solution. This chapter answers questions about how to design, build, acquire, certify, and run a timing solution. The order of topics in this chapter is meant to closely shadow how an operator might start with de- ployment of a real timing solution with practical lessons learned from development, rollout, and op- eration. The idea is to start with an understanding of what you are buying when you are looking to buy physical devices. The first section addresses the design of timing-aware equipment, because you must understand the internal hardware trade-offs to understand what you are buying. Much like buying a car, you should know the basics of what goes into selecting an automatic or manual trans- mission before signing up. This section shows you the difference between a well-designed imple- mentation and one likely to disappoint. The next section gives some practical advice that helps when selecting equipment through some type of procurement (buying) process. The idea is to find the best equipment to do the job at the minimum possible cost. At the end of this process, you end up with a short list of possible vendors. The next step then is to take a sample of equipment from each of the vendors and put it in a testing lab; therefore, the third section covers the testing of timing in a lot of detail. This step is valuable for staff learning, equipment certification, and building confidence in the components selected for the solution. Following this is a section on automation and assurance. Once the equipment has been ordered, the design is being fine-tuned by network engineers, and now the network operations staff has to figure out how it is going to be rolled out and incorporated into their network. This involves not just con- figuration but also being aware of the solution performance as well as monitoring the network and verifying every radio is receiving an accurate timing signal. The final section describes potential deployment headaches and some of the day-to-day operational issues that might arise. It includ