The GSM MAP API is primarily used in the wireless network to provide services like automatic roaming, authentication, intersystem hand off, short message service, etc. on a GSM or UMTS network. All wireless network elements like the MSC, HLR, VLR, SMSC, EIR and AUC use this messaging protocol to communicate among them.
The Accelero™ GSM MAP suite offers an extensive set of APIs for developing traditional to next generation mobile applications for a variety of network elements. Convenient and easy to use, it offers a host of interfaces catering to requirements for all the phases in the evolution of GSM MAP protocol:
Phase 1 & 2 - compliant APIs may find potential usage in deploying:

• Traditional VLR/EIR/HLR/AuC solutions performing MS location management, authentication and subscriber data management services.
• Typical first generation MSC applications offering call handling and non call related supplementary services.
• Short Message Service (SMS) capability located at HLR or a Short Message Center (SMSC).
• OAM-application for provisioning, monitoring and administering cellular services.

Phase 2+ APIs lay down added functionalities suited for more advanced mobile application development, such as:

• Applications catering to emerging packet network standards like GPRS
• Call processor agents offering value added services such as Group Calls, Broadcast Calls.
• Upgrades to existing programs for anytime database queries concerning updated user profile (ProvideSubscriberInformation) or MS location retrieval (AnyTimeInterrogation/ATI).

Phase 3 APIs extend the capabilities of existing nodes for supporting:

• Location Services logic to provide a wide array of solutions leveraging most recent position information of the subscriber, as in case of emergency calls etc.