1.
Any other type I or II modem supplied by BSNL
may have under Advanced 0ptions/
Nat Virtual server/Port triggering and DMZ.
2.
Try to exchange Ut300r2U ( if on rent ) for another
Type 1 modem .
3.
If purchased outright , can try a FW
update at YOUR OWN RISK
Check for old threads in this forum
Search Box above. Code:
UT300R2U firmware upgrade.
Recent thread;
http://www.indiabroadband.net/bsnl-b...-board-id.html (July 2009 D-link firmware for UT300R2U with 96332CG board id)
4.
Or you can buy some other ADSL Modem
like IBallbaton from computer dealer/s