diff --git a/102232-6/PstnIsdnPDU.asn b/102232-6/PstnIsdnPDU.asn
index 0983a7efa1bc842c6b92cbdddb947bdd1cde1f27..39fb18aaa5291a818df75c529fcc0ed21775fba3 100644
--- a/102232-6/PstnIsdnPDU.asn
+++ b/102232-6/PstnIsdnPDU.asn
@@ -1,7 +1,3 @@
--- ===============================
--- Description of the PstnIsdn PDU
--- ===============================
-
 PstnIsdnPDU
 {itu-t(0) identified-organization(4) etsi(0) securityDomain(2) lawfulIntercept(2) li-ps(5) pstnIsdn(6) version5(5)}
 
@@ -10,8 +6,6 @@ BEGIN
 
 IMPORTS
 
-	
-
 	-- from TS 102 232-01 [2]
 	PayloadDirection
 		FROM LI-PS-PDU
@@ -22,10 +16,12 @@ IMPORTS
 -- Object Identifier Definition
 -- ============================
 
+pstnIsdnPDUObjId RELATIVE-OID	::= {li-ps(5) pstnIsdn(6) version5(5)}
+pstnIsdnIRIObjId RELATIVE-OID	::= {pstnIsdnPDUObjId iRI(1)}
+pstnIsdnCCObjId RELATIVE-OID	::= {pstnIsdnPDUObjId cC(2)}
+
 	-- definitions are relative to
 	-- {itu-t(0) identified-organization(4) etsi(0) securityDomain(2) lawfulintercept(2)}
-pstnIsdnIRIObjId RELATIVE-OID	::= {li-ps(5) pstnIsdn(6) version5(5) iRI(1)}
-pstnIsdnCCObjId RELATIVE-OID	::= {li-ps(5) pstnIsdn(6) version5(5) cC(2)}
 
 
 -- ===============================
@@ -74,7 +70,7 @@ SupplementaryInfo ::= SEQUENCE
 InformationAppliesTo ::= SEQUENCE
 	-- Identifies the PDUs to which a piece of supplementary information applies
 {
-	payloadDirection		[0] PayloadDirection,
+	payloadDirection		[0] LI-PS-PDU.PayloadDirection,
 		-- The direction of the traffic to which this info applies
 	cCLinkID				[1] INTEGER (0..65535) OPTIONAL,
 		-- If there are multiple CCLinks, this field states CCLink to which this info applies