180 or 183 with SDP

I’d like to be able to send early media from the called party to the calling party (both of which are SIP UAs) and typically, this is done using 180/183 with SDP. Is there a way to get Asterisk to propagate the early media? When I send 180 with SDP from the UAS to the UAC with Asterisk in the middle, Asterisk sends a 180 with NO SDP.