[Freeswitch-users] How can I keep the A-leg from establishing early media (and playing ringback in-band) until after the B-leg answers the call?

My specific use case is an inbound Skype call using mod_skypopen to a SIP phone. I would like the Skype call to keep ringing as a Skype call (not a PSTN call) until the B-leg is answered. The default behaviour is the Skype call is answered by freeswitch and ringback is played over the established Skype call. Thanks in advance, Jason