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1

Gingold, David. "Integrated digital services for cable networks." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10650.

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2

Serbest, Yetik. "Resource management of integrated services networks /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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3

Johnson, Robert. "On the proposed integrated services digital network /." Online version of thesis, 1987. http://hdl.handle.net/1850/10141.

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4

Christoffersen, Daniel Arthur 1964. "Internetworking the defense data network with an integrated services digital network." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276716.

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The motivation behind this thesis is to develop a procedure for internetworking the Defense Data Network (DDN) with an Integrated Services Digital Network (ISDN). To accomplish this internetworking problem an integrated gateway must be designed to compensate for incompatibilities between the two networks. This thesis approaches this problem by giving a description of the two networks, DDN and ISDN, and also presenting a general approach to gateway design. This information is then combined into a detailed procedure for implementing a gateway to internetwork the DDN and ISDN. This is followed by a discussion of the practical aspects of the DDN/ISDN internetworking problem.
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5

Zarkesh-Ha, Paymen. "Global interconnect modeling for a Gigascale System-on-a-Chip (GSoC)." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/13027.

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6

Newton, Christopher A. "An ISDN environment for the NeXT machine." Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/8229.

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7

Johnny, Wong. "Performance evaluation of d-channel access protocols in ISDN." Thesis, The University of Sydney, 1986. https://hdl.handle.net/2123/28529.

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Chapter One introduces the concept of Integrated Services Digital Networks (ISDN). A brief outline of the integration of voice and data services is given, indicating the different characteristics of these two services. Evolution from the existing telephone networks towards the full ISDN is mentioned, emphasizing the transition from analog to all digital in the transmission facilities. The ISDN emphasizing and customer access are discussed together with the access protocol architecture. Chapter Two surveys the modelling and evaluation techniques in the study of communication and computer systems. These include the analytical, simulation and direct measurement methods. Common approaches to model queueing systems are described, with particular interest in the modelling of multiple classes priority queues. Event-oriented simulation methodology is presented, including techniques to establish the credibility of the simulation models. Chapter Three describes the access protocols that are suitable for the ISDN. Queueing and simulation models, based on the approaches mentioned in Chapter Two, are used in the performance studies and numerical comparisons. In particular, the pre-emptive access procedures are suggested as alternatives to improve the signalling delay. Chapter Four derives an appropriate queueing model for the analysis of the 95 percentile of the s-delay in ISDN, from which the Laplace Transform of the s-delay is obtained. Inversion of the Laplace Transform can only be obtained by using numerical methods. Comparison with simulation results is made to validate the queueing model. Chapter Five presents a new access protocol based on the packet-switching technology. Each station is assumed to generate messages consisting of an arbitrarily distributed, random number of fixed size packets. The channel is time-slotted with a slot time equal to a packet transmission time. The protocol ensures that an ongoing message transmission can not be preempted by any messages of the same class, but can be pre-empted at the beginning of the next slot by a higher priority message. Study of this protocol is based on simulation and analytical techniques. From the mean signalling delay formula derived, the optimal packet size is obtained. With the optimal packet size, the performance of the mean signalling delay of the Packet Switching protocol is found to be as good as those preemptive ones. Comparisons between various priority protocols are presented to indicate the delay-throughput characteristics among them. Chapter Six discusses the fairness of the access protocols in ISDN. The fairness measure is according to the average end-to-end message delay for each station. This issue is studied through the design aspects of the scheduling disciplines. A Random Number Prefix scheme is proposed to improve the fairness measure. Chapter Seven summarises the major conclusions reached from the investigations. Further researches are suggested and discussed.
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8

Raviraj, C. R. "Adaptive conversational speech communication - analysis and application to integrated services networks." Thesis, University of Essex, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236291.

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9

Joshi, Vilas (Vilas Vishwanath) Carleton University Dissertation Engineering Electrical. "Sequence estimation techniques for enhanced digital subscriber loop transmission capability." Ottawa, 1988.

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10

Han, Ki Jun. "A high-speed data/voice integrated campus backbone network: Design and simulation." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184297.

