Contrary to my expectation, my problem was solved outside the forum. I was surprised by the lack of general interest of " experts" in TP-Link

It is possible that no one has a lamp to illuminate these darkness ? Where are TP-Link experts ???????

Mavis wrote Can you login your modem's configuration page and open port for router's WAN IP? No, I can't login Zhone configuration page, all things have to be done using TP-LINK, that's why I posted...

Model : Hardware Version : Not Clear Firmware Version : ISP : Assuming that we have valid IP (201.xxx) available contracted with the ISP how to configure TL-MR3420 to remote access ? current below...