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Proprietary VoIP protocols of PBX manufacturers
Bělík, David ; Daněček, Vít (referee) ; Šilhavý, Pavel (advisor)
This thesis focuses on the analysis of proprietary Voice over IP protocols. The first part describes the principles and VoIP technology types. The next section describes proprietary protocols Panasonic IP-PT from Panasonic Corporation and Siemens CorNet-IP from Siemens Corporation. Protocols which are being used in these systems are listed here. Further there is being described the process of registration of terminals to central province. Subsequently calling process and particular terminal functions including packet analysis are being decoded in detail. In conclusion H.323 and MGCP protocols are being compared.
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Design and Performance Analysis of Parallel Processing of SRTP Packets
Wozniak, Jan ; Zbořil, František (referee) ; Jurnečka, Peter (advisor)
Šifrování multimediálních datových přenosů v reálném čase je jednou z úloh telekomunikační infrastruktury pro dosažení nezbytné úrovně zabezpečení. Rychlost provedení šifrovacího algoritmu může hrát klíčovou roli ve velikosti zpoždění jednotlivých paketů a proto je tento úkol zajímavým z hlediska optimalizačních metod. Tato práce se zaměřuje na možnosti paralelizace zpracování SRTP pro účely telefonní ústředny s využitím OpenCL frameworku a následnou analýzu potenciálního zlepšení.
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Optimization of Integration of Promax Training Equipment into Education
Vaško, Petr ; Číka, Petr (referee) ; Škorpil, Vladislav (advisor)
This thesis is focused on familiarization with the instructional device PROMAX, which is an illustrative example of functioning of a private central telephone switchboard, including simulation of the interconnection with the central telephone switchboard. First, the completion including wiring was carried out, the followed by the initial enlivening of the laboratory equipment, and detailed familiarization with its basic functions. After obtaining the requisite knowledge of the device, a comprehensible manual with individual parts of the tutorial system described in detail was elaborated. The emphasis is placed on understanding the problems of functions of individual blocks of the telephone switchboard, the successive modules, and the principle of interconnection. In the following part of the thesis a design of the laboratory tasks for students is carried out. They are designed to practical verification of the performance of the individual blocks, their interconnection and configuration. The attachments which are a part of the thesis contain the model design of the individual laboratory tasks.
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Interurban telegraph and telephone switchboard building in Prague's part Žižkov and representation of young Czechoslovak Republic by architecture
Krausová, Terezie ; Czumalo, Vladimír (advisor) ; Šmied, Miroslav (referee)
Interurban telegraph and telephone switchboard building in Prague's part Žižkov and representation of young Czechoslovak Republic by architecture The subject matter of the bachelor thesis is the building of telegraph and telephone exchange (PBX) Žižkov (located around the streets Fibichova, Křížkovského, Kubelíkova), built based on the project of architect Bohumír Kozák in 1922-1925. Focus of the thesis will be on the analysis of the style of the building, on its exterior in the National architectural style can be seen references to the Italian Renaissance. The building will be set into context of Bohumír Kozák's work. Special attention will be given to the comparation of the building with an PBX builidng bulit in Poděbrady in 1922-1924.It will also deal with the issue of monument protection and the placement of the building into the Žižkov block building and its place in the image of the city.The study will end up with options for future rebuilding and restoring.
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Automatic telephone exchange Dejvice and problem of heritage preservation of buildings from the second half of the 20th century
Pučerová, Marie ; Czumalo, Vladimír (advisor) ; Šmied, Miroslav (referee)
The subject of bachelor thesis is an automatic telephone exchange building in Prague 6- - Dejvice, the work of architects Jindřich Malátek, Jiří Eisenreich, Václav Aulický and Jaromíra Eismann from the years 1975-1982. Analysis and interpretation of the building will the author describe within a brief outline of the telephonne exchange as an architectural matter, partly in the context of Czech architecture of the 1970s and 1980s. Not only stylistic issues with emphasis on the importace of technicism in Czech architecture will be discussed , but also contemporary practices of procurement and construction. Telephone exchange Dejvice will be compared with three buildings best representing the type of construction of the period and its destiny and transformation of the environment will be followed to the present time. The study will result in an analysis of possibilities and problems of cultural heritage protection of the building. Keywords architecture, technical building, telephone exchange, heritage preservation, Dejvice
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Optimization of Integration of Promax Training Equipment into Education
Vaško, Petr ; Číka, Petr (referee) ; Škorpil, Vladislav (advisor)
This thesis is focused on familiarization with the instructional device PROMAX, which is an illustrative example of functioning of a private central telephone switchboard, including simulation of the interconnection with the central telephone switchboard. First, the completion including wiring was carried out, the followed by the initial enlivening of the laboratory equipment, and detailed familiarization with its basic functions. After obtaining the requisite knowledge of the device, a comprehensible manual with individual parts of the tutorial system described in detail was elaborated. The emphasis is placed on understanding the problems of functions of individual blocks of the telephone switchboard, the successive modules, and the principle of interconnection. In the following part of the thesis a design of the laboratory tasks for students is carried out. They are designed to practical verification of the performance of the individual blocks, their interconnection and configuration. The attachments which are a part of the thesis contain the model design of the individual laboratory tasks.
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Proprietary VoIP protocols of PBX manufacturers
Bělík, David ; Daněček, Vít (referee) ; Šilhavý, Pavel (advisor)
This thesis focuses on the analysis of proprietary Voice over IP protocols. The first part describes the principles and VoIP technology types. The next section describes proprietary protocols Panasonic IP-PT from Panasonic Corporation and Siemens CorNet-IP from Siemens Corporation. Protocols which are being used in these systems are listed here. Further there is being described the process of registration of terminals to central province. Subsequently calling process and particular terminal functions including packet analysis are being decoded in detail. In conclusion H.323 and MGCP protocols are being compared.
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Design and Performance Analysis of Parallel Processing of SRTP Packets
Wozniak, Jan ; Zbořil, František (referee) ; Jurnečka, Peter (advisor)
Šifrování multimediálních datových přenosů v reálném čase je jednou z úloh telekomunikační infrastruktury pro dosažení nezbytné úrovně zabezpečení. Rychlost provedení šifrovacího algoritmu může hrát klíčovou roli ve velikosti zpoždění jednotlivých paketů a proto je tento úkol zajímavým z hlediska optimalizačních metod. Tato práce se zaměřuje na možnosti paralelizace zpracování SRTP pro účely telefonní ústředny s využitím OpenCL frameworku a následnou analýzu potenciálního zlepšení.
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