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RAlink SoC found inside an AT&T femtocell. Contains a MIPS CPU running Linux and some kind of radio. Not sure what… both the GSM and GPS are on separate parts of the board. Maybe 802.11?
Googling the part number on the die (RT3052) shows http://www.mediatek.com/_en/01_products/04_pro.php?sn=1045. The part is most likely a relabeled/fused RT3052:
TODO