I was looking around for a reconnection script for the TP-8840T Ver.2 but was not in luck.:outch:

One of the weirdest thing is that the router doesn't have any internet reconnection option in it's web based configuration menu.:confused:

I found a workaround that seems to do the job.;) It basicaly switch the ADSL Type for ANNEX A/L then change it back to ANNEX A/I/J/L/M.:whistling: So, if your DSL connection require a different setting in order to work, you will need to change the script.

Also, if someone has a simpler solution, I would gladly take it.

[[[HSRC]]]
    [[[STEP]]]
        [[[REQUEST]]]
        GET / HTTP/1.1
        Host: %%%routerip%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        GET / HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        GET /status.html HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        GET /navigation-status.html HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        GET /status/status_deviceinfo.htm HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        GET /js/general.js HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        GET /advanced/adv_firewall.htm HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        GET /navigation-advanced.html HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        GET /js/general.js HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        GET /advanced/adv_adsl.htm HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        POST /Forms/adv_adsl_1 HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%

ModulationType=Auto+Sync-Up&AnnexTypeA=ANNEX+A%2FL&adsl_opmode_apply=SAVE
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        GET /advanced/adv_adsl.htm HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        POST /Forms/adv_adsl_1 HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%

ModulationType=Auto+Sync-Up&AnnexTypeA=ANNEX+A%2FI%2FJ%2FL%2FM&adsl_opmode_apply=SAVE
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        GET /advanced/adv_adsl.htm HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        GET /status/status_deviceinfo.htm HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        GET /navigation-status.html HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

    [[[STEP]]]
        [[[REQUEST]]]
        GET /js/general.js HTTP/1.1
        Host: %%%routerip%%%
        Authorization: Basic %%%basicauth%%%
        [[[/REQUEST]]]
    [[[/STEP]]]

[[[/HSRC]]]

Solution is very simply:
1)On the page "INTERFACE SETUP\Internet" -set option "Connect Manual" instead "Allways On" + save
2)go to page called "STATUS" section WAN -where you can see new button with description "Disconnect" or "Connect"
voilà !
3) Now you can record by jdownloader appropriate script
from Poland Marek