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Relevant bibliographies by topics / PSTN (Public Switched Telephone Network)

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Academic literature on the topic 'PSTN (Public Switched Telephone Network)'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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Journal articles on the topic "PSTN (Public Switched Telephone Network)"

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Kim, Hak Ju. "Suitability of IP telephony in the Public Switched Telephone Network (PSTN)." International Journal of Business Data Communications and Networking 3, no. 3 (July 2007): 39–56. http://dx.doi.org/10.4018/jbdcn.2007070103.

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Zhang, Xiao Qing, and Li Juan Chen. "Communication Software Design of Remote Monitoring System for Motor Excitation Parameters Based on PSTN." Key Engineering Materials 480-481 (June 2011): 1018–22. http://dx.doi.org/10.4028/www.scientific.net/kem.480-481.1018.

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Based on the remote maintenance of motor exciation, this paper discusses the function design and solution method of communication software which is used in remote monitoring system of motor exciation. It mainly introduces the process of data transmission founded on the Public Switched Telephone Network (PSTN) and key problems of the implementation of communication MSComm control in VC++.

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Atmadja, Martono Dwi. "Single Board Computer Applications as Multi-Server VoIP." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (July 15, 2021): 1023–28. http://dx.doi.org/10.22214/ijraset.2021.36512.

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Telecommunication technology is developing along with information technology and several innovations in several audio and data transmission and reception techniques. Innovation and communication technology are hoped to be able to create efficiencies in regards to time, equipment, and cost. The Public Switched Telephone Network (PSTN) telephone technology has experienced integration towards communication using Internet Protocol (IP) networks, better known as Voice over Internet Protocol (VoIP). VoIP Technology transmits conversations digitally through IP-based networks, such as internet networks, Wide Area Networks (WAN), and Local Area Networks (LAN). However, the VoIP cannot fully replace PSTN due to several weaknesses, such as delay, jitter, packet loss, as well as security and echo. Telephones calls using VoIP technology are executed using terminals in the form of computer devices or existing analogue telephones. The benefit of VoIP is that it can be set in all ethernet and IP addresses. Prefixes can be applied for inter-server placements as inter-building telephone networks without the addition of inefficient new cables on single board computers with Elastix installed. Prefix and non-prefix analysis on servers from single board computers can be tested using QoS for bandwidth, jitter, and packet loss codec. The installation of 6 clients, or 3 simultaneous calls resulted in a packet loss value in the prefix Speex codex of 2.34%. The bandwidth in the prefix PCMU codec has an average value of 82.3Kbps, and a non-prefix value of 79.3Kbps, in accordance to the codec standards in the VoIP. The lowest jitter was found in the non-prefix PCMU codec with an average of 51.05ms, with the highest jitter for the prefix Speex codec being 314.65ms.

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Lu, Xiao Lin. "Design and Implementation of Remote PSTN-Based Data Acquisition System." Advanced Materials Research 108-111 (May 2010): 27–32. http://dx.doi.org/10.4028/www.scientific.net/amr.108-111.27.

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The Data Acquisition Systems (DAS) are the basis for building monitoring tools that enable the supervision of local and remote systems. A variety of communications and data transmission system has been adopted DAS to exchange information. The special-purpose DAS has a very important practical value. This paper presents the circuit and system design for a new micro type of remote data acquisition system. It consists of an integrated circuit, a phone dialer, modulation devices, central processing unit, buttons, input devices and display devices. The system and circuit design has been described in detail. It can be used to transmit data through the public switched telephone network. It is suitable for constructing a mini scale communication network at low cost for data acquisition through the PSTN.

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Bennett, Devon, Hamid Jahankhani, Mohammad Dastbaz, and Hossein Jahankhani. "A Secure Hybrid Network Solution to Enhance the Resilience of the UK Government National Critical Infrastructure TETRA Deployment." International Journal of Information Security and Privacy 5, no. 1 (January 2011): 1–13. http://dx.doi.org/10.4018/jisp.2011010101.

