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diff --git a/epan/dissectors/asn1/h450/Call-Hold-Operations.asn b/epan/dissectors/asn1/h450/Call-Hold-Operations.asn
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+-- Call-Hold-Operations.asn
+--
+-- Taken from ITU ASN.1 database
+-- http://www.itu.int/ITU-T/asn1/database/itu-t/h/h450.4/1999/Call-Hold-Operations.asn
+--
+
+-- Module Call-Hold-Operations (H.450.4:05/1999)
+Call-Hold-Operations {itu-t recommendation h 450 4 version1(0)
+  call-hold-operations(0)} DEFINITIONS AUTOMATIC TAGS ::=
+BEGIN
+
+IMPORTS
+  OPERATION, ERROR
+    FROM Remote-Operations-Information-Objects {joint-iso-itu-t
+      remote-operations(4) informationObjects(5) version1(0)}
+  EXTENSION, Extension{}
+    FROM Manufacturer-specific-service-extension-definition {itu-t
+      recommendation h 450 1 version1(0) msi-definition(18)}
+  notAvailable, invalidCallState, resourceUnavailable,
+    supplementaryServiceInteractionNotAllowed
+    FROM H4501-General-Error-List {itu-t recommendation h 450 1 version1(0)
+      general-error-list(1)}
+  NonStandardParameter
+    FROM H323-MESSAGES; -- see H.225.0
+
+CallHoldOperations OPERATION ::=
+  {holdNotific | retrieveNotific | remoteHold | remoteRetrieve}
+
+holdNotific OPERATION ::=
+  { -- sent from holding to held H.323 endpoint to invoke near-end call hold feature
+
+  ARGUMENT         HoldNotificArg
+  OPTIONAL         TRUE
+  RETURN RESULT    FALSE
+  ALWAYS RESPONDS  FALSE
+  CODE             local:101
+}
+
+HoldNotificArg ::= SEQUENCE {
+  extensionArg  SEQUENCE SIZE (0..255) OF MixedExtension OPTIONAL,
+  ...
+}
+
+retrieveNotific OPERATION ::=
+  { -- sent from holding to held H.323 endpoint to invoke retrieval of near-end call hold feature
+
+  ARGUMENT         RetrieveNotificArg
+  OPTIONAL         TRUE
+  RETURN RESULT    FALSE
+  ALWAYS RESPONDS  FALSE
+  CODE             local:102
+}
+
+RetrieveNotificArg ::= SEQUENCE {
+  extensionArg  SEQUENCE SIZE (0..255) OF MixedExtension OPTIONAL,
+  ...
+}
+
+remoteHold OPERATION ::=
+  { -- sent from holding to held H.323 endpoint to invoke remote-end call hold feature
+
+  ARGUMENT  RemoteHoldArg
+  OPTIONAL  TRUE
+  RESULT    RemoteHoldRes
+  OPTIONAL  TRUE
+  ERRORS
+    {notAvailable
+      | -- feature not available in combination with the basic service
+       invalidCallState | --hold not possible in current call state
+       resourceUnavailable | -- maximum number of calls on hold reached
+       supplementaryServiceInteractionNotAllowed |
+      
+      -- other supplementary service prohibits hold
+      undefined -- undefined reason--}
+  CODE      local:103
+}
+
+RemoteHoldArg ::= SEQUENCE {
+  extensionArg  SEQUENCE SIZE (0..255) OF MixedExtension OPTIONAL,
+  ...
+}
+
+RemoteHoldRes ::= SEQUENCE {
+  extensionRes  SEQUENCE SIZE (0..255) OF MixedExtension OPTIONAL,
+  ...
+}
+
+remoteRetrieve OPERATION ::=
+  { -- sent from holding to held H.323 endpoint to invoke retrieval of remote-end call hold feature
+
+  ARGUMENT  RemoteRetrieveArg
+  OPTIONAL  TRUE
+  RESULT    RemoteRetrieveRes
+  OPTIONAL  TRUE
+  ERRORS
+    {invalidCallState |
+      
+      -- Call to which retrieve request applies is not in state Hold_RE_Held
+      undefined -- undefined reason--}
+  CODE      local:104
+}
+
+RemoteRetrieveArg ::= SEQUENCE {
+  extensionArg  SEQUENCE SIZE (0..255) OF MixedExtension OPTIONAL,
+  ...
+}
+
+RemoteRetrieveRes ::= SEQUENCE {
+  extensionRes  SEQUENCE SIZE (0..255) OF MixedExtension OPTIONAL,
+  ...
+}
+
+MixedExtension ::= CHOICE {
+  extension        Extension{{ExtensionSet}},
+  nonStandardData  NonStandardParameter
+}
+
+ExtensionSet EXTENSION ::=
+  {...}
+
+-- Actual values defined by individual manufacturers
+undefined ERROR ::= {
+  PARAMETER  SEQUENCE SIZE (0..255) OF MixedExtension
+  OPTIONAL   TRUE
+  CODE       local:2002
+}
+
+END -- of Call-Hold-Operations
+
+-- Generated by Asnp, the ASN.1 pretty-printer of France Telecom R&D
+