Parameterization of powering solutions for telecom/datacom clients

Quality of Service (QoS), for a consultant, is the answer to some basic questions like: "Is this solution optimal for this client in terms of: reliability, maintainability and budget?" In the SLA (Service Level Agreement) of those days, mission critical sites are signing with their client\´s very severe power QoS based in what the consultants optimized for them. The job of powering vast international submarine optical networks, telecom/datacom hotels or IDCs is not easy. The authors try, in this paper, to present some examples from each kind of site including configurations and discussions of various "qualitative factors" trough a unique parameterization model for "touch and feel" in design stages.