ISDN, MPLS and VSAT
We have a centralized database online system with hub and spoke network architecture. On top of this, we have our own VPN setup. Our users either connect through VSAT or dedicated leased lines for accessing our system with ISDN as a last mile backup connectivity. We are now exploring a possibility of having MPLS as a third option for our users and have some questions for you.
Is it possible to provide them ISDN as a last mile backup connectivity ? If yes, how does it works?