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Softswitch: Charging, Accounting and Billing
49,90 € *
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Softswitch is an innovative concept in the field of telecommunication and ICT, which creates new challenges and opportunities for the network operators, service providers and researchers. The migration from PSTN to NGN involves the convergence between PSTN and IP network that is a single network for voice, data and video. Softswitch performs all analysis functions, routes signalling messages and handles traffic data. So it requires an extension of existing charging collection mechanisms and billing system that is functionally intelligent and flexible, and provides fair policy towards end users. The book is designed to present the design principle and implementation concept of Softswitch. It also includes different convergence billing protocols and their interface challenges. In addition, the operational results at the end demonstrate the effectiveness of the Softswitch with billing interface. On the whole, the study has sought to explicate an integrated system for Charging, Accounting and Billing, which is capable of handling all the challenges and generating fair traffic bill.

Anbieter: Dodax
Stand: 23.01.2020
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Mobility Management Techniques for Wireless Net...
60,70 € *
ggf. zzgl. Versand

Mobility Management &amp, Route Optimization issues for Wireless Networks are presented in detail. IP-based Networks, PSTN-based Networks and ATM-based Networks backbones have been considered for developing mobility management technique. In IP-based backbone network, a route optimization scheme is proposed to improve the performance of Mobile IP having some apparent drawbacks like triangular routing problem, home agent overloading etc. An encapsulation at one- level up in the hierarchy is performed to improve the handoff delay and the simulation is carried out on NS-2 simulator. In PSTN-based backbone networks, a protocol is proposed and an analytical modeling is carried out where the location registration can be finished prior to the arrival of a MT at the new network to support the inter-system roaming. For an ATM-based backbone network, a design and prototyping of a mobility support ATM network is proposed to improve the handoff time, cell loss and call setup time. Further, an improved mobile location management for wireless ATM networks is proposed and analyzed to improve the performance in terms of number of hops required for location managements.

Anbieter: Dodax AT
Stand: 23.01.2020
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Mobility Management Techniques for Wireless Net...
59,00 € *
ggf. zzgl. Versand

Mobility Management &amp, Route Optimization issues for Wireless Networks are presented in detail. IP-based Networks, PSTN-based Networks and ATM-based Networks backbones have been considered for developing mobility management technique. In IP-based backbone network, a route optimization scheme is proposed to improve the performance of Mobile IP having some apparent drawbacks like triangular routing problem, home agent overloading etc. An encapsulation at one- level up in the hierarchy is performed to improve the handoff delay and the simulation is carried out on NS-2 simulator. In PSTN-based backbone networks, a protocol is proposed and an analytical modeling is carried out where the location registration can be finished prior to the arrival of a MT at the new network to support the inter-system roaming. For an ATM-based backbone network, a design and prototyping of a mobility support ATM network is proposed to improve the handoff time, cell loss and call setup time. Further, an improved mobile location management for wireless ATM networks is proposed and analyzed to improve the performance in terms of number of hops required for location managements.

Anbieter: Dodax
Stand: 23.01.2020
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PSTN-IP Telephony Gateway for Ensuring QoS in H...
41,10 € *
ggf. zzgl. Versand

The appearance of VoIP technology has now made feasible the use of data network for data, as well as voice communication. In this book, the protocol conversion between two different networks, packet scheduling and routing schemes for gateway selection has been introduced and also verified with Asterisk server. The recent trend for convergence of different access network technologies, market deregulation and emergence of dual-mode end-user devices allow the same destination to be reached by alternative paths and interfaces.Providing a good QoS in heterogeneous networks for irregular traffic flows remains a significant challenge. One of the difficult tasks is that of gateway location, also known as gateway selection, path selection, gateway discovery, and gateway routing. The main objective of this book is to design and develop a PSTN-IP Telephony Gateway (PITG) model and to assist routing packets while ensuring minimal call blocking probability with respect to call arrival rate or load, to increase the overall performance of the system. Specifically, the primary focus is on the development, analysis and optimization of the PITG model and evaluation of a gateway selection algorithm.

Anbieter: Dodax AT
Stand: 23.01.2020
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MAIDS for VoIP
70,00 € *
ggf. zzgl. Versand

Compared to traditional (PSTN) voice networks, a Voice over Internet Protocol network is a convergence of a signaling network and a data network using Internet Protocol (IP). The use of shared media by VoIP systems opens the door to some uncertainty as to the source of a call. While in the traditional voice networks one has to tap into a specific circuit to eavesdrop, in an IP network any equipment connected to the target LAN can identify, store and playback the VoIP packets that traverse that LAN. An unprotected, unauthenticated IP network makes VoIP susceptible to hostile use, such as call hijacking, connection tear down, denial of service, or sending computer viruses over the network. In this work, we perform a series of attacks against a VoIP application, and prove that they succeed with nothing more than a couple of identity tokens captured from the network traffic as prerequisites. We then design an Intrusion Detection System implementing a gradual attack-response procedure, destined to inform and protect the End-Users of the Application Under Test.

