[asterisk-users] don't hear start/begin of voiceprompts

[Mein Name]

Hi all,

I just want to setup new voiceprompts for serveral queues in our 
asterisk pbx (Version 1.2.41.2.4)

The Problem is, that I don't hear the start (or the first part) of the 
voiceprompt.
It makes no differece if I use the "Playback" or "Background" Command.

But it makes a difference if the prompt is played automatically during 
entering the queue ore if I playback the file "manually" by typing "3" 
for example:


exten => s,7,Background(01_ni_asterisk-b)   -> missing "start" part at 
beginning of  prompt
exten => 3,1,Playback(01_ni_asterisk-b)        -> sound is ok (whole 
soundfile is played)

Here is my "extensions_queues.conf"

[menu-it]
exten => s,1,Set(LANGUAGE()=de)
exten => s,2,system(/bin/echo ${LANGUAGE} > /tmp/LANGUAGE)
include => sipint
exten => s,3,Answer
exten => s,4,SetMusicOnHold(default)
exten => s,5,Set(TIMEOUT(digit)=3)
exten => s,6,Set(TIMEOUT(response)=16)
exten => s,7,Background(01_ni_asterisk-b)
exten => s,8,Background(queue-menu-announcement)
exten => s,9,SetCallerID(IT Queue: 0${CALLERID})
exten => s,10,Queue(queue-it|t)
exten => s,11,Playback(nbdy-avail-to-take-call)
exten => s,12,Voicemail(u1700) ;
exten => s,13,Set(LANGUAGE()=en)
exten => #,1,Hangup
exten => t,1,Hangup
exten => o,1,Goto(menu-office,s,1)
exten => i,1,Playback(invalid)
exten => i,2,WaitExten
exten => 3,1,Playback(01_ni_asterisk-b)
exten => 4,1,Playback(02_ni_asterisk-b)




Thanks for any help.

morel