Consumer groups and anti-media activists are registering their collective opposition to the AT&T BellSouth merger June 5.
That is the FCC deadline for filing comments on the planned reunion of AT&T and one of its spin-off companies.
The groups include American Antitrust Institute, COMPTEL, Consumer Federation of America; Free Press, Media Access Project, National Association of State Utility Consumer Advocates.
Comptel will have a former ally on the FCC in new commissioner Robert McDowell, but it is unclear what decisions he will have to recuse himself from.
The groups also promise on June 6 to announce "new activities and strategies" to block the deal.
The proposed $67 billion merger between, announced in March, could speed AT&T's entry into the TV space.
Verizon has so far been the most aggressive player among the telephone companies.
It has been over two decades since the government broke up AT&T and spun-off local phone service into the Baby Bells, but the competitive landscape has changed dramatically, with cable into phone and telco into video, and the Baby Bells into long-distance.