OsmoMSC » History » Version 8
laforge, 10/21/2017 07:02 PM
| 1 | 1 | neels | h1. OsmoMSC |
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| 3 | 4 | laforge | OsmoMSC is the Osmocom implementation of a Mobile Switching Center (MSC). |
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| 5 | It implements the following interfaces: |
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| 6 | * 3GPP AoIP over M3UA or SUA towards BSCs, for example [[OsmoBSC:]], possibly via a STP like [[OsmoSTP:]] |
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| 7 | * Osmocom GSUP towards an HLR such as [[OsmoHLR:]] |
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| 8 | * SMPP v3.4 for external SMS entities (minimal SMSC is built-in) |
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| 9 | * MGCP for controlling an external Media Gateway like [[OsmoMGW:]] |
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| 10 | 5 | laforge | * MNCC for external call-control handlers, such as [[osmo-sip-connector:]] for SIP trunks |
| 11 | 4 | laforge | * Osmocom VTY interface for configuration + introspection |
| 12 | * Osmocom CTRL interface for programmatic access to internal state/configuration |
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| 13 | |||
| 14 | 6 | laforge | h2. Position in a typical network |
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| 16 | 4 | laforge | {{graphviz_link() |
| 17 | digraph G { |
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| 18 | rankdir = LR; |
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| 19 | OsmoBTS -> OsmoBSC [label="Abis/IP"]; |
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| 20 | OsmoBSC -> OsmoMSC [label="3GPP AoIP"]; |
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| 21 | 8 | laforge | hNodeB -> OsmoHNBGW [label="Iuh"]; |
| 22 | OsmoHNBGW -> OsmoMSC [label="IuCS"]; |
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| 23 | 4 | laforge | OsmoMSC -> OsmoHLR [label="GSUP"]; |
| 24 | OsmoMSC -> OsmoSIP [label="MNCC"]; |
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| 25 | OsmoMSC [color=red]; |
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| 26 | OsmoSIP [label="osmo-sip-connector"]; |
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| 27 | 8 | laforge | OsmoSIP -> PBX [label="SIP Trunk"]; |
| 28 | 4 | laforge | } |
| 29 | }} |
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| 30 | |||
| 31 | h2. History |
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| 32 | |||
| 33 | OsmoMSC was the result of splitting [[OsmoNITB:]] into three parts during the 2017 NITB-split. Parts of [[OsmoNITB:]] became [[OsmoBSC:]], other parts became [[OsmoHLR:]], while the mobility management, call control and SMS handling became [[OsmoMSC:]]. At the time of the rewrite, the entire MSC and VLR state machines have been properly re-implemented using "osmo-fsm":http://ftp.osmocom.org/api/latest/libosmocore/core/html/group__fsm.html |
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| 34 | |||
| 35 | 7 | laforge | h2. Manuals |
| 36 | |||
| 37 | * "osmomsc-usermanual.pdf":http://ftp.osmocom.org/docs/latest/osmomsc-usermanual.pdf |
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| 38 | * "osmomsc-vty-reference.pdf":http://ftp.osmocom.org/docs/latest/osmomsc-vty-reference.pdf |
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| 39 | |||
| 40 | 4 | laforge | h2. Contact |
| 41 | |||
| 42 | * Contact us via the openbsc@ mailing list, see [[Cellular Infrastructure:Mailing Lists]]. |
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| 43 | * Contributions are welcome via [[Cellular Infrastructure:Gerrit]]. |
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| 44 | * Git repository browser at https://git.osmocom.org/osmo-msc |
