[Asterisk-Users] problems with callback.agi script

[jonny hashem]

Hi:
i used this callback.agi script and  here what i ve
get :
  Executing Wait("OSS/dsp", "1") in new stack
    -- Executing AGI("OSS/dsp", "callback.agi") in new
stack
    -- Launched AGI Script
/var/lib/asterisk/agi-bin/callback.agi
Use of uninitialized value in string ne at
/var/lib/asterisk/agi-bin/callback.agi line 56,
<STDIN> line 14.
Nov 26 16:58:43 WARNING[8278]: file.c:475
ast_openstream: File
/var/lib/asterisk/agi-bin/get-phonenumber does not
exist in any format
Nov 26 16:58:43 WARNING[8278]: file.c:787
ast_streamfile: Unable to open
/var/lib/asterisk/agi-bin/get-phonenumber (format
slin): No such file or directory
MYCALLBACK: User Hungup (-1)
    -- AGI Script callback.agi completed, returning 0
    -- Executing Hangup("OSS/dsp", "") in new stack


what does this line means and what i have to change: 
Use of uninitialized value in string ne at
/var/lib/asterisk/agi-bin/callback.agi line 56,
<STDIN> line 14.


and in which directory i should put the sound files?



		
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