OSMO HnbGW - issue with real Ericsson SGSN

Hi, I'm running OsmoHNBGW version 1.2.1.13.be9e.202204110026 and OsmoSTP version 1.5.0.15.64dd.202204110026. When a mobile is @ home, and then roams to our network, a "Routing area update request" (SCCP connection request ) is sent by osm-hnbgw to our SGSN. But the message is ignored by our SGSN, we need to study this further, but we do see some errors related to SCCP in the hnbgw log: 20220411100428998 DMAIN INFO 002448ffff0d2770.servicesnode.spidercloud.com Creating new Mapping RUA CTX 0x558d149bba80/30 <-> SCU Conn ID 0x558d149779a0/1529 (context_map.c:94) 20220411100444098 DLSCCP ERROR SCCP-SCOC(1529)[0x558d14ad2230]{CONN_PEND_OUT}: Event N-DATA.req not permitted (sccp_scoc.c:1772) 20220411100448629 DLSCCP ERROR SCCP-SCOC(1529)[0x558d14ad2230]{CONN_PEND_OUT}: Event N-DATA.req not permitted (sccp_scoc.c:1772) 20220411100453031 DLSCCP ERROR SCCP-SCOC(1528)[0x558d14acb9d0]{WAIT_CONN_CONF}: transition to state IDLE not permitted! (sccp_scoc.c:1031) 20220411100529016 DLSCCP ERROR SCCP-SCOC(1529)[0x558d14ad2230]{WAIT_CONN_CONF}: transition to state IDLE not permitted! (sccp_scoc.c:1031) 20220411100550019 DMAIN INFO 002448ffff0d2770.servicesnode.spidercloud.com Creating new Mapping RUA CTX 0x558d149bba80/30 <-> SCU Conn ID 0x558d149779a0/1530 (context_map.c:94) 20220411100605018 DLSCCP ERROR SCCP-SCOC(1530)[0x558d14ad82b0]{CONN_PEND_OUT}: Event N-DATA.req not permitted (sccp_scoc.c:1772) 20220411100609648 DLSCCP ERROR SCCP-SCOC(1530)[0x558d14ad82b0]{CONN_PEND_OUT}: Event N-DATA.req not permitted (sccp_scoc.c:1772) 20220411100626108 DMAIN INFO 002448ffff0d2770.servicesnode.spidercloud.com Creating new Mapping RUA CTX 0x558d149bba80/30 <-> SCU Conn ID 0x558d149779a0/1531 (context_map.c:94) 20220411100641058 DLSCCP ERROR SCCP-SCOC(1531)[0x558d14ad1c50]{CONN_PEND_OUT}: Event N-DATA.req not permitted (sccp_scoc.c:1772) 20220411100645648 DLSCCP ERROR SCCP-SCOC(1531)[0x558d14ad1c50]{CONN_PEND_OUT}: Event N-DATA.req not permitted (sccp_scoc.c:1772) 20220411100650021 DLSCCP ERROR SCCP-SCOC(1530)[0x558d14ad82b0]{WAIT_CONN_CONF}: transition to state IDLE not permitted! (sccp_scoc.c:1031) So we think this might be related. The bottom line is that mobile does not attempt a PS attach. When checking logs for successful RA updates, we see that SGSN receives a standalone SCCP Connection request, this is answered with connection confirmed, and the RA update req comes in with SCCP message type DT1 instead of connection request. Hope someone can help. Best Regards Sjur Thomas Lien Systems engineer Roaming & Network access Telenor Maritime +47 91602376 Kystveien 2D N-4841 Arendal, Norway www.telenormaritime.com<http://www.telenormaritime.com/> LinkedIn<https://www.linkedin.com/company/telenor-maritime/> [/Users/rinomartinsen/Dropbox (ANTI)/Telenor/2_Projects/TNO036_digitizing and renewal of the telenor identity/FINAL/Toolkit/Logo/Symbol/RGB/pdf/telenor_symbol_blue.pdf] Internal