hi! i'm subscibing for wan connection for connection between branch sites. there are 2 types of connection recommended, optical and adsl. Optical to connect to the internet and adsl for vpn tunnelling between sites. What's the different between optical and adsl in this case? what's the different in port types or devices required for these 2 setups?
for the optical connection, which i;m not too sure what kind of connection is that? can i do a vpn tunnelling (backup) to the adsl' vpn site-to site tunnelling + as an alternative path for the user to go to the internet?