I was asked to design a scenario where a head office will provide voice and data services for remote workers. All remote users will be about 15-20 and all will be using cisco client vpn and cisco ip softphones. I have some considerations regarding the bandwidth because the head office is limited to work only under ADSL connections with 8mbps Down/512kbps Up
I am thinking of having 2 ADSL connections connected on a load balancer in order to increase the upload speed and from the load balancer to connect 2 routers, one cisco UC500 router for voice and one cisco 871 for data.
However i am not quite sure how i will connect both routers to communicate with each other since the users who will use the vpn to access the head office will need to access the data network and the voice network simultaneously.
However i am not sure if what i m thinking is right or wrong. I really appreciate to have some guidance on this scenario please