diff --git a/asn1/rua/RUA-Constants.asn b/asn1/rua/RUA-Constants.asn
new file mode 100644
index 0000000..636b4d5
--- /dev/null
+++ b/asn1/rua/RUA-Constants.asn
@@ -0,0 +1,55 @@
+-- **************************************************************
+--
+-- Constant definitions
+--
+-- **************************************************************
+
+RUA-Constants { 
+itu-t (0) identified-organization (4) etsi (0) mobileDomain (0) 
+umts-Access (20) modules (3) rua(5) version1 (1) rUA-Constants (4) } 
+
+DEFINITIONS AUTOMATIC TAGS ::= 
+
+BEGIN
+
+IMPORTS
+	ProcedureCode,
+	ProtocolIE-ID
+FROM RUA-CommonDataTypes;
+
+
+-- **************************************************************
+--
+-- Elementary Procedures
+--
+id-Connect						ProcedureCode ::= 1
+id-DirectTransfer					ProcedureCode ::= 2
+id-Disconnect						ProcedureCode ::= 3
+id-ConnectionlessTransfer				ProcedureCode ::= 4
+id-ErrorIndication					ProcedureCode ::= 5
+id-privateMessage					ProcedureCode ::= 6
+
+-- **************************************************************
+--
+-- Lists
+--
+-- **************************************************************
+maxNrOfErrors						INTEGER ::= 256
+
+-- **************************************************************
+--
+-- IEs
+--
+-- **************************************************************
+
+id-Cause						ProtocolIE-ID ::= 1
+id-CriticalityDiagnostics				ProtocolIE-ID ::= 2
+id-Context-ID						ProtocolIE-ID ::= 3
+id-RANAP-Message					ProtocolIE-ID ::= 4
+id-IntraDomainNasNodeSelector				ProtocolIE-ID ::= 5
+id-Establishment-Cause					ProtocolIE-ID ::= 6
+id-CN-DomainIndicator					ProtocolIE-ID ::= 7
+id-CSGMembershipStatus 					ProtocolIE-ID ::= 9
+
+ 
+END