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Essential Guide to Telecommunications, The, Third Edition by Annabel Z. Dodd

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“The Last Mile” or Access Networks

The portion of the public network from the central office to the end user's location is the access network, or “last mile,” as illustrated in Figure 5.8. A major bottleneck of analog services exists in the cabling to residential and small businesses from the telephone company central office.

Figure 5.8. The last mile. Bulk cables, often fiber, from the central office into a neighborhood use digital transmission, while cables to individual homes often use analog signals. The cable from the telephone pole to the home or business is called a drop.

Cable modem service is provided over the last mile. Cable modems ...

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