple Protocol) une solution pour la sécurisation de la voix sur IP." Phd thesis, Télécom ParisTech, 2005. http://pastel.archives-ouvertes.fr/pastel-00001577.

Full text
Abstract:
Depuis l'invention du premier téléphone par Alexandre Graham Bell en 1869, la téléphonie n'a cessé d'évoluer : de la commutation de circuit à la commutation par paquet, d'un réseau fixe à un réseau mobile. Plusieurs architectures ont été crées où la voix est combinée aux données et à l'imagerie pour être transportées sur un seul réseau data. La nature de ces réseaux ouverts a un impact sur la voix en terme de sécurité. D'où le besoin imminent de sécuriser la voix tout en assurant une bonne qualité de service à la voix aussi bien dans un réseau fixe que dans un réseau mobile ou IP. Des solution
APA, Harvard, Vancouver, ISO, and other styles
45

Bassil, Carole. "SVSP (Secure Voice over IP Simple Protocole) : une solution pour la sécurisation de la voix sur IP." Paris, ENST, 2005. http://www.theses.fr/2005ENST0045.

Full text
Abstract:
Depuis l invention du premier téléphone par Alexandre Graham Bell en 1869, la téléphonie n a cessé d évoluer : de la commutation de circuit à la commutation par paquet, d un réseau fixe à un réseau mobile. Plusieurs architectures ont été crées où la voix est combinée aux données et à l imagerie pour être transportées sur un seul réseau data. La nature de ces réseaux ouverts a un impact sur la voix en terme de sécurité. D où le besoin imminent de sécuriser la voix tout en assurant une bonne qualité de service à la voix aussi bien dans un réseau fixe que dans un réseau mobile ou IP. Des solution
APA, Harvard, Vancouver, ISO, and other styles
46

Bassil, Carole. "SVSP, Secure voice over IP simple protocole, une solution pour la sécurisation de la voix sur IP /." Paris : École nationale supérieure des télécommunications, 2006. http://catalogue.bnf.fr/ark:/12148/cb40208342h.

Full text
APA, Harvard, Vancouver, ISO, and other styles
47

Junghänel, Jens. "VOCAL-Einsatz an der TU Chemnitz." Universitätsbibliothek Chemnitz, 2003. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200301347.

Full text
APA, Harvard, Vancouver, ISO, and other styles
48

SCHEINER, LEONARDO NAHMIAS. "PERFOMANCE ANALISYS OF SIP PROTOCOL ON THE SIGNALING OF VOICE OVER IP CALLS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=7065@1.

Full text
Abstract:
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>Impulsionada pelo grande crescimento da Internet, a telefonia IP conquistou a atenção do mercado e dos grandes fabricantes com promessas de redução de custo na operacão, gerência, provisionamento, manutenção e tarifação. Diversos protocolos foram desenvolvidos de modo a prover VoIP como o H.323, MGCP, Megaco e SIP. O SIP tem se destacado por ser um protocolo baseado em texto, estensível, independente do protocolo de transporte, e portanto mais flexível e simples que seu concorrente direto, o H.323. O SIP (Session Initiation
APA, Harvard, Vancouver, ISO, and other styles
49

Escobedo, Gonzalez Maiz Marco Antonio 1976. "Convivo communicator : an interface-adaptive voice over IP system for poor quality networks." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/61126.

Full text
Abstract:
Thesis (S.M.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2002.<br>Includes bibliographical references (leaves 100-102).<br>This thesis presents Convivo, a VoIP system designed to provide reliable voice communication for poor quality networks, especially those found in rural areas of the developing world. Convivo introduces an original approach to maintain voice communication interaction in presence of poor network performance: an Interface-Adaptation mechanism that suggests adjusting the application user interface to conform
APA, Harvard, Vancouver, ISO, and other styles
50

Shaikh, A. D. "Modelling data and voice traffic over IP networks using continuous-time Markov models." Thesis, Aston University, 2009. http://publications.aston.ac.uk/15385/.

Full text
Abstract:
Common approaches to IP-traffic modelling have featured the use of stochastic models, based on the Markov property, which can be classified into black box and white box models based on the approach used for modelling traffic. White box models, are simple to understand, transparent and have a physical meaning attributed to each of the associated parameters. To exploit this key advantage, this thesis explores the use of simple classic continuous-time Markov models based on a white box approach, to model, not only the network traffic statistics but also the source behaviour with respect to the ne
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the bibliographies on the topic 'Voice over IP' for other source types:
Journal articles Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography