Hello! As per our investigation, FreeSWITCH (v1.10.2) does not take off the hold state when receiving SIP INVITE without SDP (RFC 6337). It answers with 200 OK/SDP with *a=recvonly* (expecting *a=sendrecv* and taking off from the hold state). After setting channel variable *sip_unhold_nosdp=true*, FreeSWITCH starts sending correct 200 OK/SDP, but it does not restore the media stream (calling side hears MOH). How to solve this problem? -- BR, Denys Pozniak