terminal trunk 中文意思是什麼
terminal trunk
解釋
（電話的）終端干線-
Before the 1990s, the digital transmission equipment was based on the technical standards of plesiochronous digital hierarchy ( pdh ). in order to connect the switch to pdh transmission equipment, the switch side needs lots of terminal equipment of the primary rate, i. e., 2048 kbits ( 2m ) switching terminal circuits in compliance with itu - t standards ( e. g. s1240 s dtm trunk module and axe10 s etc module ) and ansi - standard - based 1544 kbits ones
在90年代初期以前，數字傳輸設備是建立在pdh （ plesiochronousdigitalhierarchy ）技術標準上，為了連接交換機到pdh傳輸設備上，在交換機側需要大量的符合基群速率的終端設備，即符合itu - t標準的2048kbits （ 2m ）交換終端電路（如s1240的dtm中繼模塊， axe10的etc模塊）和符合ansi標準的1544kbits交換終端電路等。 -
Apart from the construction of the treatment plant, the work will also include the construction of a 200 - metre - long trunk sewer of about 500mm in diameter for connection to the public toilets and cable car terminal and associated tourist developments in the area
除建造昂坪三級污水處理廠外，工程並包括興建長約200米、直徑500毫米、接駁至昂坪的公廁及昂坪吊車站和相關旅遊發展項目的污水乾渠。 -
The epon network includes optical line terminal ( olt ) and optical network unit ( onu ). onuses share the optical distribution network ( odn ) trunk fiber back to the central office
Epon系統採用局端機（ olt ） -用戶端機（ olt ）兩級結構，中間由無源光分配網路完成下行光功率分配和上行光耦合。
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