Here's what they have to say in response to commonly raised questions and issues. We chose frame relay because it allows us the flexibility to provide links between companies as they become necessary, without adding additional physical connectivity. We use frame for our international connections. The basic reasoning is the relative ease of obtaining service. It is the safe choice.
Corporations have millions of dollars riding on their networks.
They can't afford to take risks. Frame relay is the best of that category. It is an inexpensive, reliable and well-known standard. Carriers and corporations trust it. Until now, frame relay has been used most extensively for the long distance backbone.