Re: [PATCH] Check if ussd is busy when doing ss

>> It's still not clear how ss and ussd interfere with each other. Current >> decision is each ss (call-barring, call-forwarding, etc.) has >> interference with ussd, but there is no interference within these ss. >> That is, call-barring has interference with ussd, but call-barring has >> no interference with call-forwarding. > >There is only one signaling channel for the supplementary services. >Only one supplementary service operation can be active at a time. (Or >two, network can initiate ussd notify or request while >mobile-originated ussd is pending.) Thank you for the info. When you say only one MO ss operation can be active at a time, do you mean modem will serialize them or oFono needs always to take care, or it's hardware specific?