I've made 5 branches, each having PCs, laptops and thermostat having wireless connection, access point, switches routers and ip phones. I can't seem to figure out a way for all 5 branches to be able to ping/call each other, can anyone please help me with that? Also, I need to change wireless connection for each branch, because since they all have the same name/password, one branches thermostat connects to a different branch access point. All the help will be appreciated.
