path: root/openbsc/src/mgcp/mgcp_protocol.c
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authorPau Espin Pedrol <pespin@sysmocom.de>2021-04-27 18:20:15 +0200
committerPau Espin Pedrol <pespin@sysmocom.de>2021-04-29 14:22:33 +0200
commit6710670cb14a6bafb8c708e0ec673428a36a92bd (patch)
treec051f42f5347044223fe85ac4cd0a6282db69c0e /openbsc/src/mgcp/mgcp_protocol.c
parenta361cab54a6404572c76ac36e127fc3e3e4ceaab (diff)
Fill Last Used E-UTRAN PLMN Id when in CSFBHEADmaster
Since recently, osmo-bsc behaves strictly as per specs, meaning it will only send the "Cell selection indicator after release of all TCH and SDCCH IE" in RR Channel Release iff: * "Last Used E-UTRAN PLMN Id" was received in the CommonID sent MSC->BSC * "Last Used E-UTRAN PLMN Id" was received insider "old BSS to new BSS Information" in the HandoverRequest sent MSC->BSC. On the other hand, CSFB_Indicator from ClearCommand MSC->BSC is nw ignored and not taken into account. Hence, let's update osmo-msc to also behave correctly by sending the Last Used E-UTRAN PLMN ID at CommonID tx time to avoid regressions in CSFB support when running against newer osmo-bsc. Let's keep sending the CSFB Indicator in ClearCommand as we used too, in order to keep compatibility with older BSCs (as per spec). Related: SYS#5337 Change-Id: Ic5f175b179973d0a50d94f00e15f5a3e332605fc
Diffstat (limited to 'openbsc/src/mgcp/mgcp_protocol.c')
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