DTAC: after investing with 3G on 850MHz frequency considerably, thus making the operation (the new frequency antenna stick) after the 2100MHz frequency is to gradually and in the first period to open the new service using named DTAC TriNET as advertising that will get the channel bandwidth or maximum width, which compares the three-lane road frequencies: 850, 1800, and 2100MHz, which is part of the 2100MHz will focus on only the largest towns with high density only. But in the future it would over time due to antenna embroidery all over the country and then they cancel the TriNET to a full 3G is the same as the AIS themselves.
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