I’m trying to use some “Dial” call limitation options (S,L) and then do some stuff with the original channel. However after using S or L options channels are Hangup and everything next in the dialplan is not executed.
show us your dialplan … we’re not mind readers.
what does spring immediately to mind though is the fact that normal dialplan execution doesn’t continue after a hangup except in the ‘h’ priority.
so here it is what I’m trying to do 
exten => 123,1,Dial(SIP/op|30|S(360)|g)
exten => 123,n,gM(say, SOME_INFO)
however using S() and L hangups everything despite the g option.
I’ve tried
exten => h,1,gM(say, SOME_INFO)
but the channel I get is quite unuseful.