OsmoMGW » History » Revision 15
Revision 14 (laforge, 03/04/2020 08:27 PM) → Revision 15/28 (laforge, 07/25/2022 07:49 AM)
h1. OsmoMGW OsmoMGW, the Osmocom Media Gateway, is a Media Gateway for handling user plane (voice) traffic in cellular networks. 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:]]. At the moment (October 2017), OsmoMGW only implements RTP proxy / RTP bridge type endpoints, to each of which two RTP connections can be established. We are planning to add endpoint types for * classic E1/T1 timeslots (64kBps alaw/ulaw) * classic E1/T1 16k sub-slots with TRAU frames for classic BTS support * announcement/playout end-points * conference endpoints OsmoMGW is the generalized version of an earlier much more special-purpsoe implementation called osmo-bsc_mgcp. h2. Situation in a typical Osmocom cellular network h3. Use by [[OsmoBSC:]] {{graphviz_link() digraph G { rankdir = LR; OsmoBTS -> OsmoBSC [label="Abis/IP"]; OsmoBSC -> OsmoMSC [label="3GPP AoIP"]; OsmoBSC -> OsmoMGW [label="MGCP"]; OsmoBTS -> OsmoMGW [label="RTP",dir=both]; OsmoMGW -> OsmoMSC [label="RTP",dir=both]; {rank=same OsmoBSC OsmoMGW} OsmoMGW [color=red]; } }} h3. Use by [[OsmoMSC:]] It is Planned to use OsmoMGW also from OsmoMSC like this: {{graphviz_link() digraph G { rankdir = LR; BTS -> BSC [label="Abis"]; BSC -> OsmoMSC [label="3GPP AoIP"]; OsmoMSC -> OsmoMGW [label="MGCP"]; BSC -> OsmoMGW [label="RTP",dir=both]; OsmoMSC -> OsmoSIP [label="MNCC"]; OsmoSIP -> PBX [label="SIP Trunk"]; OsmoMGW -> PBX [label="RTP",dir=both]; {rank=same OsmoMSC OsmoMGW} OsmoSIP [label="osmo-sip-connector"]; OsmoMGW [color=red]; hNodeB -> OsmoHNBGW [label="Iuh"]; OsmoHNBGW -> OsmoMSC [label="IuCS"]; hNodeB -> OsmoMGW [label="RTP",dir=both]; } }} {{include(cellular-infrastructure:MacroBinaryPackages)}} h2. User Manuals * osmo-mgw user manual: http://ftp.osmocom.org/docs/latest/osmomgw-usermanual.pdf * osmo-mgw VTY reference: http://ftp.osmocom.org/docs/latest/osmomgw-vty-reference.pdf h2. Source code The source code is available from @gitea.osmocom.org@ @git.osmocom.org@ (module @osmo-mgw@). Public read-only access is available via <pre> git clone https://gitea.osmocom.org/cellular-infrastructure/osmo-mgw git://git.osmocom.org/osmo-mgw.git </pre> You can browse it via gitea: cgit: https://gitea.osmocom.org/cellular-infrastructure/osmo-mgw https://git.osmocom.org/osmo-mgw Contributions are welcome via [[cellular-infrastructure:Gerrit]]. h2. Test Suite We have a TTCN-3 test suite as part of our [[cellular-infrastructure:Titan_TTCN3_Testsuites]] * source code: https://gitea.osmocom.org/ttcn3/osmo-ttcn3-hacks/src/branch/master/mgw http://git.osmocom.org/osmo-ttcn3-hacks/tree/mgw * results: https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-mgw-test/ h2. Contact * Contact us via the openbsc@ mailing list, see [[cellular-infrastructure:Mailing Lists]]. * Contributions are welcome via [[cellular-infrastructure:Gerrit]]. * Git repository browser at https://gitea.osmocom.org/cellular-infrastructure/osmo-mgw https://git.osmocom.org/osmo-mgw {{include(cellular-infrastructure:MacroCommercialSupport)}}