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README update. Explain more what it is than just the history 

Change-Id: I7368a8a0927fa301dfbbe550b8090e783ab7be2e
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Harald Welte 2021-01-06 13:13:28 +01:00
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About OsmoMSC About OsmoMSC
============= =============
OsmoMSC originated from the OpenBSC project, which started as a minimalistic OsmoMSC is an implementation of the 3GPP MSC (Mobile Switching Centre)
all-in-one implementation of the GSM Network. In 2017, OpenBSC had reached network element. It implements the following core functionality within
maturity and diversity (including M3UA SIGTRAN and 3G support in the form of the 2G (GSM) and 3G (UMTS) networks:
IuCS and IuPS interfaces) that naturally lead to a separation of the all-in-one
approach to fully independent separate programs as in typical GSM networks.
OsmoMSC was one of the parts split off from the old openbsc.git. Before, it was * mobility management
the libmsc part of the old OsmoNITB. Since a true A interface and IuCS for 3G * call control (either via built-in MNCC handler or external osmo-sip-connector)
support is available, OsmoMSC exists only as a separate standalone entity. * USSD (exposed via GSUP)
* SMS (either via built-in SMSC or external via GSUP)
Historically, OsmoMSC originated from the OpenBSC project, which started
as a minimalistic all-in-one implementation of the GSM Network. In 2017,
OpenBSC had reached maturity and diversity (including M3UA SIGTRAN and
3G support in the form of IuCS and IuPS interfaces) that naturally lead
to a separation of the all-in-one approach to fully independent separate
programs as in typical GSM networks.
OsmoMSC was one of the parts split off from the old openbsc.git. Before,
it was the libmsc part of the old OsmoNITB. Since a true A interface and
IuCS for 3G support is available, OsmoMSC exists only as a separate
standalone entity.
OsmoMSC exposes OsmoMSC exposes
- GSUP towards OsmoHLR (or a MAP proxy); - GSUP towards OsmoHLR (or a MAP proxy);