protokoli ip-telefonii
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About "protokoli ip-telefonii"
protokoli ip-telefonii, printsipi. protokol identifikatsii seansa svyazi sip. protokol zapisi seansa svyazi sdp. protokol ob'yavleniya seansa svyazi sap pod ip-telefoniey podrazumevaetsya golosovaya svyaz, kotoraya osushestvlyaetsya po setyam peredachi dannix, v chastnosti po ip-setyam (ip — internet protocol). na segodnyashniy den ip-telefoniya vse bolshe vitesnyaet traditsionnie telefonnie seti za schet legkosti razvertivaniya, nizkoy stoimosti zvonka, prostoti konfigurirovaniya, visokogo kachestva svyazi i sravnitelnoy bezopasnosti soedineniya. v dannom izlojenii budem priderjivatsya printsipov etalonnoy modeli osi (open systems interconnection basic reference model) i rasskazivat o predmete “snizu-vverx”, nachinaya s fizicheskogo i kanalnogo urovney i zakanchivaya urovnyami dannix. "mo...
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