[asterisk-users] Dial Plan Application(main-menu)

[asterisk at opensourcesolution.in]

hi,
i have configured a dial plan in which i need that when a call comes
to extention user should hear "main-menu" . 

version of asterisk
is,

Asterisk 1.6.0.17 

my dial plan  

/extensions.conf

[internal]
exten
=> 2000,1,Dial(Sip/2000)
exten => 2000,2,Answer()
exten =>
2000,3,Background(main-menu)
exten => 2000,4,WaitExten(5)

the problem is
that when call comes it answers but backgroup main menu dosent play,for
test purpose i had done 

exten => 2000,3,Background(hello-world) 

i am
able to hear hello-world but not able to hear main menu. 

cheers 
 
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