README update. Explain more what it is than just the history
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README
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README
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About OsmoMSC
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=============
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OsmoMSC originated from the OpenBSC project, which started as a minimalistic
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all-in-one implementation of the GSM Network. In 2017, OpenBSC had reached
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maturity and diversity (including M3UA SIGTRAN and 3G support in the form of
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IuCS and IuPS interfaces) that naturally lead to a separation of the all-in-one
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approach to fully independent separate programs as in typical GSM networks.
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OsmoMSC is an implementation of the 3GPP MSC (Mobile Switching Centre)
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network element. It implements the following core functionality within
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the 2G (GSM) and 3G (UMTS) networks:
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OsmoMSC was one of the parts split off from the old openbsc.git. Before, it was
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the libmsc part of the old OsmoNITB. Since a true A interface and IuCS for 3G
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support is available, OsmoMSC exists only as a separate standalone entity.
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* mobility management
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* call control (either via built-in MNCC handler or external osmo-sip-connector)
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* USSD (exposed via GSUP)
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* SMS (either via built-in SMSC or external via GSUP)
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Historically, OsmoMSC originated from the OpenBSC project, which started
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as a minimalistic all-in-one implementation of the GSM Network. In 2017,
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OpenBSC had reached maturity and diversity (including M3UA SIGTRAN and
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3G support in the form of IuCS and IuPS interfaces) that naturally lead
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to a separation of the all-in-one approach to fully independent separate
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programs as in typical GSM networks.
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OsmoMSC was one of the parts split off from the old openbsc.git. Before,
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it was the libmsc part of the old OsmoNITB. Since a true A interface and
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IuCS for 3G support is available, OsmoMSC exists only as a separate
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standalone entity.
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OsmoMSC exposes
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- GSUP towards OsmoHLR (or a MAP proxy);
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