[asterisk-r2] Sending backward tones

[Guilherme Peron]

Hello,

I'm using asterisk 1.6.0.27 and openr2 1.3.0.
When trying to make incoming calls to asterisk to busy phones, openr2 does
not send a congestion/busy tone to the PSTN.
Firstly it sends "line is free, don't charge", then it sends a clearback.
Does anybody knows if there is any patch or configuration to change this
behaviour?

Thanks,
Guilherme
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