The proposed buyout of BellSouth Corp. (BLS) by AT&T Inc. (T) hit a snag Friday when the two Democrats on the Federal Communications Commission asked for more time to study new concessions proposed by AT&T.

The commission had been scheduled to vote Friday, but the timing of any decision was thrown into doubt by the development.

An FCC spokeswoman, Tamara Lipper, said that FCC Chairman Kevin Martin was studying a request by Democrats Jonathan Adelstein and Michael Copps to delay any action while the commission evaluates AT&T's proposal and it is made available for public comment. Further complicating the issue, Martin was scheduled to leave the country on Saturday. Lipper said she did not know when he would return.