The study discusses the U. S. telephony equipment (CPE) services markets. Telephony CPEs include enterprise telephone systems such as private branch exchanges (PBX), key telephone systems (KTS) and Internet Protocol (IP) private branch exchanges (IP PBX), and telephone terminals. Services discussed in this study include installation, contractual maintenance, services offered on a time-and-materials (T&M) basis including MACs, and professional services. The study discusses industry challenges, drivers, restraints and trends. It offer a competitive analysis and demand, pricing and revenue forecasts. Finally, it provides some strategic considerations and recommendations to industry participants.