ATT used to restrict VOIP applications like Skype to WiFi only, and not via the ATT 3G wireless network. This policy changed today:
"DALLAS, October 6, 2009 - AT&T today announced it has taken the steps necessary so that Apple can enable VoIP applications on iPhone to run on AT&T's wireless network. Previously, VoIP applications on iPhone were enabled for Wi-Fi connectivity. For some time, AT&T has offered a variety of other wireless devices that enable VoIP applications on 3G, 2G and Wi-Fi networks. AT&T this afternoon informed Apple Inc. and the FCC of its decision."
Read more here:
http://arstechnica.com/apple/news/2...f-heart-about-voip-over-3g-for-the-iphone.ars
"DALLAS, October 6, 2009 - AT&T today announced it has taken the steps necessary so that Apple can enable VoIP applications on iPhone to run on AT&T's wireless network. Previously, VoIP applications on iPhone were enabled for Wi-Fi connectivity. For some time, AT&T has offered a variety of other wireless devices that enable VoIP applications on 3G, 2G and Wi-Fi networks. AT&T this afternoon informed Apple Inc. and the FCC of its decision."
Read more here:
http://arstechnica.com/apple/news/2...f-heart-about-voip-over-3g-for-the-iphone.ars