Well, look who's back. By 1992, AT&T finally realized that an economical, potentially popular videophone must work over its regular phone network without any special connections. With the benefit of digital technology, the AT&T VideoPhone 2500 sent jerky, slightly off-sync color video at ten frames per second over regular phone lines. It was an exciting advance, but a single phone cost $1599.99 ($2,486.19 in 2010 dollars) and you could only call other VideoPhone 2500 owners. Yet another video telephone dropped off the market not long after its debut.