spandsp . fax问题，请大家指教!

Question

-- Executing Goto("SIP/211-084ff538", "ext-fax|in_fax|1") in new stack
-- Goto (ext-fax,in_fax,1)
-- Executing StopPlayTones("SIP/211-084ff538", "") in new stack
-- Executing GotoIf("SIP/211-084ff538", "1?3:analog_fax|1") in new stack
-- Goto (ext-fax,in_fax,3)
-- Executing Macro("SIP/211-084ff538", "faxreceive") in new stack
-- Executing Set("SIP/211-084ff538", "FAXFILE=/var/spool/asterisk/fax/1171318989.1.tif") in new stack
-- Executing Set("SIP/211-084ff538", "EMAILADDR=andy@cbsys.net") in new stack
-- Executing RxFAX("SIP/211-084ff538", "/var/spool/asterisk/fax/1171318989.1.tif") in new stack
pbx*CLI>
Disconnected from Asterisk server
Executing last minute cleanups

每次都执行到RxFAX()这句就出问题，就出现ASTERISK被关掉！不知道是什么问题，请大家指教，谢谢！
exten => 12345,1,txfax(/home/steveu/testfax.tif)   这也一样，一执行到这句，就提示那两句星被关闭！

Answer 1

是出问题了,连带*一起down了,换高版本的libtiff看看,还有问题单步调试.