Apparently AT&T has sent a letter to the FCC asking them to investigate the Google Voice service, and say that Google Voice is preventing consumers from calling certain numbers which is in violation of federal call-blocking rules reports the WSJ.
AT&T further claims that Google is in violation of “net neutrality” principles that have been designed to ensure customers can use any legal internet service.
Google does block outgoing calls to such numbers as adult chat lines, and conference call centres as the blocking of these numbers reduces Google’s expenses. The FCC has acknowledged they have received a letter from AT&T and are reviewing it, but would not state if they will investigate.