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In developed economies, electronic communication infrastructures are crucial for daily public, private, and business interactions. Cellular systems are extensively used for business communications, private interaction, and in some cases, public information services, via such uses as mass SMS messaging. The Public Switched Telephone Network (PSTN) is at the core of all communications platforms. It was used primarily for voice communication purposes, but with current technological advances, this platform has been transformed from a voice to voice interface to a web enabled multimedia platform that provides commercial, business, and e-commerce services to the public. In response to the September 11, 2001, terrorist acts in New York City, the UK government introduced a policy of separating and transferring all emergency communication traffic from the PSTN to a digital public safety network based on the TETRA architecture. This paper extends the utilisation of the TETRA deployment by discussing a secure MANET hybrid solution for use in extreme situations as a short/mid-term EMS organisational communication platform for emergency and rescue operations.

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Yulianto, Budi. "Analisis Korelasi Faktor Perilaku Konsumen terhadap Keputusan Penggunaan Teknologi Komunikasi Voip." ComTech: Computer, Mathematics and Engineering Applications 5, no. 1 (June 30, 2014): 236. http://dx.doi.org/10.21512/comtech.v5i1.2619.

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The advancement of communication technology that is combined with computer and the Internet brings Internet Telephony or VoIP (Voice over Internet Protocol). Through VoIP technology, the cost of telecommunications in particular for international direct dialing (IDD) can be reduced. This research analyzes the growth rate of VoIP users, the correlation of the consumer behavior towards using VoIP, and cost comparisons of using telecommunication services between VoIP and other operators. This research is using descriptive analysis method to describe researched object through sampling data collection for hypothesis testing. This research will lead to the conclusion that the use of VoIP for international area will be more advantageous than the use of other operators of GSM (Global System for Mobile), CDMA (Code Division Multiple Access), or the PSTN (Public Switched Telephone Network).

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Belitsky, A. M., R. R. Ivanenko, A. V. Besedin, and A. Y. Klochkov. "CUSTOMER ACCESS NETWORKING ON THE BASIS OF ETHERNET FTTH, PON TECHNOLOGIES." Proceedings of the Southwest State University 21, no. 1 (February 28, 2017): 8–15. http://dx.doi.org/10.21869/2223-1560-2017-21-1-8-15.

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Nowadays, one of the trends of information and communication networks development is the provision within the shortest time of a larger number of telecommunication services to network users. Currently, connection of subscribers to xDSL communication channels provided by public switched telephone networks (PSTN) is widespread. Providers of classic telephony make active use of these networks due to the low cost of the connection of a subscriber. An obvious disadvantage of this connection type is the limited data transfer rate. Some Internet providers rapidly develop ETTH (Ethernet To The Home) networks. The advantage of ETTH networks is the targeting of the delivery of communication services to subscribers. One of the disadvantages is the operation of a network at the Ethernet level with all typical for this protocol features. The practice of optical networking has existed for many years; however, the basic approach to optical networking is based on the use of active equipment from the access node to users. PON-based (Passive Optical Network) FTTH architecture (Fiber To The Home) is as a rule, compatible with the Ethernet Protocol. The article shows the advantages of the deployment of PON-based FTTH networks, in particular, saving of fiber-optic lines in the area from the optical splitters to the Central telephone exchange or access point by using relevant ports. The article provides the description of access networks architecture applying Ethernet FTTH and PON technologies, and also discusses the prospects for further development of the above mentioned networks.

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Luhach, Ravindra, Chandra K. Jha, and Ashish K. Luhach. "Performance Analysis of QMF Filter Bank For Wireless Voip in Pervasive Environment." Recent Patents on Computer Science 12, no. 4 (August 19, 2019): 349–53. http://dx.doi.org/10.2174/2213275911666181018101737.

