Though its plans cost a bit more than those of competing VoIP services, AT&T CallVantage stands out for its consistently strong call quality and long list of features.
AT&T is shutting of its voice over IP service called CallVantage.
A cheat sheet for defensive computing.
VoIP number portability problems
Study ranks clarity and reliability of six VoIP providers, but finds Net telephony still lags behind plain old phone service.
Net phone operators face a late September deadline to fix their 911 systems, the FCC rules.
Internet service provider touts plans for new telephony services and hybrid cell phones as it digs in for a long phone fight.
In another sign of detente, Verizon plans to open its 911 emergency calling infrastructure to providers of Net-based phoning.
For $19.95 per month, the plan offers 500 minutes of outbound local and domestic long-distance calls.
The Net phone provider considers asking for help solving problems with SBC over subscriber access to the emergency network.