Hi Netfreak / Everyone..I am trying to connect atcom 320 pd voip phone on the mtnl dsl connection but i am getting Logon failed ...It was working fine at my friends place ...I guess there is some firewall problem ..Can you tell me what settings are to be done on the voip phone & D-Link 503t modem / router ..do i need to disable the firewall can u help me on this ..thanks in advancesanjay