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Background: Voice over Internet Protocol (VoIP) has emerged as one of the most significant technology in the field of communication and evolved as a substitute to the conventional communication method as the Public Switched Telephone Network (PSTN). Along with the advantages such as scalability and security, VoIP has some threats such as voice quality and interference that must be dealt with. The voice quality in VoIP is degraded when transmitted over a computer network due to delay, jitter and packet loss etc. Packet loss is one of major reasons for the signal quality degradation. Objective: In this research article, Quadrature Mirror Filter Bank (QMF) has been implemented in wireless VoIP system to enhance the quality of the signals transmitted. Results: The performance has been evaluated under varying network conditions of packet loss. Conclusion: Significant improvement has been observed in the quality of VoIP signal.

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Heegaard, Poul E. "Empirical Data from Mobile and IP Telephony." Journal of Communications Software and Systems 4, no. 1 (March 20, 2008): 54. http://dx.doi.org/10.24138/jcomss.v4i1.237.

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Over the recent years enormous changes in the telecommunication services, techniques, regulations and markets have taken place. However, even with many new exciting services the telephony service is still popular. This paper provides empirical traffic data and observations of telephony traffic patterns in mobile and IP telephony. They are presented and compared with old telephony patterns from Public Switched Telephone Networks (PSTN). The question is whether the characterization of telephony traffic should be reconsidered because new technology and markets might have changed the service and usage. How is the telephony usage patterns influenced by technology changes from fixed to mobile phones, changes in quality from fixed-line phone to mobile and IP telephone, changes in tariffs from usage based to flat-rate subscriptions, and appearance of alternative message based communication means? This paper presents a comparison between recent mobile and IP telephony measurements and telephony measurement obtained nearly four decades ago. The traffic patterns are compared and significant changes in the daily and weekly traffic profiles are observed. In particular, the profile of international calls has significantly changed and does not resemblance any of the standard traffic profiles from ITU E.523. The busy hour call holding times are fitted a log-Normal distribution for domestic and Hyper Exponential for international calls. Furthermore, the average call holding times show significant variations over the day in flat-rate subscriptions. Finally, the results indicate that the Short Message Service (SMS) seems to serve as a supplement to phone calls, in particular in the evenings, which might change call holding time distribution and traffic intensities.

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FARAG, EMAD N., MOHAMED I. ELMASRY, MOHAMED N. SALEH, and NABIL M. ELNADY. "A TWO-LEVEL HIERARCHICAL MOBILE NETWORK: STRUCTURE AND NETWORK CONTROL." International Journal of Reliability, Quality and Safety Engineering 03, no. 04 (December 1996): 325–51. http://dx.doi.org/10.1142/s0218539396000211.

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The increase in demand for mobile telecommunication systems, and the limited bandwidth allocated to these systems, have led to systems with smaller cell dimensions, which in turn led to the increase of control messages. In order to prevent controller bottle necks, it is desirable to distribute the network control functions throughout the network. To satisfy this requirement, a mobile network structure characterized by its hierarchical and decentralized network control is presented in this paper. The area served by the mobile system is divided into regions, and the regions are further divided into cells. Each cell is served by a base station, each base station is connected to a regional network through a base station interface unit (BIU). Each region has its own regional network. Connected to each regional network are the cellular controller, the home database, the visitor database, the trunk interface unit (TIU) and the gateway interface unit (GIU). The TIU connects the regional network to the public switched telephone network (PSTN). The GIU connects the regional network to other regional networks through the gateway network. This architecture distributes the network control functions among a large number of processing elements, thus preventing controller bottle necks — a problem faced by centralized controlled systems. The information and network control messages are transferred in the form of packets across this network. Processes inherent to the operation of this network structure are illustrated and discussed. These processes include the location update process, the setting up of a call, the handoff process (both the intra-region handoff process and the inter-region handoff process are considered), and the process of terminating a call.

