The District is seeking a comprehensive IP communications system to support voice, data, security, video, and mobility products and applications. This system will enable more effective, more secure, more personal communications that directly affect both productivity and efficiency. The District is seeking a scalable, distributable, and highly available enterprise IP telephony call-processing solution. The District desires an integrated solution that includes network and voice infrastructure, security, mobility, and management products. The District is seeking an integrator that will provide flexible deployment/integration services, end-user training and leasing/financing options. District needs are continually evolving, and the District wants a system that evolves to meet those needs.