MEDIA-GATEWAY-CONTROL-v3
{itu-t(0) recommendation(0) h(8) h248(248) 
 modules(0) media-gateway-control(0) version3(3)} 
DEFINITIONS AUTOMATIC TAGS ::= 
BEGIN 
       

MegacoMessage ::= SEQUENCE 
 { 
   authHeader     AuthenticationHeader OPTIONAL, 
   mess           Message 
 } 

AuthenticationHeader ::= SEQUENCE 
 { 
   secParmIndex   SecurityParmIndex, 
   seqNum         SequenceNum, 
   ad             AuthData 
 } 

SecurityParmIndex ::= OCTET STRING(SIZE(4)) 

SequenceNum       ::= OCTET STRING(SIZE(4)) 

AuthData          ::= OCTET STRING (SIZE (12..32)) 

Message ::= SEQUENCE 
 { 
   version           INTEGER(0..99), 
   -- The version of the protocol defined here is equal to 3. 
   mId               MId,  -- Name/address of message originator 
   messageBody CHOICE 
    { 
      messageError      ErrorDescriptor, 
      transactions      SEQUENCE OF Transaction 
    }, 
   ... 
 } 

MId ::= CHOICE 
 { 
   ip4Address           IP4Address, 
   ip6Address           IP6Address, 
   domainName           DomainName, 
   deviceName           PathName, 
   mtpAddress           OCTET STRING(SIZE(2..4)), 
   -- Addressing structure of mtpAddress: 
   --     25 - 15              0 
   --     |  PC           | NI | 
   --     24 - 14 bits    2 bits 
   -- Note: 14 bits are defined for international use. 
   -- Two national options exist where the point code is 16 or 24   
   -- bits. 
   -- To octet align the mtpAddress, the MSBs shall be encoded as 0s. 
   ... 
 } 

DomainName ::= SEQUENCE 
 { 
   name        IA5String, 
   -- The name starts with an alphanumeric digit followed by a 
   -- sequence of alphanumeric digits, hyphens and dots.  No two 
   -- dots shall occur consecutively. 
   portNumber     INTEGER(0..65535) OPTIONAL 
 } 

IP4Address ::= SEQUENCE 
 { 
   address        OCTET STRING (SIZE(4)), 
   portNumber     INTEGER(0..65535) OPTIONAL 
 } 

IP6Address ::= SEQUENCE 
 { 
   address        OCTET STRING (SIZE(16)), 
   portNumber     INTEGER(0..65535) OPTIONAL 
 } 

PathName ::= IA5String(SIZE (1..64)) 
-- See A.3 

Transaction ::= CHOICE 
 { 
   transactionRequest      TransactionRequest, 
   transactionPending      TransactionPending, 
   transactionReply        TransactionReply, 
   transactionResponseAck  TransactionResponseAck, 
   -- use of response acks is dependent on underlying transport 
   ...,
   segmentReply	      SegmentReply
 } 

TransactionId ::= INTEGER(0..4294967295)  -- 32-bit unsigned integer 

TransactionRequest ::= SEQUENCE 
 { 
   transactionId        TransactionId, 
   actions              SEQUENCE OF ActionRequest, 
   ... 
 } 

TransactionPending ::= SEQUENCE 
 { 
   transactionId        TransactionId, 
   ... 
 } 

TransactionReply ::= SEQUENCE 
 { 
   transactionId        TransactionId, 
   immAckRequired       NULL OPTIONAL, 
   transactionResult    CHOICE 
    { 
      transactionError   ErrorDescriptor, 
      actionReplies      SEQUENCE OF ActionReply 
    }, 
    ...,
    segmentNumber         SegmentNumber OPTIONAL,
    segmentationComplete  NULL OPTIONAL 
 } 

SegmentReply ::= SEQUENCE
 {
   transactionId         TransactionId,
   segmentNumber         SegmentNumber,
   segmentationComplete  NULL OPTIONAL,
   ...
 }

SegmentNumber ::= INTEGER(0..65535)

TransactionResponseAck ::= SEQUENCE OF TransactionAck 
TransactionAck ::= SEQUENCE 
 { 
   firstAck       TransactionId, 
   lastAck        TransactionId OPTIONAL 
 } 

ErrorDescriptor ::= SEQUENCE 
 { 
   errorCode      ErrorCode, 
   errorText      ErrorText OPTIONAL 
 } 

ErrorCode ::= INTEGER(0..65535) 
-- See clause 14 for IANA considerations with respect to error codes 
ErrorText ::= IA5String 