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Dissertations / Theses on the topic "PSTN (Public Switched Telephone Network)"

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Bajaj, Garima. "A Pre and Post 9-11 Analysis of SS7 Outages in the Public Switched Telephone Network." Ohio University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1171294573.

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Larsson, Josephine, and Ida Waller. "IP telephony : Future investment or risk assessment." Thesis, Blekinge Tekniska Högskola, Avdelningen för för interaktion och systemdesign, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2379.

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The market for IP telephony has increased over the years, more organizations integrate this technology with their existing networks. The advantages with IP telephony are the possibility to integrate different networks and transfer voice, data and video. However, the technology does not differ from other new technologies when it comes to handling security problems. The risks may increase when voice and data are transferred in the same network. Therefore it is important to elucidate the security aspects for IP networks. This thesis evaluates the technology by performing a comparison between traditional telephony and IP telephony in order to analyze the maintenance and security aspects of these two technologies. The comparison is based on the security services, authentication, integrity, confidentiality, non-repudiation and availability since these are the fundamental security aspects of IP telephony according to the authors. The result of the comparison indicates that IP telephony fulfils the most important security services, i.e. authentication, integrity and confidentiality. The PSTN (Public Switched Telephone Network) is seen as a secure network, because it is closed, e.g. only the operator has access.

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Almkvist, Magnus, and Marcus Wahren. "Preserving Integrity inTelecommunication Networks Opened bythe Parlay Service Interface." Thesis, KTH, Mikroelektronik och Informationsteknik, IMIT, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-93210.

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This Master’s Thesis in Electrical Engineering concerns the introduction of a Parlay gateway in Skanova’s public circuit switched telephone network, what network integrity problems this brings, and how to preserve the integrity of the network. There is a rising demand from the market on Skanova to be able to offer integrated and useful services via their network. Examples of such services are Web Controlled Call Forwarding and Virtual Call Centres. Until now, these services have been implemented with the Intelligent Network concept which is a technology for concentrating the service logic in the telephone network to centralised service platforms within the network operator’s domain. Developing new services in this environment is expensive and therefore, Skanova wants to open the network for third party service providers. The opening of the network is enabled by the introduction of a gateway implementing the open service interface Parlay. The crucial point when opening the network for third party service providers is to maintain the integrity of the network. Parlay is an object oriented Application Programming Interface that enables a third party service access to core network resources in a controlled manner. The authors’ definition of network integrity is: “the ability of a network to steadily remain in a safe state, while performing according to the expectations and specifications of its owner, i.e. delivering the expected functionality and providing means to charge for utilised network resources”. The thesis describes a few services implemented via the Parlay interface and points out examples of activities in these services that may jeopardise the integrity of the network. The described activities belong to one of the two categories: Call Control Functionality or Lack of Charging Instruments. The thesis also describes two important methods for addressing encountered integrity problems. The methods are: Parlay Service Level Agreement and Policy Management.</p> Finally, the solutions are compared and the conclusion is that Policy Management is a conformable and flexible method for addressing lots of integrity problems and that these are important qualities, since new integrity problems will arise all the time.

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Wärmegård, Erik. "Intelligent chatbot assistant: A study of integration with VOIP and Artificial Intelligence." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-42693.

