Unit-8Telephone-Cards(通信管理与运营专业英语教程)课件.ppt

Unit 8 Telephone CardsImportant vocabularyn prepaid phone cardn 预付费电话卡n PIN(personal identification number)n 身份号码n land-linen 陆线，陆上线路n magnetic stripen 磁条n ATM(Automatic Teller Machine)n自动柜员机n pay-phone n公用电话n key cardn 房卡，电子开门卡n optical storagen 光存储，光存储器Important vocabulary Telephone cardsnA telephone card,calling card or phone card for short,is a small card,usually resemblinga credit card,used to pay for telephone services.nTelephone cards can employ prepaid credit system or credit card style system of credit.Types of telephone cardnPrepaid cards:purchased with a specific balance,from which the cost of calls made is deducted.Pre-paid phone cards are disposable.nPin cars:a card with a special PIN（personal identification number）printed on it that allows one to charge calls to a land-line telephone account.Core technologies for cards nStored-value:the card itself contains the balance available.The balance is read by the public pay-phone machine when it is inserted into the machines card reader.nIt is similar to an ATM at a bank.nWays in which the value can be encoded on the card.n1.The earliest system used a magnetic stripe as information carrier.Stored-value cardsn2.The next technology used optical storage.Optical phone cards get their name from visible marks left on the card,such as holes or lines,so that the card reader scansfor such marks and determines the balance on the card.n3.Chip cardsnThe initial microchipswere easy to hack,typically by scratching off the programming-voltage contact on the card nHighly secure technology aided the spread of chip phone cards worldwide.Remote memory cardsnRemote memory:nUses a toll or toll-free access number to reach the database and check for balance on product.nRemote memory phonecards can be used from any tone-mode phone and do not require special card readers.Since remote memory cards are more accessible and have lower costs,remote memory phone cards have proliferated Remote memory cardsnPurchasing in most countriesnin retail storesnretail chains ncommonly corner stores nSpecific features:nrechargeability:npinless dialnspeed dial and more nCalling accounts:Accounts not requiring a cardn eliminating the need for printing of a physical card nreducing the costs nincreasing convenience Phone cards collectionsplace advertising on cardsincrease the appeal of the cards to consumersdisposability of the cards Combined withcollecting phone cards as a hobby