The global outlook series on Push-to-Talk Technology provides a collection of market briefs, concise summaries and highlights of research findings. The report offers a rudimentary overview of the industry with an on-the-fly focus on the US market, and details trends, such as, changing customer perceptions, market acceptence, and adoption of PTT services, emerging customer clusters i.e. young mobile subscribers, and use of PTT services by service providers as a tool for differentiation. Factors challenging the market such as interoperability & inter carrier issues are also covered. Regional markets elaborated upon include United States, Europe, Asia-Pacific, and Latin America. The report also offers a recapitulation of noteworthy strategic corporate developments and service launches, in addition to providing an indexed, easy-to-refer, fact-finder directory listing the addresses, and contact details of major 95 companies worldwide.