is to simplify and importantly, speed up the availability of new applications for enterprise, mobile, and residential landline telephone companies' customers. This is a potential source of new revenue for carriers and may lower telephone companies' total cost of ownership (TCO). The Central Office Re-architected as a Data center standard includes capabilities that enable enterprise customers to access and download new services and/or change existing features remotely via centrally located consoles. According to the March 22, 2017, LightReading article "CenturyLink Delivers DSL Using CORD Platform," CenturyLink is supplying DSL to enterprise and residential customers from its CORD central offices. In another article published by Fierce Telecom on February 9, 2017, Glen Post, CEO and Chairman of CenturyLink, was quoted as following: We plan to have 100% of those (POPs) virtualized by the end of 2019. Enterprise customers have the ability to manage services such as DSL at centrally located consoles from headquarters and branch offices. The modifications and additions can be performed without carriers dispatching technicians to customer sites. This saves telephone www.TechnicalPDF.com companies the expense of "truck rolls," dispatching technicians to customers' locations. The Pace of Implementation of SDN, NFV, and Software Defined Networks (SDN), and Network Function virtualization (NFV), are technologies that rely on software to manage functions that previously relied on hardware such as routing and firewalls. Central Office Re-architected as a Data Center (CORD) enables telephone companies and enterprises to more efficiently manage the increasing amounts of data. Capital Depreciation at Telephone Companies Changes in telephone central office and network architecture often take years to be implemented. Providers typically depreciate capital expenses such as new central office and networking equipment over 10 years and even 15 years. Thus, the costs for older equipment may still be on their balance sheets. For publi