Special Services and Private Lines
Unlike incoming 800 service and incoming telephone service, private line circuits, such as T-1s, Synchronous Optical Network (SONET) entrance facilities, fiber optic rings, metro Ethernet links, and other "custom" services can be difficult and complex to restore.
Preplanning is absolutely essential because these services are hard-wired data services that do not move easily. Combine it with the fact that your organization’s private lines might be the most revenue-impacting services your organization possesses. Voila! You have the makings of a world-class disaster if there is a failure.
If you do nothing in advance, there is often little that can be done after the fact and there is much to lose. For a great many companies today, a single cable cut that isolates the network all day literally deprives that company of 1/22 of a month’s income.