[incoming]
exten => s,1,GotoIfTime(9:00-13:00|mon-fri|*|*?dia,s,1)
exten => s,2,GotoIfTime(14:00-20:00|mon-fri|*|*?dia,s,1)
exten => s,3,GotoIfTime(20:01-23:59|mon-fri|*|*?noche,s,1)
exten => s,4,GotoIfTime(13:01-13:59|mon-fri|*|*?noche,s,1)
exten => s,5,GotoIfTime(00:00-8:59|mon-fri|*|*?noche,s,1)
exten => s,6,GotoIfTime(00:00-23:59|sat-sun|*|*?noche,s,1)

exten => 4801,1,Dial(SIP/501)
exten => 4800,1,Goto(calling-cards,s,1)
exten => 02,1,Goto(incoming,s,1)