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This dissertation is concerned with the design of a high speed fiber optic campus backbone network which not only provides a high bandwidth connection to various LANs, PBXs, ISDNs, supercomputers, and other high speed computing facilities but also offers an integrated service of voice and data. The campus backbone network is based on an optical fiber dual ring structure. A new token ring protocol based on the IEEE 802.5 standard is proposed as the medium access protocol for the backbone network. In the proposed token ring network, the token holder transmits packets in an exhaustive way when no other nodes want to transmit voice packets. If any node has voice packets waiting for transmission, the token holder can transmit only a single packet during its access opportunity. In this way, not only can the voice delay be bounded at high voice traffic intensities, but a high data throughput can be achieved at low voice traffic intensities. The potential use of Time Division Multiplexing (TDM) was also considered, but the TDM technique was found to be less suitable for our campus environment mainly due to its low efficiency in bursty environments and complex hardware requirements. The backbone network was simulated using the Simscript II.5 discrete event simulation language. The simulation results indicated that the proposed token ring protocol provides satisfactory performances in every respect. A network interface unit (NIU) was designed, which consists of optical transmitter, receiver, and fault tolerance mechanisms as well as the protocol engine. The optimal values of major parameters for the NIU design were determined by the simulation.
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11

Meempat, Gopalakrishnan. "Modeling and adaptive resource management in integrated communication networks." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184843.

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The focus of this dissertation is the development of resource management schemes for integrated networks, with the major contributions being: (i) the development of an optimal adaptive buffer management scheme for the packet-switched subsystem, (ii) the integration of a moveable-boundary hybrid switching scheme with the time assigned speech interpolation technique for implementing a congestion control mechanism for the packet-switched subsystem, and (iii) the development of an adaptive hierarchical scheme for implementing the access control and routing functions within the circuit-switched subsystem. The problem of buffer management at an integrated network node is formulated as a nonlinear programming problem with a convex objective function and an interative solution technique with fast convergence is proposed for a real-time implementation of the buffer management scheme in practical environments. In order to exercise an additional degree of control over the packet-blocking probability at each hybrid-switched link within the network, a new multiplexing scheme based on the integration of the moveable-boundary hybrid switching scheme and the time assigned speech interpolation technique is presented in this dissertation. The tradeoff between the corresponding decrease in the packet blocking probability and the increase in the circuit freezeout fraction is demonstrated by a detailed queueing analysis of the multiplexer. Specific algorithms are also presented in this dissertation for the solution of the access control and routing problems within the circuit-switched subsystem. In particular, an access control scheme is developed by solving an integer programming problem formulated using the policy of complete partitioning of the available bandwidth among the competing user classes. As an alternative to the completely partitioned approach, the problem of traffic routing is considered in a network that supports homogeneous traffic classes based on the policy of complete sharing. Finally, for the general case of networks with heterogeneous traffic classes, a hierarchical scheme is developed for the implementation of the access control and the routing functions at two functional levels, where the access control is implemented by the network supervisor who solves an appropriate linear integer programming problem periodically, and the routing function is handled by the individual nodes of the network on a distributed basis. (Abstract shortened with permission of author.)
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12

Yu, Jie Petropulu Athina P. "Modeling of high-speed wireline and wireless network traffic /." Philadelphia, Pa. : Drexel University, 2005. http://dspace.library.drexel.edu/handle/1860/469.

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13

Doble, James Carleton University Dissertation Engineering Electrical. "Distribution of protocol functions in an interworking-based ISDN switching node implementation." Ottawa, 1988.

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14

Lin, Rui Carleton University Dissertation Engineering Electrical. "Multiplexing, cell loss and traffic controls in ATM networks." Ottawa, 1992.

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15

Thrasher, Evelyn Byrd Terry Anthony. "Examining strategic fit for the interorganizational network an empirical investigation of the health care integrated delivery system /." Auburn, Ala., 2006. http://hdl.handle.net/10415/1300.

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16

Sabaa, Amr Gaber. "Switching and error recovery in terabit ATM networks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ37362.pdf.

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17

Calnan, Roger Stuart. "The integration of voice within a digital network." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253735.

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18

Pitsillides, Andreas, and Andreas Pitsillides@ucy ac cy. "Control structures and techniques for broadband-ISDN communication systems." Swinburne University of Technology, 1993. http://adt.lib.swin.edu.au./public/adt-VSWT20060321.132650.

