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US PCS is the label given to the digital Personal Communications standard for North America. Frequency allocations have been assigned by the FCC in the 1900 MHz range, and most have been auctioned to specific service providers, with a small band reserved for unlicensed use. To date there are seven different major standards (PCS-TAG-1 through PCS-TAG-7) proposed for US PCS use.
PCS-TAG-6 is the version based on DECT, a global standard for digital cordless telephones that originated in Europe and uses GMSK modulation. Proponents cite both the proven nature of the underlying technology and the availability of components as points in favor of this standard.
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