h4504.asn

asn格式文件的编译器

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