Ever wondered what “ADSL modulation” is? I love to explore or tinker routers and switches fresh out of the box. I check the manual or sometimes go straight to its settings and view each tab to see its capabilities. One of the settings I usually come across is called ADSL modulation.
ADSL (Asymmetric Digital Subscriber Line) delivers more downstream bandwidth than upstream. Modulation is the way to transfer digital signals to analog signals that is carried over the copper wire. ADSL modulation settings are used depending on the line speed of the service you subscribed to from your Internet Service Provider. G.DMT /G.992.1 is used for ADSL (1) service (speed: up to 8 Mbps downstream/up to 640 kbps upstream), G.992.3 is used for ADSL2 (speed: up to 12 Mbps downstream and 1 Mbps upstream) and G.992.5 is used for ADSL2+ (speed: up to 24 Mbps downstream and 1 Mbps upstream).
If you have any issues concerning your DSL connection dropping consistently, you just have to drop the modulation one option lower and reboot the router to make it stable.
