* mod_dlg saves the initial INVITE to DSMSession::last_req dlg.reply(code,reason); reply to the request in DSMSession::last_req (usually INVITE, if not yet replied) with code and reason dlg.acceptInvite([code, reason]); e.g. dlg.acceptInvite(183, progress); accept audio stream from last_req (INVITE), and reply with 200 OK (default) or code, reason