ContextID ::= INTEGER(0..4294967295) 
-- Context NULL Value: 0 
-- Context CHOOSE Value: 4294967294 (0xFFFFFFFE)  
-- Context ALL Value: 4294967295 (0xFFFFFFFF) 


ActionRequest ::= SEQUENCE 
 { 
   contextId            ContextID, 
   contextRequest       ContextRequest OPTIONAL, 
   contextAttrAuditReq  ContextAttrAuditRequest OPTIONAL, 
   commandRequests      SEQUENCE OF CommandRequest 
 } 

ActionReply ::= SEQUENCE 
 { 
   contextId         ContextID, 
   errorDescriptor   ErrorDescriptor OPTIONAL, 
   contextReply      ContextRequest OPTIONAL, 
   commandReply      SEQUENCE OF CommandReply 
 } 

ContextRequest ::= SEQUENCE 
 { 
   priority       INTEGER(0..15) OPTIONAL, 
   emergency      BOOLEAN OPTIONAL, 
   topologyReq    SEQUENCE OF TopologyRequest OPTIONAL, 
   ...,
   iepscallind    BOOLEAN OPTIONAL,
   contextProp    SEQUENCE OF PropertyParm OPTIONAL,
   contextList    SEQUENCE OF ContextID OPTIONAL
 } 
-- When returning a contextList, the contextId in the ActionReply 
-- construct will return the contextId from the associated ActionRequest.

ContextAttrAuditRequest ::= SEQUENCE 
 { 
   topology        NULL OPTIONAL, 
   emergency       NULL OPTIONAL, 
   priority        NULL OPTIONAL, 
   ...,
   iepscallind        NULL OPTIONAL,
   contextPropAud     SEQUENCE OF IndAudPropertyParm OPTIONAL,

   selectpriority     INTEGER(0..15) OPTIONAL,
   -- to select given priority

   selectemergency    BOOLEAN OPTIONAL,
   -- to select if emergency set/not set (T/F) 
   
   selectiepscallind  BOOLEAN OPTIONAL,
   -- to select if IEPS set/not set (T/F)

   selectLogic        SelectLogic OPTIONAL    -- default is AND
 } 

SelectLogic            ::= CHOICE
 {
   andAUDITSelect  NULL,     -- all selection conditions satisfied
   orAUDITSelect   NULL,     -- at least one selection condition satisfied
   ...
 }	


CommandRequest ::= SEQUENCE 
 { 
   command           Command, 
   optional          NULL OPTIONAL, 
   wildcardReturn    NULL OPTIONAL, 
   ... 
 } 

Command ::= CHOICE 
 { 
   addReq               AmmRequest, 
   moveReq              AmmRequest, 
   modReq               AmmRequest, 
   -- Add, Move, Modify requests have the same parameters 
   subtractReq          SubtractRequest, 
   auditCapRequest      AuditRequest, 
   auditValueRequest    AuditRequest, 
   notifyReq            NotifyRequest, 
   serviceChangeReq     ServiceChangeRequest, 
   ... 
 } 

CommandReply ::= CHOICE 
 { 
   addReply                AmmsReply, 
   moveReply               AmmsReply, 
   modReply                AmmsReply, 
   subtractReply           AmmsReply, 
   -- Add, Move, Modify, Subtract replies have the same parameters 
   auditCapReply           AuditReply, 
   auditValueReply         AuditReply, 
   notifyReply             NotifyReply, 
   serviceChangeReply      ServiceChangeReply, 
   ... 
 } 

TopologyRequest ::= SEQUENCE 
 { 
   terminationFrom         TerminationID, 
   terminationTo           TerminationID, 
   topologyDirection       ENUMERATED 
    { 
      bothway(0), 
      isolate(1), 
      oneway(2) 
    }, 
   ..., 
   streamID             	StreamID OPTIONAL,
   topologyDirectionExtension	ENUMERATED
    {
      onewayexternal(0),
      onewayboth(1),
      ...
    } OPTIONAL 
    -- This is not according to the standard, but without it
    -- the TopologyRequest will be useless since topologyDirection
    -- and topologyDirectionExtension are contradictory.
 } 

AmmRequest ::= SEQUENCE 
 { 
   terminationID        TerminationIDList, 
   descriptors          SEQUENCE OF AmmDescriptor, 
   -- At most one descriptor of each type (see AmmDescriptor) 
   -- allowed in the sequence. 
   ... 
 } 

