Function DENOISE not registered

Hi

Someone know how to solve this problem:

Asterisk interface:

[quote] – Executing [80080000@from-internal:1] Set(“SIP/101-00000004”, “DENOISE(rx)=on”) in new stack
[2012-10-24 21:13:46] ERROR[4394]: pbx.c:3749 ast_func_write: Function DENOISE not registered
– Executing [80080000@from-internal:2] Set(“SIP/101-00000004”, “DENOISE(tx)=on”) in new stack
[2012-10-24 21:13:46] ERROR[4394]: pbx.c:3749 ast_func_write: Function DENOISE not registered[/quote]

My context:

[from-internal-custom] exten => _X.,1,Set(DENOISE(rx)=on) exten => _X.,n,Set(DENOISE(tx)=on)

Solved, just install speex and speex-devel

yum install speex yum install speex-devel

and recompile Asterisk