asterisk users - Sep 2005 - sending fax....i'm in trouble !

hi all,
i've this problem with app_txfax. Here's the log of the error:

Sep  8 13:28:55 VERBOSE[10750]:     -- Attempting call on Zap/g1/2430 for 
application txfax(/var/tmp/ast_fax-1126178934.10240.1804289383.0|caller) 
(Retry 1)
Sep  8 13:28:55 DEBUG[10750]: Using channel 3
Sep  8 13:28:55 WARNING[10750]: Unable to allocate channel structure
Sep  8 13:28:55 NOTICE[10750]: Unable to request channel Zap/g1/2430
Sep  8 13:28:55 NOTICE[10750]: Call failed to go through, reason 0

please help me !!!! i'm desperate !!!

Oz

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