Told there is a limit on the number of devices

HI

I am considering migrating to FIOS and I spoke to a rep on the phone and he told me that there was a limit of 11 devices that could be connected to the wireless router. When I started asking questions about it he got snappy and wanted to get back to the sales script.

Could someone provide info on what limitations exist on connectivity? Is it a hard limit requiring all devices to be registered? Is it a simultaneous limit?

Can I add my own wireless router to get around the issue?

Thanks in advance