extensions.conf
search for SetCallerPres and check that all number near the s are consecutive
cercare SetCallerPres e verificare che i numeri accanto alla s siano consecutivi
GOOD
exten = s,1,ExecIf($[ "${CALLERID(num)}"="" ]?SetCallerPres(unavailable))
exten = s,2,ExecIf($[ "${CALLERID(num)}"="" ]?Set(CALLERID(all)=unknown <0000000>))
BAD
exten = s,1,ExecIf($[ "${CALLERID(num)}"="" ]?SetCallerPres(unavailable))
exten = s,1,ExecIf($[ "${CALLERID(num)}"="" ]?Set(CALLERID(all)=unknown <0000000>))
bye