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 Address to refer: http://www.miningweekly.com/article/push-to-talk-2010-10-07
 Article Headline: Push to Talk
 Abstract: Push To Talk or PTT as it is commonly known is a two way communication system using the GSM Cellular Network with a cellular device. It is suited for any organisation or industry which have a number of personnel out in the field or establishments where costs could be kept to the minimum.
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