diff --git a/102232-5/IPMultimediaPDU.asn b/102232-5/IPMultimediaPDU.asn
index d70768d6e317678923593920530fc57507fff441..c54c46133c80ff9197bbea582403a2d161bd5e6f 100644
--- a/102232-5/IPMultimediaPDU.asn
+++ b/102232-5/IPMultimediaPDU.asn
@@ -51,7 +51,9 @@ IPMMCC ::= SEQUENCE
 		-- May contain c= and m= lines extracts for instance
 	mMCCprotocol				[4] MMCCprotocol OPTIONAL
 		-- Used to identify the protocol of packets sent in MMCCContent (RTP, UDPTL, MSRP, etc.)
-		-- Absence means mMCCContents contains RTP/RTCP packets
+		-- Absence means mMCCContents contains RTP/RTCP packets or audio frame as indicated by the 
+		-- frameType parameter. 
+
 }
 
 FrameType ::= ENUMERATED