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neels, 03/17/2017 11:15 PM


The OsmoMSC arose by separating the BSC and HLR from the historical OsmoNITB. For 3G, we needed a standalone MSC without being tied to BSC, and for an asynchronous subscriber storage that can be used by both voice and data services, we needed a separate OsmoHLR, which also added support for Milenage authentication.

At the time of writing (March 2017), the OsmoMSC exists only on the vlr_3G branch of openbsc.git. However, future development of the Osmocom circuit-switched core network will center around the OsmoMSC, while OsmoNITB will be reduced to legacy. Watch this space...