IP Multimedia Subsystem (IMS) Home Subscriber Server
The IMS home subscriber server (HSS) is the central subscriber database for next-generation IP and GSM networks. It is part of the evolution of the HLR as part of IMS standardization. The HSS design usually follows a distributed database model serving both IMS applications (CSCF) and GSM applications (HLR). HSS's are generally designed to support multiple subscriber types including VoIP, Wi-Fi, GSM/GPRS and 3G mobile subscribers. Managing one profile per subscriber dramatically reduces network complexity and operational expenditures, allows a single source for a subscriber's provisioning, and enables new, intelligent call routing.

What products does PT provide for this application?
PT's IPnexus Application-Ready System is an ideal foundation for building an IMS home subscriber server. This platform configuration includes:
Packet-based Platforms: Bundled with the industry's broadest line of 10/100 and Gigabit Ethernet switches, comprehensive shelf management and high-density power supplies, these platforms give equipment manufacturers and system integrators the basis to go beyond five-nines availability while handling the high-performance computing requirements of next-generation, packet-based systems.
Single Board Computers: High-performance, standards-based application processors designed for carrier grade telecom and Internet applications requiring exceptional processing power and high availability.
T1/E1/J1 Adapters: Complete line of high-performance T1/E1/J1 products provides the ideal development platforms for today's communication and networking applications. Empowering these hardware platforms is a complete offering of enabling software and middleware solutions including PT's NexusWare Software Suite Linux distribution and WAN Protocol Software (Radar Receiver, X.25, Frame Relay, etc.). This combination of hardware and software from a single supplier was created to ease your integration efforts and allow you to concentrate on applications.
Storage Blades: Customers can create a highly reliable, secure and managed IP storage solution for a fraction of the cost and space of traditional SAN approaches. These storage solutions provide standards-based disk access using iSCSI, NFS and SAMBA/CIFS, and offer up to 500GB of total storage per board, and additional 120GB with RTM.
Signaling Gateway Blades: For companies building/developing 3G MSC nodes based on standard CompactPCI hardware, the Signaling Gateway Blade can be used to fulfill the SS7/IP interworking function.
Enabling Software: NexusWare Software Suite: PT's Carrier Grade Linux distribution software.