This makes the access network one of the most complex networks in the world to maintain and keep track of.
Operators now look toward additional services such as xDSL based broadband and IPTV (Internet Protocol Television) to guarantee future profit. The access network is again the main barrier to achieving these profits since operators world wide have accurate records of only 40% to 60% of the network. Without understanding or even knowing the characteristics of these enormous copper spider webs, it is very difficult, and expensive to 'provision' (connect) new customers and assure the data rates required to receive next generation services.
Source: Wikipedia > Access Network
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