POVZETEK - Razvoj optičnih omrežij je ključen za razvoj gigabitne družbe. Večina trenutnih dostopovnih omrežjih temelji na topologiji točka-več točk. Kljub temu da trenutni vzorci prometa kažejo na dejstvo, da tehnologija GPON zadostuje potrebam uporabnikov operaterji postopoma uvajajo tudi novejše PON tehnologije, kot je XGSPON. Za uspešno uvedbo PON tehnologij novejših generacij je pomembna interoperabilnost med proizvajalci aktivne opreme. Operater kot uporabnik opreme tukaj igra pomembno vlogo pri testiranju in uvedbi opreme v svoje omrežje. Pri testih je poleg priporočil organizacij, ki skrbijo za standarde pomembno upoštevati resnične scenarije uporabe opreme v omrežju v katerem sobivajo različni ponudniki storitev na različnih tipih uporabniške opreme. Za prehod uporabnika na novejšo tehnologijo je potrebno zamenjati ali nadgraditi obstoječo aktivno opremo in izvesti prehod vseh uporabnikov na istem razcepniku na novo opremo. Prihod 25GPON in 50GPON tehnologij bo od ponudnikov storitev zahteval premislek in odločitev katero od teh tehnologij in na kakšen način vključiti v svoje obstoječe optično distribucijsko omrežje da bo možno sobivanje v frekvenčnem prostoru. Ključna odločitev, ki jo bo operater moral sprejeti bo ali ohraniti GPON tehnologijo v omrežju in jo združiti z novimi tehnologijami ali pa se popolnoma preusmeriti na XGSPON in naprej.

ABSTRACT - The development of optical networks is key to the development of a gigabit society. Most current access networks are based on a point-to-multipoint topology. Despite the fact that current traffic patterns indicate that GPON technology meets the needs of users, operators are gradually introducing newer PON technologies, such as XGSPON. Interoperability between active equipment manufacturers is important for the successful introduction of newer generation PON technologies. The operator, as the user of the equipment, plays an important role in testing and introducing equipment into its network. In addition to the recommendations of organizations responsible for standards, it is important to consider real scenarios of equipment use in a network in which different service providers coexist on different types of user equipment. In order to transition a user to a newer technology, it is necessary to replace or upgrade the existing active equipment and transition all users on the same splitter to new equipment. The arrival of 25GPON and 50GPON technologies will require service providers to consider and decide which of these technologies and how to integrate them into their existing optical distribution network to enable coexistence in the frequency space. The key decision that the operator will have to make will be whether to maintain GPON technology in the network and combine it with new technologies or to completely switch to XGSPON and beyond.