Anyone know of a way to get the Cisco phones to communicate with the TFTP server or register through a NAT, like any regular broadband router? All the Polycoms I've tested seem to work perfectly even through multiple NATs with no special configuration of any kind but I'll be damned if I can even get port forwarding to work for the Cisco phones. They won't even show up in Sylantro ComManager for registration.
Any suggestions are greatly appreciated.
Thanks, Brandonb