T-Mobile launches nationwide July 2nd with its home-line replacement service--or is it a cell plan extension service? I link here to Seattle Times's columnist Brier Dudley's take on @Home, T-Mobile's $10 per month unlimited domestic home calling service that leverages customers' existing cell service and broadband connection. The service launched in the Seattle area several months ago, and is expanding nationally, and Dudley interviews T-Mobile's boss Robert Dotson for the story. Dotson says T-Mobile doesn't see @Home as a way to get folks to necessarily cut their landline cord, but rather to extend the function of a cell phone inside the house, even if you're using cordless not cellular devices.
The service uses a router that accepts SIM cards for authentication, but the backhaul is pure VoIP over Internet. Regular POTS (plain old telephone service) phones can be plugged into the router. The router is also compatible with HotSpot@Home (an additional $10/month), which allows unlimited domestic calling over Wi-Fi using special handsets from T-Mobile; there are now 8 handset models available. Customers have to have at least a $40 single-line or $50 family plan service to add either @Home or HotSpot@Home.
Probably the key remaining advantage for Vonage and other Internet telephony services that typically charge $20 to $30 per month for unlimited calling is that they include unlimited calls to any number in Canada or the U.S., not just the U.S., as well as unmetered calls to landlines in dozens of other countries in Europe as well as Australia. For those who regularly call outside the U.S., the @Home service would quickly become ridiculously expensive for its international tolls.