Multi Link Point to Point Protocol is a nifty protocol which allows for the bonding of multiple lines. With a MLPPP enabled DSL account, two or more lines, DSL modems in bridged mode and a bonding router such as a Mikrotik routerboard, you can effectively quadruple the speed (minus a little overhead) of a DSL connection.
Here's how! connect to the Mikrotik via the Winbox application and follow along.
PPP -> "Interface" Tab:
- Hit the red plus sign
- pick "PPPoE Client"