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Development and research on Artificial Intelligence have increased during recent years, and the field of medicine is not excluded as a target audience for this top modern technology. Despite new research and tools in favor of medical care, the staff is still under heavy workloads. The goal of this thesis is to analyze and propose the possibility of a chatbot that aims to ease the pressure on the medical staff. To provide a guarantee that patients are being monitored. With Artificial Intelligence, VOIP, Natural Language Processing, and web development, this chatbot can communicate with a patient, which will act as an assistant tool that conducts preparatory work for the medical staff. The system of the chatbot is integrated through a web application where the administrator can initiate call and store clients onto the database. To ascertain that the system operates in real-time, several tests have been carried out to tests concerning the latency between subsystems and the quality of service.
I utvecklingen av intelligenta system har sjukvården etablerat sig som en stor målgrupp. Trots avancerade tekniker så är sjukvården fortfarande under tung belastning. Målet för detta examensarbete är att undersöka möjligheten av en chatbot vars syfte är att lätta på arbetsbelastningen hos sjukvårdspersonalen och samtidigt erbjuda en garanti för att patienter får den tillsyn och återkoppling de behöver. Med hjälp av Artificiell Intelligens, VOIP, Natural Language Processing och webbutveckling kan denna chatbot kommunicera med patienten. Chatboten agerar som ett assisterande verktyg som står för ett förarbete i beslutstagandet för sjukvårdspersonal. Ett systemsom inte bara ger praktisk nytta utan också ett främjande av den utveckling som Artificiell Intelligens gör inom sjukvården. Systemet administreras genom en hemsida som kopplar samman de flera olika komponenterna. Här kan en administratör initiera samtal och spara klienter som ska ringas till databasen. För att kunna fastställa att systemet opererar i realtid har görs flertalet prestandatester avseende både tidsfördröjningar och samtalskvalité.

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Shyirambere, Aimee S. "A Reliability and Survivability Analysis of US Local Telecommunication Switches that Experience Frequent Outages." Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1365724373.

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Lerjebo, Linus, and Johannes Hägglund. "Intelligent chatbot assistant: A study of Natural Language Processing and Artificial Intelligence." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-42691.

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The development and research of Artificial Intelligence have had a recent surge in recent years, which includes the medical field. Despite the new technology and tools available, the staff is still under a heavy workload. The goal of this thesis is to analyze the possibilities of a chatbot whose purpose is to assist the medical staff and provide safety for the patients by guaranteeing that they are being monitored. With the use of technologies such as Artificial Intelligence, Natural Language Processing, and Voice Over Internet Protocol, the chatbot can communicate with the patient. It will work as an assistant for the working staff and provide the information from the calls to the medical staff. With the answers provided from the call, the staff will not be needing to ask routine questions every time and can provide help more quickly. The chatbot is administrated through a web application where administrators can initiate calls and add patients to the database.

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Spencer, Logan Lemuella C. "Changing from the silo model to the horizontal layers model in public policy regulations : the implications and potential for the telecommunications industry /." Thesis, Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-11282005-192311/.

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Machethe, Thabo. "A Consumer Premises End User Interface for OSA/Parlay Applications." Thesis, 2007. http://hdl.handle.net/10539/2038.

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Student Number : 9812990V - MSc project report - School of Electrical Engineering - Faculty of Engineering and the Built Environment
The NGN is a multi-service network which inter-works with the Public Switched Telephone Network (PSTN), the voice network and the data network provided by Internet. Through network independent APIs such as OSA-Parlay, the NGN slowly migrates and converges Telecoms and IT networks, voice and Internet, into a common packet infrastructure. The OSA/Parlay group defines a softswitch architecture which provides network independent APIs or SCFs that enable cross network application development The Parlay softswitch provides connectivity to underlying transport networks for application providers. The standard specifies the interaction between application providers and the softswitch. However, the standard does not specify an interface to regulate the interaction between service providers and the consumer/end user domain. This means that applications housed in the service provider domain have no defined interfaces to manage service delivery to the consumer domain. For most service providers, the lack of a non-standardized API set impedes efforts to decrease application creation and deployment time. This research investigates the design and implementation of a standard consumer interface which can be used by application providers within an OSA/Parlay system to deliver service content to end users. The main objectives with regard to the functionality provided by the interface include the integration of facilities which will assist application providers to manage end user access and authentication (to enable users to establish a secure context for service usage), subscription (to handle the subscription life cycle), and service usage management (to enable the initiation and termination of services). The TINA-Consortium (TINA-C) has developed a service architecture to support the creation and provisioning of services in the NGN. The TINA architecture offers a comprehensive set of concepts and principles that can be used in the design of NGN services. The architecture consists of a set of reusable and interoperable service components encapsulating a rich and well defined set of APIs aimed at supporting the interaction between application providers and consumers. TINA’s session concepts, information structures, interfaces and service components can be used to support the design of a consumer premises end user interface for OSA/Parlay. This research also aims to explore the feasibility of using the TINA API within an OSA/Parlay system to support consumer domain service delivery. In order to implement the consumer interface for Parlay applications, the ability of the TINA service architecture to provide Access and Authentication management; Subscription and Profile management; and Service Usage management was investigated. The report documents the design and implementation of an OSA/Parlay consumer interface utilizing TINA service components and interfaces.

