[Openbts-discuss] menu-style USSD support in OpenBTS 5.0

[<mud...@ya...>]

Hello
I am trying to get a menu-style USSD working on OpenBTS 5.0.Currently it only supports a single request-response style USSD.
I was able to change the OperationCode flag from notify to request so that I has able to reply with a menu-option, but I get parse error
2015-09-30T10:48:50.7 L3SupServ.cpp:660:machineRunState:  state=0xb3a Machine=(MOSSDMachine tid=102 C0T0 SDCCH/4-0 CCState=null PopState=1)  l3msg=L3SSFacility( MTI = Facility TI = 2 facility=(SupServFacilityIE(size=19 components: rawdata=a211020103300c02013c300704010f04023219 ussd=))) sipmsg=(null DialogMessage) imsi= Imsi=***************** Tmsi=(no tmsi) Imei=""2015-09-30T10:48:50.7 L3SupServ.cpp:466:ssParseData: Error parsing Supplementary Service message:no operation code tag
2015-09-30T10:48:50.7 L3SupServ.cpp:558:ssMap2Ussd: ComponentType=0xa2 invokeID=0x3 linkID=0x0 opCode=0x28 ok=0

Has anyone had any experience regarding this ?
Any help would be really appreciated