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A structured organisation of tasks, possibly hierarchical, is necessary in a BISDN network due to the complexity of the system, its large dimension and its physical distribution in space. Feedback (possibly supplemented by feedforward) control has an essential role in the effective and efficient control of BISDN. Additionally, due to the nonstationarity of the network and its complexity, a number of different (dynamic) modelling techniques are required at each level of the hierarchy. Also, to increase the efficiency of the network and allow flexibility in the control actions (by extending the control horizon) the (dynamic) tradeoff between service-rate, buffer-space, cell-delay and cell-loss must be exploited. In this thesis we take account of the above and solve three essential control problems, required for the effective control of BISDN. These solutions are suitable for both stationary and nonstationary conditions. Also, they are suitable for implementation in a decentralised coordinated form, that can form a part of a hierarchical organisation of control tasks. Thus, the control schemes aim for global solutions, yet they are not limited by the propagation delay, which can be high in comparison to the dynamics of the controlled events. Specifically, novel control approaches to the problems of Connection Admission Control (CAC), flow control and service-rate control are developed. We make use of adaptive feedback and adaptive feedforward control methodologies to solve the combined CAC and flow control problem. Using a novel control concept, based on only two groups of traffic (the controllable and uncontrollable group) we formulate a problem aimed at high (unity) utilisation of resources while maintaining quality of service at prescribed levels. Using certain assumptions we have proven that in the long term the regulator is stable and that it converges to zero regulation error. Bounds on operating conditions are also derived, and using simulation we show that high utilisation can be achieved as suggested by the theory, together with robustness for unforeseen traffic connections and disconnections. Even with such a high efficiency and strong properties on the quality of service provided, the only traffic descriptor required from the user is that of the peak rate of the uncontrollable traffic. A novel scheme for the dynamic control of service-rate is formulated, using feedback from the network queues. We use a unified dynamic fluid flow equation to describe the virtual path (VP) and hence formulate two illustrative examples for the control of service-rate (at the VP level). One is a nonlinear optimal multilevel implementation, that features a coordinated decentralised solution. The other is a single level implementation that turns out to be computationally complex. Therefore, for the single level implementation the costate equilibrium solution is also derived. For the optimal policies derived, we discuss their implementation complexity and provide implementable solutions. Their performance is evaluated using simulation. Additionally, using an ad hoc approach we have extended previous published works on the decentralised coordinated control of large scale nonlinear systems to also deal with time-delayed systems.
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19

Fung, Ping-yuen. "Online algorithms for the provision of quality of service in networks." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B3158052X.

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20

Omundsen, Daniel (Daniel Simon) Carleton University Dissertation Engineering Electrical. "A pipelined, multi-processor architecture for a connectionless server for broadband ISDN." Ottawa, 1992.

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21

Miller, W. "The design and application of power line carrier communication and remote meter reading for use in integrated services and broadband-integrated services digital networks." Thesis, Open University, 1997. http://oro.open.ac.uk/57707/.

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22

McBride, Andrew. "A hybrid voice/text electronic mail system : an application of the integrated services digital network /." Online version of thesis, 1994. http://hdl.handle.net/1850/12158.

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23

Barnes, Brian E. "Real-time resource management for RSVP/ATM edge devices." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/15395.

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24

Alvarez, Isidro. "Development of a security network (SECNET) based on integrated services digital network (ISDN)." FIU Digital Commons, 1996. http://digitalcommons.fiu.edu/etd/2064.

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The progress in the computing and communication industries together with the fast evolution of the semiconductor industry has made possible advances in the communications field. These advances have been used by other related applications to improve the services that they bring about. On the other hand, business crimes have increased three digits orders of magnitude in one decade, making from 20% to 30% of small businesses fail. These conditions demand new solutions to make security systems more reliable and efficient. The present work combines ISDN as a network with a security system to create a security network (SECNET). It will create intelligent and distributed security devices that communicate information from different places to a main security office by using the ISDN lines available at the premises. This work also introduces a new idea of individual equipment protection.
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25

Fornaro, Antony. "Testbed evaluation of integrating ethernet switches in the differentiated services architecture using virtual LANs." Thesis, Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/15684.

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26

Barnette, Mark Francis. "An assessment of the Integrated Services Digital Network in support of command." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/26894.

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This thesis explores the technology of the Integrated Services Digital Network (ISDN) and assess its value to strategic U.S. command, control, communications and intelligence (C3I). The author provides a brief overview of how telecommunications systems support the concept of C2 and what some of the problems are in this area. A review of the ISDN concept is provided which serves as the foundation for assessing the significance of ISDN to the military and its value in meeting the particular requirements associated with C3I telecommunication networks. Some of the more substantive issues of transitioning to ISDN are addressed such as network management and security. The author concludes that ISDN is an attractive long-term goal architecture. They are, however, several significant areas (applications, network management requirements, security architecture) that must be proactively addressed before ISDN is suitable for application in the C3I environment. (fr)
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27

Ching, Kai-Sang. "Priority CSMA schemes for integrated voice and data transmission." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28372.

