device with an Internet browser-type interface. It will be an absolute requirement that the successful service provider acknow- ledge a request within 1 minute of lodging by an automatically generated response, and confirm within certain time frames, depending on priority included in the request. Responses to this request will be evaluated based on cost and tech- nical trade-offs across performance, robustness, and reliability. Pre- sentation of facts and figures is left to the service provider; however, 7 SPECIFYING EQUIPMENT AND SERVICES greater consideration and eventual award will be given to the pro- posal with meaningful, detailed design characteristics that are related directly to service cost. Highly summarized, the most credible pro- posal containing best performance, robustness, and reliability con- strained by most favorable start-up and long-term cost is most likely to be accepted. The buyer reserves full and final judgment on all matters of the selection and award process and will not under any circumstances pay for cost estimates, proposal preparation, or a similar effort, material, or services except by formal agreement to do SO in advance of a formal purchase order. Due diligence will follow initial selection. Due diligence includes physical examination of a cross-section or example of network elem- ents making up the service provider's core network. Terminals and central offices serving all sites will be examined closely and must include face-to-face meetings with technicians, supervisors, and man- agers who will be supporting the network. The successful supplier will exhibit confidence in its ability to isolate and resolve issues and con- cerns of all levels of severity in a competent, logical, and straightfor- ward manner. An examination of power systems, heating, ventilation, air handling, and safety systems and procedures will be conducted. Network Topology Network topology will cover sites 1 through N. Service providers initial responses should be based on eight sites as depicted in Figure 7