[Freeswitch-users] FS to answer a call with ZRTP and do text-to-speech of SaS

Hi all, i would like to call from the product my company is going to release (www.privatewave.com, mobile voice encryption with ZRTP for Nokia, iPhone, Blackberry, Android) a FS extension and, without the ZRTP enrollment, having the extension to be answered negotiating ZRTP and playing with Text to Speech the SaS . Is this possible with current FS/ZRTP integration? Fabio