The TIA/EIA-41 library allows for the implementation of carrier-grade, mobile network signaling infrastructure targeted to the CDMA, TDMA, and AMPS networks and is the basis for providing their mobility characteristics. The premise behind TIA/EIA-41 is to connect the distributed switching elements, called mobile switching centers (MSCs) with a master database called the Home Location Register (HLR) and other centralized network databases. The HLR dynamically stores the current location and profile of a mobile network subscriber. The HLR is consulted during the processing of an incoming call. Via TIA/EIA-41 the HLR is updated as the subscriber moves about the network and is serviced by different switches within the network.
Although TIA/EIA-41 is similar to GSM MAP, TIA/EIA-41 includes, as part of its specification, the Wireless Intelligent Network, or WIN standards. WIN is similar to CAMEL in GSM however unlike CAMEL, which is an independent specification, WIN is integrated into TIA/EIA-41. In addition, WIN phase 1 and phase 2 were specified in extensions IS-771 and IS-826, respectively, to earlier TIA/EIA-41 specifications. WIN phase 1 (IS-771) focuses on enabling calling name presentation, incoming call screening, and voice controlled type services. WIN phase 2 (IS-826) focuses on enabling prepaid charging, Freephone, and premium rate type services.
Wireless Intelligent Network (WIN) is based on an open industry standard that enables equipment from different suppliers to interoperate successfully, and allows automatic roaming between various networks. WIN standard is part of the TIA/EIA-41 family of standards, that allows additions of capabilities to any existing TIA/EIA-41-based network within an open vendor environment, to ensure full interoperability with third-party products and services. Network operators will be able to add WIN capabilities to any TIA/EIA-41 based wireless networks by upgrading switching systems, typically with software upgrades, and installing new network elements such as Service Control Points (SCPs), Service Nodes (SNs), or Intelligent Peripherals (IPs). Further deployment of WIN capabilities will allow operators to create and deploy value-added services and enhanced features rapidly. WIN solutions can now be deployed for networks based on AMPS, Code Division Multiple Access (CDMA), or Time Division Multiple Access (TDMA) technology to satisfy 800 or 1900 MHz requirements.
The WIN capabilities that have been developed so far are service independent. The following three standards packages have been or are being developed by the TIA (Telecommunications Industry Association) TR-45 Engineering Committee:
- Package 1 (WIN phase I): Defines the architecture, provides a set of triggers and capabilities for basic call origination and call termination, and supports basic services such as calling name presentation, incoming call screening and voice controlled services (standards documentation has been published as TIA/EIA/IS-771).
- Package 2 (WIN phase II): Adds additional triggers and capabilities, and supports charging services such as prepaid, Freephone, premium rate, and advice of charging (standards documentation has been recommended for publication as TIA/EIA/IS-826 for prepaid and 848 for other charging services).
- Package 3 (WIN phase III): Adds additional triggers and capabilities, and supports location based services such as location based charging, fleet and asset management, location based information service, and enhanced calling routing (standard documentation is currently being under development and will be published as TIA/EIA/IS-843).
TIA/EIA-41 has several basic functions:
- Provides a mechanism for a Gateway-MSC (GMSC) to obtain a routing number for an incoming call
- Provides a mechanism for an MSC via integrated Visitor Location Register (VLR) to update subscriber status and routing number.
- Implements basic wireless intelligent network capabilities for providing routing and call control.
- Provides subscriber supplementary service profile data to switching elements via the VLR
The Signalware TIA/EIA-41 capability is an enabling component of the Signalware family. It is used in Network Elements such as:
- Home Location Registers (HLRs)
- Visitor Location Registers (VLRs)
- Mobile Switching Centers (MSCs)
Signalware's TIA/EIA-41 feature is utilized when an application sends or receives a network message. The application utilizes the TIA/EIA-41 library for message encoding and decoding. By utilizing Signalware's TIA/EIA-41 capability, vendors can significantly cut time to market and reduce support and maintenance costs.
Signalware TIA/EIA-41 is provided as a library to be used with the SS7 Transaction Capabilities Application Part (TCAP). The library may be accessed via a traditional SS7 stack or may be utilized with SIGTRAN. This flexibility allows the Signalware library to be used in implementing any of the elements requiring TIA/EIA-41 in all current generations of CDMA and TDMA mobile networks. Through the use of SIGTRAN, applications developed in second generation (2G) networks can be migrated to a common packet network and be utilized in NexGen mobile networks- protecting investments and aiding network evolution.
Features:
- Implements TIA/EIA-41 revision D, E and portions of F
- Support for wireless emergency services (J-STD-036 Rev B)
- Complies with 3GPP2 specifications
- Supports ASN.1 encoding/decoding of all the standard operations-related messages exchanged in the TIA/EIA-41 interfaces
- Runs over ANSI and ETSI TCAP
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