In our company we have 2 remote offices that are currently connected to our main office by a point-to-point T1 in each remote office. We have an Adtran router that splits the point-to-points and dedicates channels 1-12 to data and channels 13-24 to the PBX system (which the Comdial PBX system REQUIRES, don't ask me why....). We need more bandwidth for business needs and want to bond two point-to-points together. Adtran can do it, but we need 3 expensive 3rd party "IPTube" devices to pull this off. I'd prefer a way to do this with a single router in each office. I need a way to still dedicate those specific channels to the PBX system. I know that there is a WIC for Cisco routers that can drop/insert specific time slots, so if we created a channel group that took 13-17 from one half of the bond and 18-24 from the other half, could that work possibly? If not, is there a way to specify 13-24 from one half of the bond and use the remaining channels bonded together for aggregated throughput? We don't need the elevated burst speed.
If none of this will work, could anyone possibly recommend a way we can do this without loading our LAN room up with too much extra equipment? Thanks!