The dg834 V3 uses the TI AR7 chipset, I don't know any equivalent to adslctl for the AR7 chipset.
You could reboot the router when noise on the line is at its minimum (usually early in the morning) so it syncs at a higher speed and avoid rebooting in the evening when noise margin usually fall.
Edited by AbandonShip (Thu 11-Oct-07 16:34:50)