"This is a great start, " says Jeffrey Pulver , co-founder of Vonage and current CEO of VoIP rival Free World Dialup .

FORBES: FCC Gives Internet Calls Half A Push

In that scenario, says Free World Dialup's Pulver, a carrier could block service and effectively make its own VoIP product the only available option.

FORBES

In February, the FCC said that Free World Dialup should be considered an "unregulated information service" under FCC jurisdiction, rather than a telecom service, which would be governed by numerous state and federal regulations.

FORBES: FCC Gives Internet Calls Half A Push