[Asterisk-Users] Background command noanswer option

[Mark morris]

Hello List,

I am an Asterisk newbie, and I got a question about Asterisk Background 
command's option "noanswer":

What is required from the user agent, such as a SIP phone, to be able to 
hear the playback without Answer()?

I'm asking this because when I used X-Lite, I could hear the the audio file 
but when I used a hardware phone (an ATA in fact) I couldn't hear it. The 
ATA supports G711u, which is the codec I set for the peer. Only when I 
change the dial plan to Answer(), then Background(file, skip)in 
extension.conf could I hear the audio using the ATA. Seems if the channel 
must be answered for it to hear it. Is there something required from the ATA 
to support the noanswer feature? If so, what is it?

Thank you in advance.

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