Communication systems in use today have various kinds, such as walkie-talkie (Radio Communication) Telegraph (Telegraphy) teletype (Telex). Telephone (Telephone) fax (Facsimile) or radio the (Pager), etc. but the communication system has been popular all over the world is.Because the phone can interact with each other immediately fast pace to the event, the system, the other would be done and can't be done telephone is very popular in the world of communication and present. The phone is the indication to prosperity.With different there is a saying or specifications about developing countries is that any country with จำนวนเลขหมาย telephone numbers per population in the country 40 100 people. Assume that country there were then. Or is a developed country.10 number up to 100 population. Assume that country's developed
.To see that many countries around the world to focus on business phone greatly in "telephone was known since the rush that 5 which telephone match the Greek." Telephone without Tele mean distance and Phone.The conversation when translated means combination and conversation over long distances. Or a from one point to one point, want
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