Anbieter: Dodax AT
Stand: 23.01.2020
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Doro PhoneEasy 311c
28,90 € *
zzgl. 5,95 € Versand

Doro PhoneEasy 311c, weiß: Schnurgebundenes Telefon mit großen Tasten inkl. Direktwahl- und Kurzwahlfunktion, HAC (Hörgerätekompatibilität) und optischer Anrufsignalisierung für eingehende Anrufe. Produktmerkmale: * große Tasten für leichtes Wählen * 3 Kurzwahlspeicher * einfach anzupassende Hörerlautstärke Geniales Design und Funktionalität: * Leicht verständlich Wir bei Doro legen besonderen Wert darauf, leicht verständliche Produkte zu entwickeln. Alle Funktionen und Menüs sind einfach zu erfassen und unkompliziert in ihrer Bedienung. * Kurzwahl Uns bei Doro gefällt die Kurzwahlfunktion so gut, dass nahezu alle unsere Telefone mit einem Kurzwahlspeicher ausgestattet sind, selbst unsere Mobiltelefone. * Optische Anrufsignalisierung Es gibt mehr als nur eine Möglichkeit, um Ihre Aufmerksamkeit zu erregen. Eine optische Anrufanzeige weist deutlich sichtbar auf eingehende Anrufe hin. Spezifikationen: * Wahlwiederholungsspeicher: 1 * Direktwahltasten: 3 * Kurzwahlspeicher: 9 * Monophone Ruftöne: 3 * visuelle Anrufanzeige * Klingelton abstellbar * Hörgerätekompatibel * Lautstärkestufen: 3 * Wandmontagefähig * kann direkt ans Analog-Festnetz (PSTN) angeschlossen werden.

Anbieter: Computeruniverse
Stand: 23.01.2020
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Doro PhoneEasy 311c schwarz
28,90 € *
zzgl. 5,95 € Versand

Doro PhoneEasy 311c, schwarz: Schnurgebundenes Telefon mit großen Tasten inkl. Direktwahl- und Kurzwahlfunktion, HAC (Hörgerätekompatibilität) und optischer Anrufsignalisierung für eingehende Anrufe. Produktmerkmale: * große Tasten für leichtes Wählen * 3 Kurzwahlspeicher * einfach anzupassende Hörerlautstärke Geniales Design und Funktionalität: * Leicht verständlich Wir bei Doro legen besonderen Wert darauf, leicht verständliche Produkte zu entwickeln. Alle Funktionen und Menüs sind einfach zu erfassen und unkompliziert in ihrer Bedienung. * Kurzwahl Uns bei Doro gefällt die Kurzwahlfunktion so gut, dass nahezu alle unsere Telefone mit einem Kurzwahlspeicher ausgestattet sind, selbst unsere Mobiltelefone. * Optische Anrufsignalisierung Es gibt mehr als nur eine Möglichkeit, um Ihre Aufmerksamkeit zu erregen. Eine optische Anrufanzeige weist deutlich sichtbar auf eingehende Anrufe hin. Spezifikationen: * Wahlwiederholungsspeicher: 1 * Direktwahltasten: 3 * Kurzwahlspeicher: 9 * Monophone Ruftöne: 3 * visuelle Anrufanzeige * Klingelton abstellbar * Hörgerätekompatibel * Lautstärkestufen: 3 * Wandmontagefähig * kann direkt ans Analog-Festnetz (PSTN) angeschlossen werden.

Anbieter: Computeruniverse
Stand: 23.01.2020
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PSTN-IP Telephony Gateway for Ensuring QoS in H...
39,90 € *
ggf. zzgl. Versand

The appearance of VoIP technology has now made feasible the use of data network for data, as well as voice communication. In this book, the protocol conversion between two different networks, packet scheduling and routing schemes for gateway selection has been introduced and also verified with Asterisk server. The recent trend for convergence of different access network technologies, market deregulation and emergence of dual-mode end-user devices allow the same destination to be reached by alternative paths and interfaces.Providing a good QoS in heterogeneous networks for irregular traffic flows remains a significant challenge. One of the difficult tasks is that of gateway location, also known as gateway selection, path selection, gateway discovery, and gateway routing. The main objective of this book is to design and develop a PSTN-IP Telephony Gateway (PITG) model and to assist routing packets while ensuring minimal call blocking probability with respect to call arrival rate or load, to increase the overall performance of the system. Specifically, the primary focus is on the development, analysis and optimization of the PITG model and evaluation of a gateway selection algorithm.

Anbieter: Dodax
Stand: 23.01.2020
Zum Angebot
MAIDS for VoIP
68,00 € *
ggf. zzgl. Versand

Compared to traditional (PSTN) voice networks, a Voice over Internet Protocol network is a convergence of a signaling network and a data network using Internet Protocol (IP). The use of shared media by VoIP systems opens the door to some uncertainty as to the source of a call. While in the traditional voice networks one has to tap into a specific circuit to eavesdrop, in an IP network any equipment connected to the target LAN can identify, store and playback the VoIP packets that traverse that LAN. An unprotected, unauthenticated IP network makes VoIP susceptible to hostile use, such as call hijacking, connection tear down, denial of service, or sending computer viruses over the network. In this work, we perform a series of attacks against a VoIP application, and prove that they succeed with nothing more than a couple of identity tokens captured from the network traffic as prerequisites. We then design an Intrusion Detection System implementing a gradual attack-response procedure, destined to inform and protect the End-Users of the Application Under Test.

Anbieter: Dodax
Stand: 23.01.2020
Zum Angebot