diff --git a/library/MGCP_Types.ttcn b/library/MGCP_Types.ttcn
index b56734c..01d4d3a 100644
--- a/library/MGCP_Types.ttcn
+++ b/library/MGCP_Types.ttcn
@@ -30,8 +30,8 @@
 	type charstring MgcpInfoCode ("B", "C", "I", "N", "X", "L", "M", "R",
 				      "S", "D", "O", "P", "E", "Z", "Q", "T",
 				      "RC", "LC", "A", "ES", "RM", "RD", "PL",
-				      "MD", "X-OSMO-CP", "X-OSMUX") with {
-		variant "TEXT_CODING(,convert=upper_case,'([BCINXLMRSDOPEZQTA])|(RC)|(LC)|(ES)|(RM)|(RD)|(PL)|(MD)|(X-OSMO-CP)|(X-OSMUX)',case_insensitive)"
+				      "MD", "X-OSMO-CP", "X-OSMO-IGN", "X-OSMUX") with {
+		variant "TEXT_CODING(,convert=upper_case,'([BCINXLMRSDOPEZQTA])|(RC)|(LC)|(ES)|(RM)|(RD)|(PL)|(MD)|(X-OSMO-CP)|(X-OSMO-IGN)|(X-OSMUX)',case_insensitive)"
 	};
 
 	/* 3.2.2.6 */