OsmoMSC » History » Version 4
laforge, 10/21/2017 03:12 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 | * MNCC for external call-control handlers, such as [[osmo-sip-comnnector:]] for SIP trunks |
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11 | * Osmocom VTY interface for configuration + introspection |
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12 | * Osmocom CTRL interface for programmatic access to internal state/configuration |
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14 | {{graphviz_link() |
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15 | digraph G { |
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16 | rankdir = LR; |
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17 | OsmoBTS -> OsmoBSC [label="Abis/IP"]; |
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18 | OsmoBSC -> OsmoMSC [label="3GPP AoIP"]; |
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19 | OsmoMSC -> OsmoHLR [label="GSUP"]; |
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20 | OsmoMSC -> OsmoSIP [label="MNCC"]; |
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21 | OsmoMSC [color=red]; |
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22 | OsmoSIP [label="osmo-sip-connector"]; |
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23 | } |
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24 | }} |
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26 | h2. History |
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28 | 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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30 | h2. Contact |
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32 | * Contact us via the openbsc@ mailing list, see [[Cellular Infrastructure:Mailing Lists]]. |
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33 | * Contributions are welcome via [[Cellular Infrastructure:Gerrit]]. |
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34 | * Git repository browser at https://git.osmocom.org/osmo-msc |