when reading mediaproxy module ice related sections, i found this: 5.7. ice_candidate_avp (string) Specification of the AVP which holds the ICE candidate that will be inserted in the SDP. The value specified in this AVP will override the value in ice_candidate module parameter. Note that if use_media_proxy() and end_media_session() functions are being used, the AVP will not be available in the reply route unless you set onreply_avp_mode from the tm module to '1', and if the AVP is not set, the default value will be used. kamailio tm module does not have onreply_avp_mode parameter. is it so that avps are automatically available in kamailio onreply_routes? if so, i'll fix the above text. -- juha ps. how mediaproxy module/madiaproxy handle ice makes sense to me, because it avoids the need for a separate turn server with its authentication problems.