00280nam a2200109Ia 4500008004100000041001200041082001100053100001700064245007700081260000600158650000600164221030s9999    xx            000 0 und d  aEnglish  a105.23  aB. Douskalis 0aIP Telephony -- The Integration Of Robust VOIP Servicescby B. Douskalis  c0  aB