Nestled underneath streets, hung high overhead and worming their way through homes and offices are copper wires, the arteries of an earlier era of telecommunications. As new services like cable television, internet and mobile phones emerged, separate networks were laid. Today, telecoms firms are offering an ever-wider array of services, and are merging their businesses to do so. But the companies making the physical equipment have been less adept at tailoring their gear for a world in which all sorts of communications can stream over a single network.
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