Thanks scorpion.
I thimnk i gave a wrong info about Ip.
11.22.33.44:234 is how i access my TP link Wr543.
with subnet :255.255.255.0
in WAN my IP : 192.168.2.12 (Set to Dynamic)
Gateway :192.168.1.1
with primary DNS : 202.47.66.***
DHCP enabled : 11.22.33.1 end : 11.22.33.199
I applied for Static one from dyndns, and there, I got a domain name.
In there (dyndns) I supplied the IP of the DNS on my Tp Link
That's what I have done so far.
On Video server E screen, I put IP : 11.22.33.44
with port 90...and it apperead on my screen monitor, which is What I wanted.
Now what I wanna do is to access the domain name I obtained frm dyndns, outside my network, on the internet. which I could not manage.
Some suggestions mentioned that I should have an IP PUBLIC full dedicated, or special private port to deliver my request to DVR via my ISP.
I am totally confused, since I have no experience on it.
Thank you for yr help sir.