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Καρποδίνης, Πολυχρόνης. "Υλοποίηση ενός SIP user agent στον δικτυακό επεξεργαστή Intel IXP 425." Thesis, 2006. http://nemertes.lis.upatras.gr/jspui/handle/10889/1416.

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Θα περιγράψουμε τις βασικές λειτουργίες ενός VoIP δικτύου, τα συστατικά του μέρη, καθώς και τα πρωτόκολλα που είναι υπεύθυνα για την εγκατάσταση, τον έλεγχο και τον τερματισμό μιας VoIP υπηρεσίας-συνομιλίας. Τα πρωτόκολλα αυτά ονομάζονται πρωτόκολλα σηματοδοσίας. Τα πρωτόκολλα σηματοδοσίας για VoIP εφαρμογές και ιδιαίτερα το πρωτόκολλο SIP (Session Initiation Protocol) είναι το βασικό θέμα της παρούσας εργασίας. Συγκεκριμένα, έγινε ανάπτυξη ενός SIP User Agent, το λογισμικό του οποίου θα εκτελείται στο δικτυακό επεξεργαστή IXP425 της Intel, μαζί με τα απαραίτητα πρωτόκολλα για την κωδικοποίηση-αποκωδικοποίηση και μετάδοση δειγμάτων φωνής σε μορφή πακέτων δεδομένων. Το αποτέλεσμα αναμένεται να είναι ένα ολοκληρωμένο προϊόν (VoIP phone) για την πραγματοποίηση VoIP κλήσεων.
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Tseng, Ching-Chi, and 曾清奇. "Interworking of Powerline Home Automation Network with Public Switched Telephone Network." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/52621341430822515536.

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碩士
國立中正大學
電機工程研究所
91
In general houses nowadays, there are some power and telephone infrastructures already installed. In order to minimize cost, we can have power-lines and phone-lines as the transmission medium in the Home Automation Network. In this thesis, we will integrate mainly the power-line media with telephones and PCs to construct a whole control system. First, this thesis is to apply the low-cost 8-bit micro-controller to design and implement the power-line distributed system architecture. Then, we complete the telephone adapter circuit design and link the design up with the power-line control system. User can monitor and control home appliances via voice response by telephone, no matter where they are. To be used more conveniently, the system has several user interfaces including keyboard on the telephone adapter and telephone or PC remote control. The communication between transmitters and receivers is to send and to receive signals over the power-line wiring. By this method, we can implement the ideal of home automation.

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Books on the topic "PSTN (Public Switched Telephone Network)"

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Kravtin, Patricia D. A public good/private good framework for identifying POTS objectives for the public switched network. Columbus, Ohio (1080 Carmack Rd., Columbus 43210): The Institute, 1991.

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2

Commission, Monopolies and Mergers. Chatline and message services: A report on the provision of chatline and message services by means of the British Telecommunications public switched telephone network. London: H.M.S.O., 1989.

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Union, International Telecommunication, and International Telegraph and Telephone Consultative Committee., eds. Recommendation X.32 provisionally approved: Interface between data terminal equipment (DTE) and data circuit-terminating equipment (DCE) for terminals operating in the packet-mode and accessing a packet switched public data network through a public switched telephone network or a circuit switched public data network. Geneva: International Telecommunication Union, 1986.