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Priority schemes employing the inherent properties of carrier-sense multiple-access (CSMA) schemes are investigated and then applied to the integrated transmission of voice and data. A priority scheme composed of 1-persistent and non-persistent CSMA protocols is proposed. The throughput and delay characteristics of this protocol are evaluated by mathematical analysis and simulation, respectively. The approach of throughput analysis is further extended to another more general case, p-persistent CSMA with two persistency factors, the throughput performance of which had not been analyzed before. Simulations are carried out to study the delay characteristics of this protocol. After careful consideration of the features of the priority schemes studied, two protocols are proposed for integrated voice and data transmission. While their ultimate purpose is for integrated services, they have different application. One of them is applied to local area network; the other is suitable for packet radio network. The distinctive features of the former are simplicity and flexibility. The latter is different from other studies in that collision detection is not required, and that it has small mean and variance of voice packet delay. Performance characteristics of both of these protocols are examined by simulations under various system parameter values.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
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28

Jahromi, Masaud M. J. "ATM based service independent system." Thesis, University of Kent, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250331.

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29

Niranjan, Mysore Radhika. "Towards IQ-Appliances: Quality-awareness in Information Virtualization." Thesis, Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-04262007-121537/.

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Thesis (M. S.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2008.
Ferri, Bonnie Heck, Committee Member ; Gavrilovska, Ada, Committee Member ; Yalamanchili, Sudhakar, Committee Member ; Schwan, Karsten, Committee Chair.
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30

Zhang, Liren. "Recovery of cell loss in ATM networks using forward error correction coding techniques /." Title page, contents and summary only, 1992. http://web4.library.adelaide.edu.au/theses/09PH/09phz6332.pdf.

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Thesis (Ph. D.)--University of Adelaide, Dept. of Electrical and Electronic Engineering, 1993.
Copies of author's previously published articles inserted. Includes bibliographical references (leaves 179-186).
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31

Jiao, QingZhong. "Admission control and congestion control in ATM/CDMA network." Thesis, Connect to online version, 1995. http://0-wwwlib.umi.com.mercury.concordia.ca/cr/concordia/fullcit?pMQ90887.

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32

Ngo, Benjamin Bin-yong Carleton University Dissertation Engineering Electrical. "Applications of matrix-analytic solutions to queueing systems arising in integrated services digital network." Ottawa, 1990.

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33

Sayadian, Edward V. "Video transfer application transport protocol design over ATM networks." Master's thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-03172010-020223/.

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34

Thuppal, Rajagopalan. "On pipelined multistage interconnection networks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0002/MQ36185.pdf.

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35

Fung, Ping-yuen, and 馮秉遠. "Online algorithms for the provision of quality of service in networks." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B3158052X.

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36

Sekercioglu, Ahmet, and ahmet@hyperion ctie monash edu au. "Fuzzy logic control techniques and structures for Asynchronous Transfer Mode (ATM) based multimedia networks." Swinburne University of Technology, 1999. http://adt.lib.swin.edu.au./public/adt-VSWT20050411.130014.

