Cellmgr ng » History » Version 3
laforge, 08/10/2022 07:02 AM
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| 2 | 2 | h2. The cellmgr_ng project |
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| 4 | 3 | laforge | The cellmgr_ng was initially written to allow to hook a BTS/BSC behind a traditional E1 link with MTPL1, MTPL2, MTPL3 to a soft switch supporting the the ipaccess protocol. The MTPL1 |
| 5 | and MTPL2 is handled by a vendor solution right now, everything starting from MTPL3 is available in source. The code supports interfacing with the hardware encoders and can send |
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| 6 | 1 | and receive RTP with AMR and is controlled with the MGCP protocol. |
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| 9 | 3 | laforge | h3. Applications |
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| 11 | h4. cellmgr_ng |
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| 13 | This application implements forwarding of SCCP from the MTPL3 linkset to the IPA protocol, it supports connection tracking to work around implementation problems of various BSCs |
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| 14 | 1 | and to handle the event of network disconnection without taking the MTP Linkset down. |
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| 17 | 1 | h4. udt_relay |
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| 19 | 3 | laforge | A simple version of the cellmgr_ng that just relays between the MTPL3 linkset and the connection to a MSC or similiar system. |
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| 22 | 1 | h4. osmo_stp |
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| 24 | 3 | laforge | This a Signalling Transfer Point or a Media Gateway. It can handle a MTP L3 linkset and a M2UA connection. Right now it does not support fail over in M2UA but this can be added |
| 25 | 1 | easily. It has basic support for ISUP blocking/unblocking/reset. |
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| 28 | h4. mgcp_mgw |
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| 30 | 3 | laforge | Use the [[OpenBSC]] MGCP Protocol and Network implementation and interface with the hardware to provide the gateway from E1/T1 to IP/RTP. |
