IP Multimedia Subsystem

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IP Multimedia Subsystem

An integrated network for telecommunications carriers that uses the IP protocol as its foundation for packetized voice, video and data. Supporting voice over IP (VoIP) in all its flavors (SIP, H.323, MGCP, etc.), the IP Multimedia Subsystem (IMS) is designed to interface with the PSTN and provide traditional telephony services such as 800 numbers, caller ID and local number portability.

Converged Wireless and Wireline
Part of the 3GPP project, the IMS was conceived to offer full support for every type of communications session in today's world whether over wireless or landline, including instant messaging (IM), push-to-talk, videoconferencing and video-on-demand (VOD). It is the 21st century initiative for carrier networks supporting IP convergence. See LTE, 3GPP, VoIP and IP on Everything.
References in periodicals archive ?
In addition, the platform includes the Mobility Management Entity (MME), Serving Gateway (SGW), Packet Data Network Gateway (PGW), Home Subscriber Server (HSS), Voice over LTE and Circuit Switched Fallback to the existing GSM network.
NT-HLR) and Home Subscriber Server (HSS) along with NetAct.
Additionally, Nokia Networks will provide its software for Subscriber Data Management (SDM), including One-NDS and its Home Subscriber Server (HSS).
On its part, Ericsson said in a statement Wednesday that along with its Radio Base Station (RBS) 600 family of base stations, it is supplying Evolved Packet Core (EPC) technology, Home Subscriber Server (HSS) software for data management as well as Operating Support System (OSS) and project management support.
tier one customers selected the DSR to provide the subscriber locator function (SLF) in the LTE architecture that maps between a subscriber identity and a Home Subscriber Server (HSS), a database of subscriber profile information.
Technology solutions provider HP (NYSE: HPQ) announced on Monday that Hutchison 3G (H3G) Austria, a communication service provider (CSP) in Austria, has deployed the HP Home Subscriber Server (HSS) as the core of a new, long-term evolution (LTE) network.
Anchored by Bridgewater's Subscriber Data Broker(TM), the portfolio of carrier-grade and standards-based products includes the Bridgewater(R) Service Controller (AAA), the Bridgewater(R) Policy Controller (PCRF) and the Bridgewater(R) Home Subscriber Server (HSS).
Data in many of these telecom companies resides in pockets in Home Location Register (HLRs) or Home Subscriber Server (HSS).
The platforms also include Home Subscriber Server (HSS) and Equipment Identity Register (EIR) functionality, which consolidates the subscriber data.
The Home Subscriber Server (HSS) serves as master database for both networks (IMS and GPRS) and stores user related information for mobility, session and services management [4].
The 3G and 4G mobile packet core tests validated the high performance and scalability of Bridgewater's control plane solution - the Bridgewater(R) Home Subscriber Server (HSS) and Policy Controller (PCRF) - and the Cisco ASR 5000 under conditions which are representative of a large, data-centric Tier 1 service provider network with one million active subscribers and high mobile data transaction rates.
The consolidation is far more efficient than managing multiple databases for different applications, including Home Location Register (HLR), Home Subscriber Server (HSS) and converged Data Authentication, and provides a converged platform that makes it easier to create and deliver new services, he added.