00410nam a2200145Ia 4500003000600000005001700006008004100023020001500064040004900079082002000128100002100148245001800169260002600187500005100213NORSU20240718025119.0240220s9999    xx            000 0 und d  a0130141186  aNORSU Dumaguete (Main Campus ll)cNORSU-MCII  a384.64 D75 2000  aDouskalis,  Bill 0aIP  Telephony  bPrentice  Hallcc2000  aIncludes bibliographical references and index.