OsmoMGW » History » Version 17
dexter, 08/10/2022 09:48 AM
1 | 1 | neels | h1. OsmoMGW |
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2 | |||
3 | 3 | laforge | OsmoMGW, the Osmocom Media Gateway, is a Media Gateway for handling user plane (voice) traffic in cellular networks. |
4 | 1 | neels | |
5 | 12 | laforge | OsmoMGW supports the IETF "MGCP":https://tools.ietf.org/html/rfc3435 (Media Gateway Control Protocol) for control from Call Agents, such as those present in [[OsmoBSC:]] and [[OsmoMSC:]]. |
6 | 3 | laforge | |
7 | 16 | dexter | At the moment (August 2022), OsmoMGW implements RTP proxy / RTP bridge type endpoints, to each of which two RTP connections can be established. It also implements RTP / E1 endpoints that allow bridging RTP voice streams to bit synchronous E1 lines. Since each codec uses a specific TRAU format, the codec support is currently limited to GSM-FR and GSM-EFR. |
8 | 3 | laforge | |
9 | We are planning to add endpoint types for |
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10 | * classic E1/T1 timeslots (64kBps alaw/ulaw) |
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11 | * announcement/playout end-points |
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12 | * conference endpoints |
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13 | |||
14 | OsmoMGW is the generalized version of an earlier much more special-purpsoe implementation called osmo-bsc_mgcp. |
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15 | |||
16 | h2. Situation in a typical Osmocom cellular network |
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17 | |||
18 | h3. Use by [[OsmoBSC:]] |
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19 | |||
20 | {{graphviz_link() |
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21 | digraph G { |
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22 | rankdir = LR; |
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23 | OsmoBTS -> OsmoBSC [label="Abis/IP"]; |
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24 | OsmoBSC -> OsmoMSC [label="3GPP AoIP"]; |
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25 | OsmoBSC -> OsmoMGW [label="MGCP"]; |
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26 | OsmoBTS -> OsmoMGW [label="RTP",dir=both]; |
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27 | 17 | dexter | OsmoMGW -> core network [label="RTP",dir=both]; |
28 | 3 | laforge | {rank=same OsmoBSC OsmoMGW} |
29 | OsmoMGW [color=red]; |
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30 | } |
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31 | }} |
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32 | |||
33 | 6 | fixeria | h3. Use by [[OsmoMSC:]] |
34 | 3 | laforge | |
35 | It is Planned to use OsmoMGW also from OsmoMSC like this: |
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36 | |||
37 | {{graphviz_link() |
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38 | digraph G { |
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39 | rankdir = LR; |
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40 | BTS -> BSC [label="Abis"]; |
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41 | BSC -> OsmoMSC [label="3GPP AoIP"]; |
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42 | OsmoMSC -> OsmoMGW [label="MGCP"]; |
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43 | BSC -> OsmoMGW [label="RTP",dir=both]; |
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44 | OsmoMSC -> OsmoSIP [label="MNCC"]; |
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45 | OsmoSIP -> PBX [label="SIP Trunk"]; |
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46 | OsmoMGW -> PBX [label="RTP",dir=both]; |
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47 | {rank=same OsmoMSC OsmoMGW} |
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48 | OsmoSIP [label="osmo-sip-connector"]; |
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49 | OsmoMGW [color=red]; |
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50 | |||
51 | hNodeB -> OsmoHNBGW [label="Iuh"]; |
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52 | 5 | laforge | OsmoHNBGW -> OsmoMSC [label="IuCS"]; |
53 | 3 | laforge | hNodeB -> OsmoMGW [label="RTP",dir=both]; |
54 | } |
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55 | }} |
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56 | |||
57 | 10 | laforge | {{include(cellular-infrastructure:MacroBinaryPackages)}} |
58 | |||
59 | 2 | neels | h2. User Manuals |
60 | 1 | neels | |
61 | 13 | daniel | * osmo-mgw user manual: http://ftp.osmocom.org/docs/latest/osmomgw-usermanual.pdf |
62 | 7 | laforge | * osmo-mgw VTY reference: http://ftp.osmocom.org/docs/latest/osmomgw-vty-reference.pdf |
63 | 3 | laforge | |
64 | 11 | laforge | h2. Source code |
65 | |||
66 | 15 | laforge | The source code is available from @gitea.osmocom.org@ (module @osmo-mgw@). |
67 | 11 | laforge | |
68 | Public read-only access is available via |
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69 | <pre> |
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70 | 15 | laforge | git clone https://gitea.osmocom.org/cellular-infrastructure/osmo-mgw |
71 | 11 | laforge | </pre> |
72 | |||
73 | 15 | laforge | You can browse it via gitea: https://gitea.osmocom.org/cellular-infrastructure/osmo-mgw |
74 | 11 | laforge | |
75 | Contributions are welcome via [[cellular-infrastructure:Gerrit]]. |
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76 | |||
77 | 8 | laforge | h2. Test Suite |
78 | |||
79 | We have a TTCN-3 test suite as part of our [[cellular-infrastructure:Titan_TTCN3_Testsuites]] |
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80 | 15 | laforge | * source code: https://gitea.osmocom.org/ttcn3/osmo-ttcn3-hacks/src/branch/master/mgw |
81 | 8 | laforge | * results: https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-mgw-test/ |
82 | |||
83 | 3 | laforge | h2. Contact |
84 | |||
85 | 9 | laforge | * Contact us via the openbsc@ mailing list, see [[cellular-infrastructure:Mailing Lists]]. |
86 | * Contributions are welcome via [[cellular-infrastructure:Gerrit]]. |
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87 | 15 | laforge | * Git repository browser at https://gitea.osmocom.org/cellular-infrastructure/osmo-mgw |
88 | 14 | laforge | |
89 | {{include(cellular-infrastructure:MacroCommercialSupport)}} |