section "ortp options"
-option "host" i "ip or host to receive rtp packets from" string default="224.0.1.38" no
-option "port" p "udp port." int typestr="portnumber" default="1500" no
-option "jitter_compensation" j "non-zero values enable ortp's adaptive jitter compensation" int typestr="milliseconds" default="400" no
+option "host" i "ip or host to receive rtp packets from" string default="224.0.1.38" optional
+option "port" p "udp port." int typestr="portnumber" default="1500" optional
+option "jitter_compensation" j "set ortp's adaptive jitter compensation" int typestr="milliseconds" default="0" optional