網路維運中心 交換機維運技援系統 傳輸維運技援系統 電力維運技援系統 SS7網路管理系統 障礙申告系統 隨身查修臺系統 NOC Network operation center SOSS Switching operations support system TOSS Transmission operations support system POSS Power operations support system SS7NMS Signalling system no.7 network management system TRIS Trouble reporting information system MDAS Mobile dispatch administration system