I'm new to Mikrotik but my ISP and I have configured it already, using it to bond four DSL lines right now (24Mbit downstream, 3Mbit upstream). It's been working flawlessly for the past couple of weeks and I am very happy with it... However, what I really don't like about about it is that we are having to use four seperate DSL modems to bridge to four seperate ethernet ports (via VLANs on a switch).
Anyway, I looked at the hardware compatibility list and it looks like only one xDSL PCI card is supported, and even that is only a 2.3Mbit card for SDSL only. What would be ideal is support for an ADSL PCI card that can handle 6Mbit or more... Then I could have it all self-contained in one system with the phone lines plugged straight in to the back of four PCI ADSL cards in a rack-mounted system.
So, does Mikrotik support an ADSL card (maybe undocumented?), or does anyone know when it might...?