電話交換台，電話交換機
Operate telephone switchboard to answer, screen, and forward calls, providing information, taking messages and scheduling appointments.
負責接聽公司電話總機和轉接電話，提供并轉達相關信息，安排預約。
Here he oversaw a staff of technicians who watched visual monitors, computer readouts, and a telephone switchboard that kept him in contact with the many security personnel he commanded.
在這裡他監督所有技術人員監視着屏幕，電腦輸出以及電話總機，并與所有他手下的安全人員保持聯繫。
Will you cover for me at the telephone switchboard while I run out to post a letter?
你可否在電話交換台那兒暫且替我應付一下?我跑出去寄一封信。
A SOCKS server is similar to an old-fashioned telephone switchboard.
SOCKS 服務器類似于老式的電話交換機。
The girls will man the telephone switchboard till we get back.
姑娘們将在電話總機上值機，直到我們回來。
In four, the company responsible for the telephone switchboard wiring work.
負責公司電話小總機的接線工作。
Communication: the property should have telephone switchboard or direct lines and CATV access.
通訊：最好留有總機或相應的直線電話，具備有線電視接入；
Tom will man the telephone switchboard till we get back.
我們回來前由湯姆管理電話總機。
Notified by telephone switchboard of your hotel location.
電話通知酒店總機您的方位。
Responsible for operation of telephone switchboard, meeting and greeting clients and visitors to the firm.
負責操作電話系統，接待到訪的客戶和訪客。
In this view, a manager is sometimes likened to a telephone switchboard .
根據這個觀點，有時候把管理者比拟為電話總機。
This article is proposed to develop a new type of digit programme-controlled telephone switching board which is based upon the CAN bus to replace the old automatic telephone switchboard.
本文提出研制新型的基于CAN總線的數字程控交換機替換原有的全電子式自動電話交換機。
TG, AG the telephone switchboard main application like IP supermarket, the speech, the hotel and so on some situations, provide the tool for the operator which one kind of idea spends and manages.
AG話務台主要應用如IP超市，話吧，酒店等一些場合，為經營者提供一種計費和管理的工具。
Without dedicated data line, TSSS can connect general telephone set, switchboard, group telephone exchange or telephone outer ports of extension.
該直選台能直接和普通電話機、交換機、集團電話總機或分機的電話外線連接，無需專用數據線。
HWK-1A non switchboard indoor telephone commutator connect YX-1(2) indoor loud box.
HWK-1A型無主機室内電話擴音轉接器配接YX-1（2）型室内音箱。
The equipment has the function of call the HWB non switchboard anti-explosive telephone from program attemper to realize automatic connecting from switchboard to non switchboard.
室内程控電話轉接器具有程控調度電話對HWB型無主機防爆電話擴音通訊系統進行呼叫通話，實現調度電話和無主機防爆電話站自動轉接功能。
Communication between Earth and spacecraft is clunky and reminiscent of the days when switchboard operators had to plug in telephone lines by hand to connect the people at either end.
就連地球與太空船的之間的通訊也顯得力不從心，讓人想起要靠接線員手動插拔電話線來連接電話兩頭的舊日。
The lessee shall be responsible for the design and installation of telephone wiring from the tube well to the lessee switchboard intake port, and for the cost thus incurred.
從電話豎井至租戶總機入口端由租戶自行設計及安裝，費用由租戶自行承擔。
|telephone exchange;電話交換台，電話交換機
"Telephone switchboard"（電話交換機）是電信系統中用于連接多個電話線路并實現通話轉接的核心設備。其核心功能是通過人工或自動方式建立臨時通信路徑，使不同終端用戶之間實現語音通信。該技術起源于19世紀末，最初采用人工插拔線路的方式操作，後期發展為電子程控系統，成為現代通信網絡的基礎設施。
從技術演進角度看，電話交換機可分為三大階段：
在通信原理層面，交換機通過時分複用（TDM）或分組交換技術分配通信資源。其核心公式可表示為： $$ C = N times frac{B}{log_2(1+frac{S}{N})} $$ 其中$C$為信道容量，$N$為信道數量，$B$為帶寬，$S/N$為信噪比。這種數學模型為交換機設計提供了理論基礎。
Telephone Switchboard 的詳細解釋如下：
Telephone switchboard（電話總機/交換機）是一種用于管理和連接電話線路的設備，通過手動或自動方式将不同通話線路相互接通，實現電話通信。早期的電話系統依賴人工操作，接線員通過插拔線路完成通話連接；現代則多為自動化電子交換機。
如需進一步了解電話技術發展史，可參考中關于貝爾發明電話的内容。
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