[Freeswitch-dev] Freeswitch supports QoS and Silence Suppression?

Hi, now I write the proposal by using freeswitch. And I want to know that freeswitch supports QoS protocol (like diffserv, MPLS, ip QoS, RSVP, SBM so on) and Silence Suppression I can’t find the contents the upper articles at freeswitch.org site. Plz, let me know that asap… Thank you!!