The evolution of multiple-services business gateways (MSBGs) targeted at the small business with fewer than 20 employees, and the rapidly expanding managed services market, pose severe challenges to embedded system architectures. MSBGs provide the entire IT data infrastructure of small businesses, including secure remote connectivity and network services such as file sharing, web services, and corporate email. The more advanced of these appliances also provide converged PBX telephony services that incorporate both PSTN and ITSP trunking, corporate voice messaging, and auto-attendant capabilities. This white paper examines one award-winning MSBG and its goals to meet the following demands of a rapidly evolving market.