When you Bond ADSL, you use combine multiple ADSL, SDSL, Leased Line, ISDN, 21CN connections including ADSL2+ and ADSL MAX, and wireless services including 3G and WIMAX into one stable, high bandwidth Internet link.
Bonding aggregates data flow across these connections on a packet by packet basis which can be weighted to take advantage of connections of differing speeds.
References:
See Bonded ADSL for more information
View the Xrio UBM product range