Cisco AS5400 Series Universal Gateways support a wide range of IP-based value-added services such as high-volume Internet access, regional/branch-office connectivity, corporate virtual private networks (VPNs), mobile wireless solutions, long distance for Internet service providers (ISPs), international wholesale long distance, distributed prepaid calling, Signaling System 7 (SS7) interconnect, and enhanced voice services. The Cisco AS5400HPX provides enhanced performance for processor-intensive voice and fax applications.Cisco Any Service, Any Port (ASAP) architecture enables Cisco AS5400 Series Universal Gateways to operate simultaneously as a network access server (NAS) and a voice gateway, delivering universal services on any port at any time. Cisco AS5400 Series ASAP services include dial access, real-time voice and fax, wireless data access, and unified communications on a call-by-call basis. Cisco AS5400 Series Universal Gateways achieve cost savings through optimized utilization of the universal port access infrastructure. Service providers can now quickly capitalize on new opportunities and realize multiple revenue streams from a single access infrastructure. The Cisco ASAP architecture is based on universal DSP technology. The universal DSP can execute multiple coder/decoder (codec) and modem algorithms on any DSP at any time. When the type of codec or modem required for a specific call has been determined, the DSP activates the appropriate service type in real time.