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Wiretapping and recording of telecommunications in protecting the economy
Velíšek, Roman ; Uhlík, Milan (advisor) ; Pavla, Pavla (referee)
This diploma thesis is focused on telephone tapping and recording of telecommunication traffic in order to protect the economy, according to the criminal procedural institutes: the tapping and recording of telecommunication traffic and survey on information about telecomunication traffic. These institutes are ruled by the act no. 141/1961 Coll., on criminal court proceedings (criminal code), as amended. The aim of this work is to investigate the effectiveness of the use of eavesdropping and records of telecommunication operations, carried out for a longer period in accordance with the criminal procedure code, international treaties and the Police of the Czech Republic in order to protect the individual areas of the economy.
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The open mobile phone platform
Malinčík, Ondrej ; Šteffan, Pavel (referee) ; Macháň, Ladislav (advisor)
The aim of this work is construction of mobile phone which can be build using com- ponents that are widely available. The concept allows control of mobile communication in GSM network on AT commands level. Energy saving is emphasised and alternative power source using solar cell is examined. Manufacturing data and docummentation is available for user.
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Possibilities of connecting the Asterisk softswitch to the 4th generation PBX
Halamík, Zdeněk ; Krajsa, Ondřej (referee) ; Šilhavý, Pavel (advisor)
This master’s thesis dissertate the possibilities of the linkage between Asterisk softswitch and the 4th generation private branch exchange. This should create a new generation’s network, so-called NGN, by the convergence of existing telecommunication networks with an IP computer network. This master’s thesis is divided into several chapters. In introduction is described the evolution of the private branch exchanges as well as the principles of the voice digitizing, codecs and signaling commonly used in both TDM and VoIP networks. The main aim of this project is the configuration of Asterisk software exchange for connection with PBX Alcatel 4400 as well as public phone network PSTN. Another goal of this master’s thesis was the configuration of Alcatel PBX and diagnostics of CCS and CAS signaling on E1 interface. In conclusion there are summarized advantages of NGN networks and their utilization in the future.
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