Specifications include, but are not limited to: Qualified consultants to advise the project on best practices for implementing a countywide transition of buildings with Distributed Antenna Systems (DAS) to the new PSERN system, using the same set of frequencies. This advisory work will include a recommended plan of all identified public safety DAS – in both publically and privately-owned buildings – within King County to the new PSERN system. The plan should include nationwide best practices, lessons learned from similar types of systems, and solutions that will have the least amount of impact on owners of buildings with DAS. It is currently estimated that there are between 380 – 500 DAS, countywide, with a variety of equipment that will need to be notified and transitioned to PSERN. An inventory of these systems is planned to be performed concurrently to this RFP.