Revision I ActionTec routers have USB3 ports. If the ports don't include headers for USB2, you won't be able to charge your iPhone as USB3 is not backwards compatible with USB2, like USB2 was with USB1. The pinout is entirely different. Alternatively, if the ActionTec has USB2 pinouts and backwards compatibility, as it likely does, it could likely not be putting out enough power for the iPhone to accept it as a charge. The router could also be seeing it as some device that requires an unloaded driver, and thus does not give power to the device since USB ports can be controlled in that regard, too.
I'm just throwing this out there. Perhaps someone who has a Rev. I will chime in shortly.