DSL Connectivity Problem

hi i m from karachi and i m using dsl 4mbps connection from malir. last couple of days the net is doing some problem between 5 to 10pm . the problem is that the adsl link is stable but all the lights got hang for 2 or four minutes and after that they are working fine . the snr of line is 22 to 26 . plz can any one tell me whats going on from 11 pm the net is working fine ????????? ho i forgot to mention i m using huawei modem and i brought a zte modem from my frined both are doing the same problem on that time .

i think this could be the voltage problem. Check your voltage stability during these hours or try to get a stabilizer between modem and power supply connection of modem.

dude i m already using stabilizer +ups & its APC .