AT&T’s CallVantage consumer VoIP service has been expanded throughout the Western United States, including areas of Arizona, Colorado, Oregon and Washington. To date, AT&T has made the service generally available to consumers in California, Massachusetts, New Jersey, New York and Texas. http://www.att.comAT&T launched its CallVantage at the end of March 2004, along with an extensive advertising campaign.
AT&T Expands VoIP to Western U.S.
Share this article
Help others discover this reporting.
Explore More
From the Technology Graveyard
You just read about VoIP. Here is what it replaced:
POTS / PSTN served from 1876. What ultimately replaced it?
POTS / PSTN analog voice carried as a continuous electrical signal over a copper loop to a circuit-switched exchange, which set up an end-to-end dedicated path for the duration of the call. Its job passed to VoIP — but the problem it solved, and the ideas it proved, live on in what replaced it. The standard rests here in the archive. One of 198 technologies here that opened a door and then held it for the next.
On this day
May 16From 25 years of the Converge Digest archive.