Bypass (telecommunications)
In telecommunications, the term bypass has these meanings: 
 The use of any telecommunications facilities or services that circumvents those of the local exchange common carrier. Note: Bypass facilities or services may be either customer-provided or vendor-supplied. An alternate circuit that is routed around equipment or a system component. Note: Bypasses are often used to let system operation continue when the bypassed equipment or a system component is inoperable or unavailable. References
Federal Standard 1037C and MIL-STD-188

Telecommunications economics