1、TYPES OF TELEPHONENew type that emerges with telephone developmentA brief description of a traditional telephone:Earphone-receiverMicrophone-transmitterA ringerRotary dial baseA handsetA brief description of the continuing expanding of the telephone network:Consisting of a world wide net of telephon

2、e lines, fiber-optic cables（光纖, microwave transmissions, cellular networks, communication satellites, undersea telephone cables, all connected by switching centersEnabling the phone users to reach anyone with a phone service in the globeROTARY DIAL TELEPHONEROTARY DIAL TELEPHONEUsed approximately un

3、til the 1970sRotating the disk(圓盤）and getting an operator who got to connect you phone to the one you want to reachFew people used it.The identified number of each phone or the telephone number-4 digitsPUSH-BUTTON/TOUCH-TONE(按鍵式的) TELEPHONEPUSH-BUTTON/TOUCH-TONE(按鍵式的) TELEPHONEFirst introduced in 19

4、63 by American Telephone & Telegraph Co.Needing a fixed telephone number to dialThe speaker can speak to and hear from the other end simultaneouslyWidely-used, 8 digitsA CORDLESS TELEPHONEA CORDLESS TELEPHONEOriginated from the push-button telephoneFeaturing a potable handset which communicates

5、by radio transmissions with the base unit that is connected with the telephone networkAttention: The above types are all called landline telephone(固定電話） that are connected by a pair of wires to the telephone networkMOBILE PHONE/CELLPHONE/CELLULAR PHONE-攜帯電話MOBILE PHONE/CELLPHONE/CELLULAR PHONE-攜帯電話F

6、irst invented in 1973 by Martin Cooper from Motorola Inc.Communicating with telephone networks by radio transmissions or microwave transmissionsSMART PHONESSMART PHONESAlso mobile phones, yet wide range of usesrecording spoken messages, sending and receiving text messages, taking and displaying phot

7、os and videos, playing music, surfing the InternetIntegrating the distant communication and commuting needsINTERNET PROTOCOL (IP) TELEPHONERequiring an Internet connection and a hardwaretelephone adapters（適配器）, or a computer application(software) to transmit conversations encoded as data packets Computer-Internet-comput