National Repository of Grey Literature 8 records found  Search took 0.00 seconds. 
Testing Performance Parameters of SIP VoIP Using Spirent Test Center
Slivka, Miroslav ; Polčák, Libor (referee) ; Matoušek, Petr (advisor)
This work deals with benchmarking of SIP VoIP networks by Spirent TestCenter device and its software application Avalanche. Results of this work show the way of using Spirent TestCenter Avalanche for SIP VoIP testing. Solution of this work involves creation of testing methodology, containing test scenarios depending on license limitations of Spirent TestCenter along with a presentation of outputs of the tests. Besides creating of tests for Spirent TestCenter there will also be presented another technologies for testing VoIP networks.
A Tool for Testing VoIP Security
Mazálek, Pavel ; Skokanová, Jana (referee) ; Matoušek, Petr (advisor)
This work is focused on the security of SIP. It describes basic principles of signaling protocol and it outlines the necessary protocols for voice data transfer. It describes some basic attacks on device working with SIP and provides examples and applications. The last chapter is devoted to descrie the program can be used for penetration testing of devices.
Wireless doorbell with voice transmission
Papež, Josef ; Fujcik, Lukáš (referee) ; Semiconductor, Radek Václavík, ON (advisor)
This diploma thesis deals with wireless doorbell realisation. The doorbell is battery-powered and supports half duplex voice transferring. The general aim is to design system circuitry, PCB and to create microcontroller firmware.
Optimisation of a Voice Transmission in Communication Networks
Novák, David ; Polívka, Michal (referee) ; Škorpil, Vladislav (advisor)
This master’s thesis deals abou the transmission of voice in communications networks. The theoretical part describes criteria for optimizing voice, such as quality of service, type of service, level of service, service type, and mean opinion score. Next I describe the Internet Protocol, comparing IPv4 and IPv6, VoIP, including security, protocols and parameters necessary for transmission. Other part is about neural networks. There are basically described the neural network, Hopfield neural network and Kohenen neural network. The research is based on a comparison of the network without ensuring the quality of service and with ensuring quality of service. Then, there are compared two types of switches. Classical switch-controlled sequentially, and switch controlled by neural networks. The overall simulation program is implemented in Opnet Modeler. The conclusion deals with the creation of laboratory tasks in this program to compare the different systems of ensuring quality of service.
Testing Performance Parameters of SIP VoIP Using Spirent Test Center
Slivka, Miroslav ; Polčák, Libor (referee) ; Matoušek, Petr (advisor)
This work deals with benchmarking of SIP VoIP networks by Spirent TestCenter device and its software application Avalanche. Results of this work show the way of using Spirent TestCenter Avalanche for SIP VoIP testing. Solution of this work involves creation of testing methodology, containing test scenarios depending on license limitations of Spirent TestCenter along with a presentation of outputs of the tests. Besides creating of tests for Spirent TestCenter there will also be presented another technologies for testing VoIP networks.
A Tool for Testing VoIP Security
Mazálek, Pavel ; Skokanová, Jana (referee) ; Matoušek, Petr (advisor)
This work is focused on the security of SIP. It describes basic principles of signaling protocol and it outlines the necessary protocols for voice data transfer. It describes some basic attacks on device working with SIP and provides examples and applications. The last chapter is devoted to descrie the program can be used for penetration testing of devices.
Optimisation of a Voice Transmission in Communication Networks
Novák, David ; Polívka, Michal (referee) ; Škorpil, Vladislav (advisor)
This master’s thesis deals abou the transmission of voice in communications networks. The theoretical part describes criteria for optimizing voice, such as quality of service, type of service, level of service, service type, and mean opinion score. Next I describe the Internet Protocol, comparing IPv4 and IPv6, VoIP, including security, protocols and parameters necessary for transmission. Other part is about neural networks. There are basically described the neural network, Hopfield neural network and Kohenen neural network. The research is based on a comparison of the network without ensuring the quality of service and with ensuring quality of service. Then, there are compared two types of switches. Classical switch-controlled sequentially, and switch controlled by neural networks. The overall simulation program is implemented in Opnet Modeler. The conclusion deals with the creation of laboratory tasks in this program to compare the different systems of ensuring quality of service.
Wireless doorbell with voice transmission
Papež, Josef ; Fujcik, Lukáš (referee) ; Semiconductor, Radek Václavík, ON (advisor)
This diploma thesis deals with wireless doorbell realisation. The doorbell is battery-powered and supports half duplex voice transferring. The general aim is to design system circuitry, PCB and to create microcontroller firmware.

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