Privodyatsya svedeniya o printsipakh organizatsii i funktsionirovaniya protokola SIP (Session Initiation Protocol), shiroko ispol'zuemogo segodnya v IP-telefonii i yavlyayuschegosya naibolee veroyatnym kandidatom na veduschuyu rol' v setyakh svyazi sleduyuschego pokoleniya NGN. Opisyvayutsya soobscheniya SIP, protsedury upravleniya soedineniyami v IP-seti i mezhdu setyami IP i TfOP, protsedury autentifikatsii, zaschity informatsii, obespecheniya bezopasnosti. Rassmatrivayutsya rasshireniya SIP, obespechivayuschie vzaimodejstvie seti IP s telefonnoj set'yu pri sozdanii i podderzhke seansov svyazi TfOP-IP-TFOP, TfOP-IP i IP-TfOP. Izlagayutsya zadachi preobrazovaniya signalizatsii SIP pri vzaimodejstvii s drugimi protokolami setej NGN. Osveschayutsya voprosy testirovaniya SIP i puti realizatsii na baze etogo protokola ryada izvestnykh i novykh infokommunikatsionnykh uslug.

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