ios - Outgoing call is auto rejected -

i using quickblox (2.6.3) in app implement video chat.incoming call function working whenever try make call (i.e outgoing call) specific user,the following method called

- (void)session:(qbrtcsession *)session rejectedbyuser:(nsnumber *)userid userinfo:(nsdictionary *)userinfo { 

where receiver receives call , before accept call above method called while receiver unaware of rejection,and call not ended on receiver side.receiver portal. set following parameters not getting success

[qbrtcconfig setanswertimeinterval:45]; [qbrtcconfig setdisconnecttimeinterval:30]; [qbrtcconfig setdialingtimeinterval:10]; [qbsettings setautoreconnectenabled:true]; [qbsettings setreconnecttimerinterval:3]; 

please me missing.thanks.