[asterisk-users] Music On Hold

[Cyprus VoIP]

Hello,

We need help in debugging Music On Hold on our Asterisk 1.6.1.6

 From the SIP debug, I see that an extension sends an INVITE of the call 
to the Asterisk, whenever the HOLD or Transfer buttons are pressed, but 
I don't see in the console any reference to the call being placed on hold.

When I typed "moh show files", I see the wav files of the 
/var/lib/asterisk/moh folder.

How can I debug this?

Thanks.