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The research presented in this thesis aims to demonstrate that fuzzy logic is a useful tool for developing mechanisms for controlling traffc flow in ATM based multimedia networks to maintain quality of service (QoS) requirements and maximize resource utilization. The study first proposes a hierarchical, multilevel control structure for ATM networks to exploit the reported strengths of fuzzy logic at various control levels. Then, an extensive development and evaluation is presented for a subset of the proposed control architecture at the congestion control level. An ATM based multimedia network must have quite sophisticated traffc control capabilities to effectively handle the requirements of a dynamically varying mixture of voice, video and data services while meeting the required levels of performance. Feedback control techniques have an essential role for the effective and efficient management of the resources of ATM networks. However, development of conventional feedback control techniques relies on the availability of analytical system models. The characteristics of ATM networks and the complexity of service requirements cause the analytical modeling to be very difficult, if not impossible. The lack of realistic dynamic explicit models leads to substantial problems in developing control solutions for B-ISDN networks. This limits the ability of conventional techniques to directly address the control objectives for ATM networks. In the literature, several connection admission and congestion control methods for B-ISDN networks have been reported, and these have achieved mixed success. Usually they either assume heavily simplified models, or they are too complicated to implement, mainly derived using probabilistic (steady-state) models. Fuzzy logic controllers, on the other hand, have been applied successfully to the task of controlling systems for which analytical models are not easily obtainable. Fuzzy logic control is a knowledge-based control strategy that can be utilized when an explicit model of a system is not available or, the model itself, if available, is highly complex and nonlinear. In this case, the problem of control system design is based on qualitative and/or empirically acquired knowledge regarding the operation of the system. Representation of qualitative or empirically acquired knowledge in a fuzzy logic controller is achieved by linguistic expressions in the form of fuzzy relational equations. By using fuzzy relational equations, classifications related to system parameters can be derived without explicit description. The thesis presents a new predictive congestion control scheme, Fuzzy Explicit Rate Marking (FERM), which aims to avoid congestion, and by doing so minimize the cell losses, attain high server utilization, and maintain the fair use of links. The performance of the FERM scheme is extremely competitive with that of control schemes developed using traditional methods over a considerable period of time. The results of the study demonstrate that fuzzy logic control is a highly effective design tool for this type of problems, relative to the traditional methods. When controlled systems are highly nonlinear and complex, it keeps the human insight alive and accessible at the lower levels of the control hierarchy, and so higher levels can be built on this understanding. Additionally, the FERM scheme has been extended to adaptively tune (A-FERM) so that continuous automatic tuning of the parameters can be achieved, and thus be more adaptive to system changes leading to better utilization of network bandwidth. This achieves a level of robustness that is not exhibited by other congestion control schemes reported in the literature. In this work, the focus is on ATM networks rather than IP based networks. For historical reasons, and due to fundamental philosophical differences in the (earlier) approach to congestion control, the research for control of TCP/IP and ATM based networks proceeded separately. However, some convergence between them has recently become evident. In the TCP/IP literature proposals have appeared on active queue management in routers, and Explicit Congestion Notication (ECN) for IP. It is reasonably expected that, the algorithms developed in this study will be applicable to IP based multimedia networks as well.
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37

Fernandez, Irma Becerra. "Encryption-based security for public networks : technique and application." FIU Digital Commons, 1994. http://digitalcommons.fiu.edu/etd/3296.

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This dissertation describes the development of a new system whereby the Public Switch Telephone Network (PSTN), which is not secure, can perform like a private network. Integrated Services Digital Network (ISDN) forms a technical platform for other communication technologies, such as frame relay and Switched Megabit Data Service (SMDS). This is an original and innovative hardware and software design which can be embedded into the ISDN Customer Premises Equipment (CPE) to privatize the public ISDN without the need to upgrade the existing switching equipment. This research incorporates original design and development of the following hardware and software modules to provide real-time encryption and decryption of images and data in the ISDN medium: 1. ISDN Communications Module with customized Caller-ID access. 2. Token Access Control module for secure log-in. 3. A Hybrid Cryptographic Module, public key for key management and authentication, and private key for privacy. This Cryptographic module, the Security Extension Module to the Terminal Adapter (SEMTA), was implemented in software, and then optimized in hardware. This work proves that medical images and legal documents can be transmitted through the PSTN without any security breach, guaranteeing the privacy, confidentiality, and authenticity of the data.
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38

Myronyk, James David Nicholas Carleton University Dissertation Information and Systems Science. "The effectiveness of a contemporary workstation architecture in servicing a broadband integrated services digital network workload." Ottawa, 1991.

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39

Darmaros, Theodore. "Implementing the Integrated Services Digital Network (ISDN) : prospects and problems in the realisation of a telecommunications concept." Thesis, University of Sussex, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297115.

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The present thesis discusses the interrelation between technical change, institutional transformation and public policy in the context of the planning and early development of new public telecommunications infrastructures. Efforts to implement ISDN have featured prominently in the above developments during the 1980s, thus offering the empirical ground on which the thesis focuses. Specifically, the thesis aims to identify the main critical factors that have been shaping the realisation of ISDN nationally and internationally and assess their impact in its early commercialisation stage. A number of analytical concepts provide the background for the above exercise: the Schumpeterian "creative destruction" and its variants; the notion of complementarity between technical change and institutional restructuring; different classifications of the innovation process; the ideas of technological paradigms and trajectories; the role of user-producer relations. ISDN is assessed in view of the broader transformations that have revolutionised the telecommunications industry during the 1980s. The innovative record of "technical trends" and socio-technical "concepts" examined by the thesis supports the case for technological pluralism. Their presence opens a variety of implementation alternatives for policy makers and defies the technological determinism strongly present in the original versions of the ISDN concept. Moreover, the spectrum of liberalisation regulatory options analysed, creates radically different conditions for the realisation of ISDN from the monopoly environment it was conceived in. As a result, ISDN is forced to change, adapting to a competitive, "open network" environment. The thesis examines the specific experiences of ISDN implementation in the United States, Japan and the European Community (France, Germany and the U.K., plus policies promoted by the European Commission) for its early diffusion period (up to 1990). It is demonstrated that ISDN has been pushed by telecommunications suppliers as part of both their longer-term strategic plans as well as their shorter-term tactical moves. Yet supply push, including international standardisation efforts, has been unable to offer success alone. A weak user participation, later realised by some providers; a slow and complex adaptation of ISDN to the new regulatory realities; difficulties to identify "winning" commercial applications for the right markets. These are the most important problem factors in ISDN's smooth commercialisation, although with varying impact in different national environments.
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40

