gsm_prep

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MAP (Mobile Application Part) MAP (Mobile Application Part):  MAP is the protocol is to used to allow the GSM network nodes within the NSS to communicate with the each other to provide the service, such as roaming, SMS, Subscriber authentication. MAP is transported and encapsulated with the SS7 protocols MTP, SCCP, and TCAP. MAP Phase 2 operations can be divided into the following main categories: • Mobility Management • Operation and Maintenance • Call Handling • Supplementary Services • Short Message Service Mobility Management: Mobility management operations can be divided into the following categories: • Location Management  • Paging and Search • Access Management • Handover  • Authentication Management  • Security Management • IMEI Management  • Subscriber Management  • Identity Management  • Fault Recovery Location Management: To minimize transactions with the HLR, it only contains location information about the MSC/VLR to which the subscriber is attached.The VLR contains more detailed location information, such as the location area in which the subscriber is actually roaming. VLR requires that its location information be updated each time the subscriber changes location area.The HLR only requires its location information to be updated if the subscriber changes VLR.

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