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undergraduate thesis
Odabir i predodabir operatera
2020. urn:nbn:hr:200:784261
Kelava, Tomislav
Josip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek
Department of Communications
Laboratory for High Frequency Measurements

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Kelava, T. (2020). Odabir i predodabir operatera (Undergraduate thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek. Retrieved from https://urn.nsk.hr/urn:nbn:hr:200:784261

Kelava, Tomislav. "Odabir i predodabir operatera." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2020. https://urn.nsk.hr/urn:nbn:hr:200:784261

Kelava, Tomislav. "Odabir i predodabir operatera." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2020. https://urn.nsk.hr/urn:nbn:hr:200:784261

Kelava, T. (2020). 'Odabir i predodabir operatera', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, accessed 25 April 2025, https://urn.nsk.hr/urn:nbn:hr:200:784261

Kelava T. Odabir i predodabir operatera [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek; 2020 [cited 2025 April 25] Available at: https://urn.nsk.hr/urn:nbn:hr:200:784261

T. Kelava, "Odabir i predodabir operatera", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, Osijek, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:200:784261

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Metadata
TitleOdabir i predodabir operatera
Title (english)Carrier Selection and Carrier Preselection
AuthorTomislav Kelava
MentorAnđelko Lišnjić (mentor)
Committee memberAnđelko Lišnjić (predsjednik povjerenstva)
Committee memberVanja Mandrić Radivojević (član povjerenstva)
Committee memberSnježana Rimac-Drlje (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek
(Department of Communications)
(Laboratory for High Frequency Measurements)
Osijek
Defense date and country2020-10-07, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Telecommunications and Informatics
Abstract
Tema ovog završnog rada je bila pobliže objasniti što znači odabir, a što predodabir operatera, odnosno koje sve mogućnosti korisnici imaju za ostvarivanje govornog telekomunikacijskog prometa te detaljno obraditi najčešće korištene metode implementacije sa signalizacijskog aspekta. Korisnici ako žele, imaju mogućnost za svaki poziv birati operatera preko kojeg žele uputiti poziv, a to im omogućuje usluga odabir operatera. Ako se ipak odluče da ne žele cijelo vrijeme unositi četveroznamenkasti kod za usmjeravanje poziva, mogu odabrati uslugu predodabira operatera te će taj unos za njih obavljati centrala. Da bi se poziv uspostavio, signal prolazi kroz nekoliko pristupnih točki u mreži te kroz više protokola. Najčešća implementacija poziva je kroz ISUP i SIP protokole. Oba protokola imaju svoje signalizacijske poruke s kojima možemo pratiti cijeli poziv, od podizanja slušalice pa do spuštanja, te nam one pomažu da vidimo je li poziv protekao u redu ili je negdje nastao neki problem. Ako dođe do problema protokoli će poslati poruku greške s određenom oznakom koje su dobro poznate i definirane u tim protokolima. Povećanom potražnjom za telefonima i mobitelima i njihovim naglim razvojem i protokoli su se morali prilagoditi i razvijati, pa nam je tako danas omogućena komunikacija s više različitih uređaja u isto vrijeme u istom govornom kanalu, što to davno prije nije bio slučaj.
Abstract (english)
The topic of this final labor was to explain in more detail what the carrier selection and pre-selection service means, ie what are all the possibilities for users to achieve voice telecommunication traffic and to detail the most commonly used implementation methods from the signaling aspect. Users, if they wish, have the option to select the carrier through which they want to make a call for each call, and this is enabled by the carrier selection service. However, if they decide that they do not want to enter the four-digit call routing code all the time, they can choose carrier pre-selection service and this entry will be performed for them by the exchange. To establish a call, the signal passes through several access points in the network and through several protocols. The most common implementation of calls is through ISUP and SIP protocols. Both protocols have their own signaling messages with which we can monitor the entire call, from picking up the handset to hanging up, and they help us see if the call went well or if there was a problem somewhere. If a problem occurs the protocols will send an error message with a specific label that is well known and defined in those protocols. With the increased demand for telephones and mobile phones and their rapid development, protocols had to be adapted and developed, so that today we are able to communicate with several different devices at the same time in the same voice channel, which was not the case a long time ago.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:200:784261
Study programmeTitle: Professional study programme of Electrical Engineering; specializations in: Power Engineering, Automation, Informatics
Course: Informatics
Study programme type: professional
Study level: undergraduate
Academic / professional title: stručni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike (stručni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-12-02 13:20:32