Bandwidth Aggregator

Our target is to allow bandwidth aggregation of few 3G/4G modems with buffering and lost connection control and our main concern is related to upload bandwidth. The software should use aggregated bandwidth of all available connections from 3G connections over various networks, WiFi, others We are looking for a software solution that will allow us to create two-way connection from one windows 7 machine over several internet connections to another windows 7/2008 machine in internet, which will act as proxy / tunnel to internet in general. The connection should work on a specified port (like SSH/VPN tunnel). Its more about software implementing some redundancy and data [login to view URL] may work similar to RAID 3/5 (only 2/3 of the total bandwidth is needed for successful transfer).