I saw that you can restrict calls for simultaneous trunk
But if you want to limit the concurrent calls on a specific route out?
I saw that my route out “Office” is described in /etc/asterisk/extensions_additional.conf
[outrt-1] ; Ufficio
exten => _.,1,Macro(user-callerid,LIMIT,EXTERNAL,)
exten => _.,n,Gosub(sub-record-check,s,1(out,${EXTEN},dontcare))
exten => .,n,ExecIf($[ “${CALLEEACCOUNCODE}” != “” ] ?Set(CDR(accountcode)=${CALLEE_ACCOUNCODE}))
exten => _.,n,Set(MOHCLASS=${IF($["${MOHCLASS}"=""]?default:${MOHCLASS})})
exten => .,n,Set(NODEST=)
exten => _.,n,Macro(dialout-trunk,2,${EXTEN},on)
exten => _.*,n,Macro(outisbusy,)
and you can insert a line to prevent more than n simultaneous calls?