i am trying to have CUBE to generate ringback tones for inbound SIP
calls on behalf of  our SIPserver that is sitting behind CUBE and it
does not generate Ringback and since CUBE does not natively generate
tones, i wonder if someone can help me with an IVR TCL script to make
CUBE play ringback tone twards ITSP as soon as it receives SIP 180 w/SDP message from the internal SIPserver

Thanks in advance.