TY JOUR TI METHOD OF STRUCTURING PROBLEM OF ACCESS NETWORK ELEMENTS DESIGN BASED ON OPTICAL TECHNOLOGIES KW OSS/BSS system KW optical access network KW IDEF0 diagram KW draft KW detail design JO Vestnik of Astrakhan State Technical University AU Marysheva, I.. AU Sorokin, A.. AU Grigorieva, I.. PY 2019 IS 2019 PB Astrakhan State Technical University