Hello All,

I am working on get OpenBSC connected to a 3^rd party MSC, I read from the Osmo document that I can use the bsc only mode and the osm-bsc instead of the osmo-nitb.

Currently I had osmo-trx-uhd, osmo-bts-trx, osmo-bsc, and osmo-stp configured and and running, but I see a lot of below error logs in the osmo-stp console:

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DLSS7 <000c> osmo_ss7.c:1468 asp-asp-dyn-0: xua_srv_conn_cb(): sctp_recvmsg() returned 56 (flags=0x80)

DLM3UA <000f> m3ua.c:722 asp-asp-dyn-0: Received M3UA Message (XFER:DATA)

DLM3UA <000f> m3ua.c:541 asp-asp-dyn-0: m3ua_rx_xfer

DLM3UA <000f> m3ua.c:580 asp-asp-dyn-0: m3ua_rx_xfer(): M3UA data header: opc=337=0.42.1 dpc=185=0.23.1

DLSS7 <000c> osmo_ss7_hmrt.c:278 m3ua_hmdc_rx_from_l2(): dpc=185=0.23.1 not local, message is for routing

DLSS7 <000c> osmo_ss7_hmrt.c:258 MTP-TRANSFER.req for DPC 185: no route!

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On the BSC console, I am seeing a lot of:

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<0007> a_reset.c:106 A-RESET(msc-0)[0xb76ce0]{DISC}: (re)sending BSSMAP RESET message...

<0007> osmo_bsc_sigtran.c:93 Sending RESET to MSC: RI=SSN_PC,PC=0.23.1,SSN=BSSAP

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Can anyone identify what is the issue here?

Appreciates!

Regards,

Weiqi