Smith, Quentin D. "AN EVOLUTIONARY APPROACHTO A COMMUNICATIONS INFRASTRUCTURE FOR INTEGRATED VOICE, VIDEO AND HIGH SPEED DATA FROM RANGETO DESKTOP USING ATM." International Foundation for Telemetering, 1993. http://hdl.handle.net/10150/608864.

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International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, Nevada
As technology progresses we are faced with ever increasing volumes and rates of raw and processed telemetry data along with digitized high resolution video and the less demanding areas of video conferencing, voice communications and general LAN-based data communications. The distribution of all this data has traditionally been accomplished by solutions designed to each particular data type. With the advent of Asynchronous Transfer Modes or ATM, a single technology now exists for providing an integrated solution to distributing these diverse data types. This allows an integrated set of switches, transmission equipment and fiber optics to provide multi-session connection speeds of 622 Megabits per second. ATM allows for the integration of many of the most widely used and emerging low, medium and high speed communications standards. These include SONET, FDDI, Broadband ISDN, Cell Relay, DS-3, Token Ring and Ethernet LANs. However, ATM is also very well suited to handle unique data formats and speeds, as is often the case with telemetry data. Additionally, ATM is the only data communications technology in recent times to be embraced by both the computer and telecommunications industries. Thus, ATM is a single solution for connectivity within a test center, across a test range, or between ranges. ATM can be implemented in an evolutionary manner as the needs develop. This means the rate of capital investment can be gradual and older technologies can be replaced slowly as they become the communications bottlenecks. However, success of this evolution requires some planning now. This paper provides an overview of ATM, its application to test ranges and telemetry distribution. A road map is laid out which can guide the evolutionary changeover from today's technologies to a full ATM communications infrastructure. Special applications such as the support of high performance multimedia workstations are presented.
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41

Manzano, Ronaldo Sérgio Novaes. "Monitoramento e diagnóstico de falhas em uma coluna de destilação." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264125.

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Orientador: Eurípedes Guilherme de Oliveira Nóbrega
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
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Resumo: O objetivo deste trabalho é criar uma metodologia que monitore e detecte em tempo real as falhas, seja de processo seja de instrumentos, em uma coluna de destilação. Para tanto, foi utilizado um sistema de inferência nebulosa com um sistema de análise de confiabilidade de instrumentos a partir dos diagnósticos disponibilizados na rede industrial Fieldbus Foundation®. O resultado é uma simples, prática e ao mesmo tempo poderosa ferramenta que permite aos operadores analisarem e identificarem falhas e todas as suas causas prováveis, permitindo-lhes assim tomar ações preventivas e/ou corretivas mais rapidamente e com maior assertividade. Essa metodologia foi desenvolvida em VBA Excel® com interface amigável e gráfica. Para cada falha detectada é detalhada sua causa raiz (pode ser mais de uma), ação a ser tomada e é dada uma indicação percentual de intensidade de falha, facilitando a priorização das ações de manutenção
Abstract: The objective is to create a methodology for to monitor and to detect faults in real time, as for process as for instruments in a distillation column. For this, we used a fuzzy inference system with another instruments reliability analysis system from the diagnostics available in the Fieldbus Foundation® industrial network. The result is a simple, practical and yet powerful tool that allows the operators to analyze and to identify faults and their possible causes, thus allowing them to take preventive and / or corrective actions more quickly and with greater assertiveness. This methodology was developed in Excel® VBA with friendly interface and graphics. For each fault detected is detailed their root-cause (may be more than one is possible), the actions to take and so, it's given a percentage indication of failure intensity, facilitating the prioritization for maintenance's actions
Mestrado
Mecanica dos Sólidos e Projeto Mecanico
Mestre em Engenharia Mecânica
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42

Hachfi, Fakhreddine Mohamed. "Future of asynchronous transfer mode networking." CSUSB ScholarWorks, 2004. https://scholarworks.lib.csusb.edu/etd-project/2639.

