diff --git a/33128/r17/TS33128Payloads.asn b/33128/r17/TS33128Payloads.asn
index a0ec4d8e3a8df84021faf5ee91c997b46a59a702..1b5552b7dac3ed6020c58da15f1314d404a8603a 100644
--- a/33128/r17/TS33128Payloads.asn
+++ b/33128/r17/TS33128Payloads.asn
@@ -169,6 +169,9 @@ XIRIEvent ::= CHOICE
     n9HRPDUSessionInfo                                  [100] N9HRPDUSessionInfo,
     s8HRBearerInfo                                      [101] S8HRBearerInfo,
 
+    -- STIR SHAKEN and RCD/eCNAM Events, see clause 7.X.2
+    sTIRSHAKENSignatureGeneration                       [2581] STIRSHAKENSignatureGeneration,
+    sTIRSHAKENSignatureValidation                       [2582] STIRSHAKENSignatureValidation,
     -- IMS events, see clause 7.X.4.2
     iMSMessage                                          [2721] IMSMessage,
     startOfInterceptionForActiveIMSSession              [2722] StartOfInterceptionForActiveIMSSession,
@@ -335,6 +338,10 @@ IRIEvent ::= CHOICE
 
     -- tag 100 is reserved because there is no equivalent n9HRPDUSessionInfo in IRIEvent.
     -- tag 101 is reserved because there is no equivalent S8HRBearerInfo in IRIEvent.
+    
+    -- STIR SHAKEN and RCD/eCNAM Events, see clause 7.X.3
+    sTIRSHAKENSignatureGeneration                       [2581] STIRSHAKENSignatureGeneration,
+    sTIRSHAKENSignatureValidation                       [2582] STIRSHAKENSignatureValidation,
 
     -- IMS events, see clause 7.X.4.2
     iMSMessage                                          [2721] IMSMessage,
@@ -2846,6 +2853,109 @@ SessionDirection ::= ENUMERATED
 
 HeaderOnlyIndication ::= BOOLEAN
 
+-- =================================
+-- STIR/SHAKEN/RCD/eCNAM definitions
+-- =================================
+
+-- See clause 7.X.2.1.2 for details of this structure
+STIRSHAKENSignatureGeneration ::= SEQUENCE
+{
+    pASSporTs [1] SEQUENCE OF PASSporT
+}
+
+-- See clause 7.X.2.1.3 for details of this structure
+STIRSHAKENSignatureValidation ::= SEQUENCE
+{
+    pASSporTs                 [1] SEQUENCE OF PASSporT OPTIONAL,
+    rCDTerminalDisplayInfo    [2] RCDDisplayInfo OPTIONAL,
+    eCNAMTerminalDisplayInfo  [3] ECNAMDisplayInfo OPTIONAL,
+    sHAKENValidationResult    [4] SHAKENValidationResult,
+    sHAKENFailureStatusCode   [5] SHAKENFailureStatusCode OPTIONAL
+}
+
+-- ================================
+-- STIR/SHAKEN/RCD/eCNAM parameters
+-- ================================
+
+PASSporT ::= SEQUENCE
+{
+    pASSporTHeader    [1] PASSporTHeader,
+    pASSporTPayload   [2] PASSporTPayload,
+    pASSporTSignature [3] OCTET STRING
+}
+
+PASSporTHeader ::= SEQUENCE
+{
+    type          [1] JWSTokenType,
+    algorithm     [2] UTF8String,
+    ppt           [3] UTF8String OPTIONAL,
+    x5u           [4] UTF8String
+}
+
+JWSTokenType ::= ENUMERATED
+{
+    passport(1)
+}
+
+PASSporTPayload ::= SEQUENCE
+{
+    issuedAtTime    [1] GeneralizedTime,
+    originator      [2] STIRSHAKENOriginator,
+    destination     [3] STIRSHAKENDestinations,
+    attestation     [4] Attestation,
+    origId          [5] UTF8String,
+    diversion       [6] STIRSHAKENDestination
+}
+
+STIRSHAKENOriginator ::= CHOICE
+{
+    telephoneNumber [1] STIRSHAKENTN,
+    sTIRSHAKENURI   [2] UTF8String
+}
+
+STIRSHAKENDestinations ::= SEQUENCE OF STIRSHAKENDestination
+
+STIRSHAKENDestination ::= CHOICE
+{
+    telephoneNumber [1] STIRSHAKENTN,
+    sTIRSHAKENURI   [2] UTF8String
+}
+
+
+STIRSHAKENTN ::= CHOICE 
+{
+    mSISDN [1] MSISDN
+}
+
+Attestation ::= ENUMERATED
+{
+    attestationA(1),
+    attestationB(2),
+    attestationC(3)
+}
+
+SHAKENValidationResult ::= ENUMERATED
+{
+    tNValidationPassed(1),
+    tNValidationFailed(2),
+    noTNValidation(3)
+}
+
+SHAKENFailureStatusCode ::= INTEGER
+
+ECNAMDisplayInfo ::= SEQUENCE
+{
+    name           [1] UTF8String,
+    additionalInfo [2] OCTET STRING OPTIONAL
+}
+
+RCDDisplayInfo ::= SEQUENCE
+{
+    name [1] UTF8String,
+    jcd  [2] OCTET STRING OPTIONAL,
+    jcl  [3] OCTET STRING OPTIONAL
+}
+
 -- ===================
 -- 5G LALS definitions
 -- ===================