The Public Access Mobile Radio(PAMR)and PoC market are perking up thanks to the wide adoption of Digital Mobile Radio technologies and mobile network availability. Another driving force is the changing mindset of enterprise users who now tend to buy communication services from a third party instead of purchasing, installing, and maintaining a radio system of their own. Besides the trend of flexible business operation, there are various unique user requirements that sustain this niche market for the service providers. For example, airports need seamless indoor and outdoor coverage and dispatching features; Transportation and Logistics companies operate across a wide area and rely heavily on real-time positioning. Successfully PAMR or PoC operators are sensitive to user requirement and experience. They swiftly adapt themselves to the changing market and sustain healthy business growth.