tailieunhanh - Giáo trình tiếng anh điện tử viễn thông - digital telephone exchanges p1

LISTENING Listen to the following conversation about a call connect system, or PABX (Private Automatic Branch Exchange). The conversation is between Tim Allison, a sales representative, and John Gibbs, manager of company in the south of England. . Complete the table. Functions a. Internal calls Instructions i. ii b. External calls i ii iv v c. Transferring calls i ii iv v d. Automatic call- back i ii iv Pick up the handset . Pick up the handset . . . Pick up the handset Wait for the internal dial-tone . . Dial your internal correspondent . . . | Giáo trình tiếng anh điện tử viễn thông - digital telephone exchanges 4. LISTENING Listen to the following conversation about a call connect system or PABX Private Automatic Branch Exchange . The conversation is between Tim Allison a sales representative and John Gibbs manager of company in the south of England. . Complete the table. Functions Instructions a. Internal calls i. Pick up the handset ii . iii Dial the four digits of the extension b. External calls i Pick up the handset ii . iii Push button 2 iv . v . c. Transferring calls i Pick up the handset ii Wait for the internal dial-tone iii . iv . v . d. Automatic call- back i Dial your internal correspondent ii . iii Push button 4 iv . . Indicate which of the following sentences are true T or false F . T F 1. For internal calls you can dial the extension number immediately. T F 2. You push button 2 to get an outside line. T F 3. An operator isn t necessary with such a PABX. T F 4. You will hear two different dial tones when you transfer your number to another extension. T F 5. To transfer calls back to your own office you dial 8 and then your extension number. T F 6. If your correspondent s line is engaged you can press button 4. Your phone and his phone will then ring simultaneously when he hangs up. 79 Unit 6. Digital Telephone Exchanges . Fill in the following spaces with suitable words or phrases. Using the PABX it is quite easy to transfer a call to your colleague. When the phone rings for example on line 1 obviously you answer it. In this situation the call is not for you but for your 1 . at extension 3 you should 2 . 4. You will see that the held exchange line lamp wills then 3 . Then you simply call the required 4 .in the normal way by 5 . When your colleague answers you can transfer the held call in one of two ways. You can either simply 6 . in which case extension 3 takes over the original call from line 1 or your colleague at extension 3 can 7 . and he is automatically connected to line 1.

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