AmmDescriptor ::= CHOICE 
 { 
   mediaDescriptor         MediaDescriptor, 
   modemDescriptor         ModemDescriptor, 
   muxDescriptor           MuxDescriptor, 
   eventsDescriptor        EventsDescriptor, 
   eventBufferDescriptor   EventBufferDescriptor, 
   signalsDescriptor       SignalsDescriptor, 
   digitMapDescriptor      DigitMapDescriptor, 
   auditDescriptor         AuditDescriptor, 
   ...,
   statisticsDescriptor    StatisticsDescriptor 
 } 


AmmsReply ::= SEQUENCE 
 { 
   terminationID        TerminationIDList, 
   terminationAudit     TerminationAudit OPTIONAL, 
   ... 
 } 

SubtractRequest ::= SEQUENCE 
 { 
   terminationID        TerminationIDList, 
   auditDescriptor      AuditDescriptor OPTIONAL, 
   ... 
 } 

AuditRequest ::= SEQUENCE 
 { 
   terminationID        TerminationID, 
   auditDescriptor      AuditDescriptor, 
   ...,
   terminationIDList    TerminationIDList OPTIONAL
 } 
-- terminationID shall contain the first termination in the
-- list when using the terminationIDList construct in AuditRequest

AuditReply ::= CHOICE 
 { 
   contextAuditResult   TerminationIDList, 
   error                ErrorDescriptor, 
   auditResult          AuditResult, 
   ...,
   auditResultTermList  TermListAuditResult
 } 

AuditResult ::= SEQUENCE 
 { 
   
   terminationID           TerminationID, 
   terminationAuditResult  TerminationAudit 
 } 

TermListAuditResult	::= SEQUENCE
 {
   terminationIDList       TerminationIDList,
   terminationAuditResult  TerminationAudit,
   ...
 }

TerminationAudit ::= SEQUENCE OF AuditReturnParameter 

AuditReturnParameter ::= CHOICE 
 { 
   errorDescriptor            ErrorDescriptor, 
   mediaDescriptor            MediaDescriptor, 
   modemDescriptor            ModemDescriptor, 
   muxDescriptor              MuxDescriptor, 
   eventsDescriptor           EventsDescriptor, 
   eventBufferDescriptor      EventBufferDescriptor, 
   signalsDescriptor          SignalsDescriptor, 
   digitMapDescriptor         DigitMapDescriptor, 
   observedEventsDescriptor   ObservedEventsDescriptor, 
   statisticsDescriptor       StatisticsDescriptor, 
   packagesDescriptor         PackagesDescriptor, 
   emptyDescriptors           AuditDescriptor, 
   ... 
 } 

AuditDescriptor ::= SEQUENCE 
 { 
   auditToken  BIT STRING 
    { 
      muxToken(0), modemToken(1), mediaToken(2), 
      eventsToken(3), signalsToken(4), 
      digitMapToken(5), statsToken(6), 
      observedEventsToken(7), 
      packagesToken(8), eventBufferToken(9) 
    } OPTIONAL, 
   ..., 
   auditPropertyToken SEQUENCE OF IndAuditParameter OPTIONAL 
 } 


IndAuditParameter ::= CHOICE 
 { 
   -- Note that the lower/upper case letters of the tags have 
   -- been changed. The same changes has been made in text...
   indAudMediaDescriptor         IndAudMediaDescriptor, 
   indAudEventsDescriptor        IndAudEventsDescriptor, 
   indAudEventBufferDescriptor   IndAudEventBufferDescriptor, 
   indAudSignalsDescriptor       IndAudSignalsDescriptor, 
   indAudDigitMapDescriptor      IndAudDigitMapDescriptor, 
   indAudStatisticsDescriptor    IndAudStatisticsDescriptor, 
   indAudPackagesDescriptor      IndAudPackagesDescriptor, 
   ... 
 } 

IndAudMediaDescriptor ::= SEQUENCE 
 { 
   
   termStateDescr    IndAudTerminationStateDescriptor OPTIONAL, 
   streams  CHOICE 
    { 
      oneStream      IndAudStreamParms, 
      multiStream    SEQUENCE OF IndAudStreamDescriptor 
    } OPTIONAL, 
   ... 
 } 

IndAudStreamDescriptor ::= SEQUENCE 
 { 
   streamID                StreamID, 
   streamParms             IndAudStreamParms 
 } 

IndAudStreamParms ::= SEQUENCE 
 { 
   localControlDescriptor  IndAudLocalControlDescriptor OPTIONAL, 
   localDescriptor         IndAudLocalRemoteDescriptor OPTIONAL, 
   remoteDescriptor        IndAudLocalRemoteDescriptor OPTIONAL, 
   ...,
   statisticsDescriptor    IndAudStatisticsDescriptor OPTIONAL
 } 

