AT&T and CenturyLink have joined USTelecom and the CTIA trade associations in firing the latest salvo at net neutrality orders by asking the FCC to stay its action of placing broadband Internet access services under Title II regulation. The service providers and industry associations said that request does not affect the regulator's rules that prevent ISPs from blocking or throttling a user's Internet connection when accessing legal content and that prevent content owners from paying for access to a faster service lane.