In the Philippines, Internet connectivity is a very long-standing problem in every business industry. One of the sectors that is so affected by the problem is the banking industry.
Now, there's a solution which was proven effective not only in the Philippines, but also to other countries where IPSTAR has a coverage.
It's the same technology used by the same bank when typhoon Haiyan (a.k.a. typhoon Yolanda) devastated Tacloban.
The secondary link that banking industries needs to provide should be via satellite, like Thaicom-4, a.k.a., IPSTAR. It has a built-in security features (IPSEC) that will address security issues banking industries are concerned about.