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The growth of Asynchronous Transfer Mode (ATM) was considered to be the ideal carrier of the high bandwidth applications like video on demand and multimedia e-learning. ATM emerged commercially in the beginning of the 1990's. It was designed to provide a different quality of service at a speed up 100 Gbps for both real time and non real time application. The turn of the 90's saw a variety of technologies being developed. This project analyzes these technologies, compares them to the Asynchronous Transfer Mode and assesses the future of ATM.
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43

Yan, Zhaohui. "Performance Analysis of A Banyan Based ATM Switching Fabric with Packet Priority." PDXScholar, 1995. https://pdxscholar.library.pdx.edu/open_access_etds/5199.

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Since the emergence of the Asynchronous Transfer Mode ( A TM ) concept, various switching architectures have been proposed. The multistage interconnection networks have been proposed for the switching architecture under the A TM environment. In this thesis, we propose a new model for the performance analysis of an A TM switching fabric based on single-buffered Banyan network. In this model, we use a three-state, i.e., "empty", "new" and "blocked" Markov chain model to describe the behavior of the buffer within a switching element. In addition to traditional statistical analysis including throughput and delay, we also examine the delay variation. Performance results show that the proposed model is more accurate in describing the switch behavior under uniform traffic environment in comparison with the "two-state" Markov chain model developed by Jenq, et. al.[4] [6] . Based on the "three-state" model, we study a packet priority scheme which gives the blocked packet higher priority to be routed forward during contention. It is found that the standard deviation of the network delay is reduced by about 30%.
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44

Marques, Marcelo de Oliveira. "Dimensionamento de enlace sem fio com integração de voz e de dados." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/261774.

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Orientador: Ivanil Sebastião Bonatti
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Eletrica
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Resumo: O dimensionamento de enlace sem fio das redes de telecomunicação com integração de voz e de dados é abordado nesse trabalho. Foram desenvolvidos procedimentos de análise e síntese para os dois modelos de filas considerados: modelos markovianos; e modelos com prioridade, sem e com preempção. Esquemas com ou sem compartilhamento de recursos e com buffer finito e infinito foram considerados. Comparações numéricas foram feitas para os modelos utilizados, bem como, os resultados obtidos no dimensionamento do enlace foram submetidos a condições de sobrecarga do tráfego de voz e de dados de forma a analisar o comportamento dos parâmetros de qualidade de serviço especificados
Abstract: The dimensioning of telecommunications network wireless link, with voice and data integration, is presented in this paper. Analysis and synthesis procedures were developed considering Markovian and priority models (with or without preemption). Schemes with or without resources sharing and finite and infinite buffer were considered. The selected models were numerically compared and the results of the dimensioning were submitted to simulations of traffic overload conditions in order to analyze the quality of service parameters behavior
Mestrado
Telecomunicações e Telemática
Mestre em Engenharia Elétrica
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45

Roberts, James N. "Etudes des performances de reseaux de telecommunications numeriques integrant des services a haut debit." Paris 6, 1987. http://www.theses.fr/1987PA066604.

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Cette these etudie l'impact sur le plan du trafic de la fourniture des services a nx64 kbps par le rnis suivant trois aspects: caracterisation des teleservices, choix approprie de services support et problemes de teletrafic
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46

Silveira, Loreno Menezes da 1952. "Conceito e dimensionamento de recursos de voz e sinalização em redes de nova geração." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259657.

