that's work know i don't know where is the problem but i folowed the links bellow: http://www.guardiani.us/index.php/TrixBox_IAXModem_HylaFax#Satisfy_HylaFax_Deps http://www.ecualug.org/?q=2007/02/27/comos/como_recibir_fax_en_asterisk http://threebit.net/mail-archive/asterisk-users/msg04703.html thank you;