AT&T spent a good bit of its earnings call today talking about its network -- not too surprising, really, considering the cozy relationship between dropped calls, subscriber count, and profit. The overall takeaway was that the company is pleased with its progress and continues to improve thanks to the addition of new carriers at existing cell sites (read: increased over-the-air capacity), an ongoing backhaul renovation, and the recent roll-out of 7.2Mbps capability across most of its 3G footprint. In terms of dropped call