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Book chapters on the topic "PSTN (Public Switched Telephone Network)"

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Weik, Martin H. "public switched telephone network." In Computer Science and Communications Dictionary, 1367. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_15047.

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Liu, Jingxuan, and Nirwan Ansari. "Public Switched Telephone Network." In Handbook of Computer Networks, 158–77. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118256053.ch11.

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Youn, Inja, Csilla Farkas, and Bhavani Thuraisingham. "Multilevel Secure Teleconferencing over Public Switched Telephone Network." In Data and Applications Security XIX, 99–113. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11535706_8.

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Bryant, P. L. "Leveraging the Public Switched Telephone Network Infrastructure for Wireless PCS." In Wireless and Mobile Communications, 243–49. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2716-9_16.

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"The public switched telephone network (PSTN)." In Practical Telecommunications and Wireless Communications, 63–83. Elsevier, 2004. http://dx.doi.org/10.1016/b978-075066271-0/50004-4.

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Stevens, Dwayne, and David T. Green. "A Strategy for Enterprise VoIP Security." In Handbook of Research on Information Security and Assurance, 458–66. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-59904-855-0.ch041.

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Voice over Internet Protocol (VoIP) networks signal an evolution in telecommunications that is accelerating the convergence of the Internet and the public switched telephone network (PSTN). Offering decreased costs and other benefits, VoIP is poised to transform telecommunications and the organizations that use them. However, some consider VoIP a security nightmare, combining the worst vulnerabilities of IP networks and voice networks. DOS attacks, crash attacks, packet spoofing, buffer overflow attacks, spam over Internet telephony (SPIT), and word injection all pose threats to commercial enterprise networks and the mission critical operations that they support.

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Stevens, Dwayne, and David T. Green. "A Strategy for Enterprise VoIP Security." In Networking and Telecommunications, 1427–36. IGI Global, 2010. http://dx.doi.org/10.4018/978-1-60566-986-1.ch093.

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Voice over Internet Protocol (VoIP) networks signal an evolution in telecommunications that is accelerating the convergence of the Internet and the public switched telephone network (PSTN). Offering decreased costs and other benefits, VoIP is poised to transform telecommunications and the organizations that use them. However, some consider VoIP a security nightmare, combining the worst vulnerabilities of IP networks and voice networks. DOS attacks, crash attacks, packet spoofing, buffer overflow attacks, spam over Internet telephony (SPIT), and word injection all pose threats to commercial enterprise networks and the mission critical operations that they support.

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Bumblis, Joseph R. "Public Communications Infrastructure Support for Telecommuting." In Telecommuting and Virtual Offices, 59–77. IGI Global, 2001. http://dx.doi.org/10.4018/978-1-878289-79-7.ch004.

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Abstract:

As the number of telecommuters grows, so does the data traffic on the Public Switched Telephone Network (PSTN) and its adjunct infrastructures. This chapter analyzes the impact of increased telecommuter-networking traffic on the PSTN and the adjunct infrastructures such as the Internet. This analysis will give readers the tools to understand the public network infrastructures and to gain insight into the networking requirements of virtual offices/work groups. By understanding the interconnection issues, decision-makers will be better able to analyze business needs related to telecommuter remote offices. In addition to understanding telecommunications technology, corporate management also will gain insight into the language of the service provider. This will help management and key decision-makers evaluate benefits of a telecommuting workforce, and negotiate with service providers for the necessary technology to support of their telecommuters.

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Datta, Debasish. "Optical Networks: An Overview." In Optical Networks, 3–22. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198834229.003.0001.

