I finally found my error. Turned out to have been a simple mistake. All is working now. Thank you for all your help. It was greatly appreciated.

@MisterW That may be where I have to go in the end, if I cannot figure out the double NAT issue, but I would like to avoid it if at all possible.

@jprobins

Well, it appears that my last attempt failed as well. Resources on the Netgear router are still inaccessible from outside. Here is my current (unsuccessful) port forwarding configuration....

OK. Slow as I am I might have figured out where I went wrong. I should have forwarded all the important Netgear port of the the TPLink to 198.168.0.101, which is the TPLink LAN address of the RS700....

@RaRu The LAN address for the TPLink are 192.168.0.100 and 192.168.0.101. THe LAMN addresses in the Netgear are 192.168.1.2 through 192.168.1.56. The subnet masks are identical 255.255.255.0.