 dynamics and is subject to different policy regimes. Vertical integration across the layers, as well as competition and collaboration adds to complexities of managing a company in this industry. Retail service provider layer Wholesaler/Aggregator Layer 2 ethernet access network Figure 2.25 NBN and retail service providers [24] Broadband Telecommunications Technologies and Management Case Study Questions What is the rationale behind the selection of NBN mix of infrastructure technologies? What are the business issues associated with the roll-out of NBN? How did Australian government policies lead to the broadband telecommunications landscape pre- and post-NBN? How may structural separation be conducive to a more efficient telecommunications service provision? How do content providers benefit from this structural separation? Analysis frameworks are one of the most important tools to analysts and managers. For tech- nology businesses, one needs to consider not only the technology but also the associated business issues. For telecommunications systems, policy is another important dimension as governments regulate this business in order to ensure equitable access to services. The TBP framework and its associated models are fundamental to the analysis and management of broadband telecommunications services and content businesses. Review Questions What are the technology, business and policy issues the Chappe telegraph dealt with? 2. What role did the government of France play in the roll out of the Chappe Telegraph? 3. Assume that a Chappe relay operator can start setting its own transmission after observing the received code. Further assume that it takes on average 2 min to set the semaphore. How long does it take to send a message 'battle is won' from Lille to Paris using the Chappe Telegraph? 4. Why do you think Morse telegraph was a system used by business as well as the government, whereas Chappe's system was mostly used by government? 5. Use the TBP framework and compare the following: a. CD and MP3 players b. A