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We present an overview of optical networks, beginning with a background of today’s telecommunication networks and the roles of optical fibers therein. Next, we describe the chronology of developments in telecommunication networks starting from the days of public-switched telephone network (PSTN) offering ‘plain old telephone service’ as the basic service, followed by the divestiture of Bell Laboratories and subsequent developments of the demonopolized regime of telecommunication networks with multiple services offered to users by the same network providers. Then we describe the salient features of the two generations of optical networks for various network segments, including single-wavelength and WDM-based LANs/MANs, accesses networks, metro and long-haul networks, datacenters, and elastic optical networks. Finally, we discuss briefly the possible network architectures with the evolving optical-networking technologies. (124 words)

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Chen, Thomas M. "From Circuit Switched to IP-Based Networks." In Encyclopedia of Multimedia Technology and Networking, Second Edition, 212–17. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-014-1.ch029.

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Abstract:

The founding of the Bell Telephone System, the public switched telephone network (PSTN), has evolved into a highly successful global telecommunications system. It is designed specifically for voice communications, and provides a high quality of service and ease of use. It is supported by sophisticated operations systems that ensure extremely high dependability and availability. Over the past 100 years, it has been a showcase for communications engineering and led to groundbreaking new technologies (e.g., transistors, fiber optics). Yet it is remarkable that many public carriers see their future in Internet protocol (IP) networks, namely the Internet. Of course, the Internet has also been highly successful, coinciding with the proliferation of personal computers. It has become ubiquitous for data applications such as the World Wide Web, e-mail, and peer-to-peer file sharing. While it is not surprising that the Internet is the future for data services, even voice services are transitioning to voice over Internet protocol (VoIP). This phenomenon bears closer examination, as a prime example explaining the success of the Internet as a universal communications platform. This chapter gives a historical development of the Internet and an overview of technical and nontechnical reasons for the convergence of services.

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Conference papers on the topic "PSTN (Public Switched Telephone Network)"

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Pilgrim, Jim. "Interfacing VoIP to the Public Switch Telephone Network (PSTN)." In ITCom 2001: International Symposium on the Convergence of IT and Communications, edited by Petros Mouchtaris. SPIE, 2001. http://dx.doi.org/10.1117/12.434299.

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MacDonald, Alton, Rodolfo Cartas, and Jose Incera. "Asterisk as a Public Switched Telephone Network Gateway for an IMS test bed." In 2010 17th International Conference on Telecommunications (ICT 2010). IEEE, 2010. http://dx.doi.org/10.1109/ictel.2010.5478843.

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Arora, P., A. Acharya, S. Yadav, V. N. Ojha, and A. Sen Gupta. "A new time dissemination service with an accuracy of ± 10 ms over public switched telephone network." In 2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS). IEEE, 2017. http://dx.doi.org/10.23919/ursigass.2017.8105342.

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Reports on the topic "PSTN (Public Switched Telephone Network)"

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Johnston, A., S. Donovan, R. Sparks, C. Cunningham, and K. Summers. Session Initiation Protocol (SIP) Public Switched Telephone Network (PSTN) Call Flows. RFC Editor, December 2003. http://dx.doi.org/10.17487/rfc3666.

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Livingood, J., and R. Shockey. IANA Registration for an Enumservice Containing Public Switched Telephone Network (PSTN) Signaling Information. RFC Editor, November 2006. http://dx.doi.org/10.17487/rfc4769.

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Faynberg, I., J. Gato, H. Lu, and L. Slutsman. Service in the Public Switched Telephone Network/Intelligent Network (PSTN/IN) Requesting InTernet Service (SPIRITS) Protocol Requirements. RFC Editor, August 2002. http://dx.doi.org/10.17487/rfc3298.

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Garcia-Martin, M., and S. Veikkolainen. Session Description Protocol (SDP) Extension for Setting Audio and Video Media Streams over Circuit-Switched Bearers in the Public Switched Telephone Network (PSTN). RFC Editor, May 2014. http://dx.doi.org/10.17487/rfc7195.

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