As of Now, Our business has has a main office with about 30 users. We have a PRI for VOIP, T1 internet line and sonicwall NSA 2400 router. We have 6 branch offices with another on the way, each has 2 internet lines connected by site to site VPN. About 14 VPN's total. All sites use RDP to our main server, about 60 users.
Our T1 line is quickly becoming insufficient for our needs. I would like to add a cable internet line to at least alleviate the local usage of internet to free up bandwidth for the RDP sessions and VOIP. I would love to use load balancing if possible, I know the sonicwall can do it but not sure how well.
Any advice would be most welcome.
Cheers!