I would like to make a point. I have 512UL and use bridge mode and get boosted speed of 2 mbps for few minutes or more whenever I disconnect and connect again.This is happening since last 2 months. But I would like to share my observation. I am a heavy downloader and my pc is almost on every moment I am at home. I observed that this speed boost does not happen everytime I disconnect and reconnect. It only happens in time roughly between morning 7AM - 1PM and night 7PM-1AM.These timings are approximate + - 30mins. Barring these periods, no matter how much I disconnect and reconnect I get only 512 flat.Sometimes the boost is for 1 min, sometimes for 5 min or 15 min or half and hour also. Once I got the boost for whole day also. This shows that since last 2 months, some R&D are going on at Airtel and at the end we are benefitted.For @AjayJP , the speeds you refer i.e 2560Kbps/1024Kbps is the maximum link speed limit that your line can transfer data downwards/upwards. It is given by DSLAM whenever your modem gets the link from it. Its always the same for each and every connection no matter its 128, 256, 512 until 2560Kbps. The capping is not done by DSLAM. Different hardware devices are used such as packetshaper or NetEqualizer for badwidth shaping and allocation.