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Orientador: Michel Daoud Yacoub
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação
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Resumo: Esta dissertação apresenta uma visão da evolução das redes de telecomunicações objetivando o atendimento dos parâmetros da Qualidade de Serviço de redes IP aos requisitos de qualidade de voz das redes telefônicas de circuitos comutados. Gera também uma série de resultados úteis para planejar a introdução de novas tecnologias e de Redes de Nova Geração (NGN) para serviços de voz. Entre os resultados, introduz uma metodologia de planejamento de rede com base na experiência do autor na área. A aplicação desta metodologia é descrita em um caso de estudo sobre a introdução do serviço de voz através de uma rede IP existente. Analisa parâmetros de qualidade de serviço, requisitos de qualidade de voz e, finalmente, calcula a taxa de transferência de fluxo de dados adicional devido ao tráfego de voz. Os cálculos são baseados em um modelo de dimensionamento implementado em uma planilha do Excel. Apesar de não mostrado neste trabalho, os resultados provaram sua efetividade e consistência com a implantação de uma prestadora específica e com o comportamento subsequente da rede em cidades relevantes, como São Paulo, Rio de Janeiro e Belo Horizontes. A dissertação também apresenta modelos de dimensionamento para o tráfego de sinalização: Sistema de Sinalização Nº 7 (ISUP - Rede Digital de Serviços Integrados e BICC - Portador de Controle de chamada Independent) para uso em redes TDM (Time Division Multiplex), ATM (Asynchronous Transfer Mode) ou NGN, explorando estes modelos de aplicação para o protocolo H.248 com possível extensão a SIP, ambos usados no contexto NGN
Abstract: This dissertation provides an overview of telecommunication networks evolution in the light of compliance of IP networks Quality of Service¿s parameters with Public Switched Telephone Networks (PSTN) voice quality requirements. It also delivers a number of new results useful for planning and designing the introduction of new technologies as well as Next Generation Networks (NGN), to provide voice services. Among the results, it introduces a network planning methodology based on the author's experience in this area. The application of such methodology is depicted in a study case concerning the introduction of the voice service over an existing IP network. It analyzes Quality of Service parameters, voice quality requirements and, finally, it calculates the additional data flow throughput due to the voice traffic. The calculations are based on a dimensioning model implemented in an excel spreadsheet. Although not being shown here, the results have been proved effective and consistent with a specific carrier deployment and subsequent network behavior in relevant cities like São, Paulo, Rio de Janeiro and Belo Horizonte. This work also presents a dimensioning model for signaling traffic: Signalling System Nº 7 (ISUP ¿ Integrated Services Digital Networks and BICC - Bearer Independent Call Control) for use in TDM (Time Division Multiplex), ATM (Asynchronous Transfer Mode) or NGN networks. Furthermore, it exploits the application of the dimensioning model to H.248 protocol, suggesting how to extend it to SIP, both used in the NGN context
Mestrado
Telecomunicações e Telemática
Mestre em Engenharia Elétrica
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47

Régnier, Jean Michel. "Priority assignment in integrated services networks." Thesis, Massachusetts Institute of Technology, 1986. http://hdl.handle.net/1721.1/15076.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1986.
MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING
Bibliography: leaves 139-141.
by Jean Michel Régnier.
Ph.D.
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48

Lee, Narm Hee. "Routing in high speed integrated services networks." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387455.

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49

Siddiqui, Mahboob-ul-Haq. "Performance measurement methodology for integrated services networks." Thesis, Loughborough University, 1989. https://dspace.lboro.ac.uk/2134/15430.

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With the emergence of advanced integrated services networks, the need for effective performance analysis techniques has become extremely important. Further advancements in these networks can only be possible if the practical performance issues of the existing networks are clearly understood. This thesis is concerned with the design and development of a measurement system which has been implemented on a large experimental network. The measurement system is based on dedicated traffic generators which have been designed and implemented on the Project Unison network. The Unison project is a multisite networking experiment for conducting research into the interconnection and interworking of local area network based multi-media application systems. The traffic generators were first developed for the Cambridge Ring based Unison network. Once their usefulness and effectiveness was proven, high performance traffic generators using transputer technology were built for the Cambridge Fast Ring based Unison network. The measurement system is capable of measuring the conventional performance parameters such as throughput and packet delay, and is able to characterise the operational performance of network bridging components under various loading conditions. In particular, the measurement system has been used in a 'measure and tune' fashion in order to improve the performance of a complex bridging device. Accurate measurement of packet delay in wide area networks is a recognised problem. The problem is associated with the synchronisation of the clocks between the distant machines. A chronological timestamping technique has been introduced in which the clocks are synchronised using a broadcast synchronisation technique. Rugby time clock receivers have been interfaced to each generator for the purpose of synchronisation. In order to design network applications, an accurate knowledge of the expected network performance under different loading conditions is essential. Using the measurement system, this has been achieved by examining the network characteristics at the network/user interface. Also, the generators are capable of emulating a variety of application traffic which can be injected into the network along with the traffic from real applications, thus enabling user oriented performance parameters to be evaluated in a mixed traffic environment. A number of performance measurement experiments have been conducted using the measurement system. Experimental results obtained from the Unison network serve to emphasise the power and effectiveness of the measurement methodology.
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50

Dong, Liqin Carleton University Dissertation Engineering Electrical. "Compressed voice in integrated services frame relay networks." Ottawa, 1992.

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