It's Not Really a 450-Mile Cable, but It Works Like One

It's Not Really a 450-Mile Cable, but It Works Like One

You like the idea of this new WAN link from Atlanta to Cincinnati, so you meet with the telco salesman. You sign the papers, and then his more technical colleague, typically called a sales engineer (SE), happens by. You ask him what the salesman really meant when he said, "It's just like we're running a 450-mile cable for you." The SE says simply, "We didn't run no stinkin' cable, but what we did do acts just like we did run a cable for youat least that's the technical description."

To build this service, the telco needs to install a 4-wire cable between your office building and theirs, as shown in Figure 14-2.