Via Consumerist:
AT&T is firing VoIP customers who live in areas not served by E911. The letters to CallVantage subscribers were sent over the past two weeks and read, “All customers who currently have A911 service must be moved to E911 service (where available) or their AT&T CallVantage service will be disconnected.” If E911 is unavailable, service is suspended effective May 21.

5-22-2007 14:47:51
While I certainly understand the pain it might cause AT&T by reducing their service area, I think is probably the right thing to do.
When these services are marketed as “phones”, consumers expect them to be able to work like phones. The potential for a real tragedy exists when family members rely on access to police, fire & medical only to find that, in an emergency, they can’t be reached.