IndAudLocalControlDescriptor ::= SEQUENCE 
 { 
   streamMode              NULL OPTIONAL, 
   reserveValue            NULL OPTIONAL, 
   reserveGroup            NULL OPTIONAL, 
   propertyParms           SEQUENCE OF IndAudPropertyParm OPTIONAL, 
   ...,
   streamModeSel           StreamMode OPTIONAL
   -- must not have both streamMode and streamModeSel	
   -- if both are present only streamModeSel shall be honoured
 } 

IndAudPropertyParm ::= SEQUENCE 
 { 
   name            PkgdName, 
   ...,
   propertyParms   PropertyParm OPTIONAL 
 } 
--  to select based on property values 
--  AND/OR selection logic is specified at context level

IndAudLocalRemoteDescriptor ::= SEQUENCE 
 { 
   propGroupID    INTEGER(0..65535) OPTIONAL, 
   propGrps       IndAudPropertyGroup, 
   ... 
 } 

IndAudPropertyGroup ::= SEQUENCE OF IndAudPropertyParm 

IndAudTerminationStateDescriptor ::= SEQUENCE  
 { 
   propertyParms        SEQUENCE OF IndAudPropertyParm, 
   eventBufferControl   NULL OPTIONAL, 
   serviceState         NULL OPTIONAL, 
   ...,
   serviceStateSel      ServiceState OPTIONAL
   -- must not have both serviceState and serviceStateSel
   -- if both are present only serviceStateSel shall be honoured 
 } 

IndAudEventsDescriptor ::= SEQUENCE 
 { 
   requestID      RequestID OPTIONAL, 
   pkgdName       PkgdName, 
   streamID       StreamID OPTIONAL, 
   ... 
 } 

IndAudEventBufferDescriptor ::= SEQUENCE 
 { 
   eventName   PkgdName, 
   streamID    StreamID OPTIONAL, 
   ... 
 } 

IndAudSignalsDescriptor ::=CHOICE 
 { 
   signal         IndAudSignal, 
   seqSigList     IndAudSeqSigList, 
   ... 
 } 

IndAudSeqSigList ::= SEQUENCE 
 { 
   id             INTEGER(0..65535), 
   signalList     IndAudSignal OPTIONAL 
 } 

IndAudSignal ::= SEQUENCE 
 { 
   signalName       PkgdName, 
   streamID         StreamID OPTIONAL, 
   ...,
   signalRequestID  RequestID OPTIONAL 
 } 

IndAudDigitMapDescriptor ::= SEQUENCE 
 { 
   digitMapName   DigitMapName OPTIONAL 
 } 

IndAudStatisticsDescriptor ::= SEQUENCE  
 { 
   statName       PkgdName 
 } 

IndAudPackagesDescriptor ::= SEQUENCE 
 { 
   packageName       Name, 
   packageVersion    INTEGER(0..99), 
   ... 
 } 

NotifyRequest ::= SEQUENCE 
 { 
   terminationID              TerminationIDList, 
   observedEventsDescriptor   ObservedEventsDescriptor, 
   errorDescriptor            ErrorDescriptor OPTIONAL, 
   ... 
 } 

NotifyReply ::= SEQUENCE 
 { 
   terminationID           TerminationIDList, 
   errorDescriptor         ErrorDescriptor OPTIONAL, 
   ... 
 } 

ObservedEventsDescriptor ::= SEQUENCE 
 { 
   requestId               RequestID, 
   observedEventLst        SEQUENCE OF ObservedEvent 
 } 

ObservedEvent ::= SEQUENCE 
 { 
   eventName               EventName, 
   streamID                StreamID OPTIONAL, 
   eventParList            SEQUENCE OF EventParameter, 
   timeNotation            TimeNotation OPTIONAL, 
   ... 
 } 

EventName ::= PkgdName 

EventParameter ::= SEQUENCE 
 { 
   eventParameterName      Name, 
   value                   Value, 
   -- For use of extraInfo see the comment related to PropertyParm 
   extraInfo CHOICE 
    { 
      relation Relation, 
      range    BOOLEAN, 
      sublist  BOOLEAN 
    } OPTIONAL, 
   ... 
   
 } 

ServiceChangeRequest ::= SEQUENCE 
 { 
   terminationID           TerminationIDList, 
   serviceChangeParms      ServiceChangeParm, 
   ... 
 } 

ServiceChangeReply ::= SEQUENCE 
 { 
   terminationID           TerminationIDList, 
   serviceChangeResult     ServiceChangeResult, 
   ... 
 } 

-- For ServiceChangeResult, no parameters are mandatory.  Hence the 
-- distinction between ServiceChangeParm and ServiceChangeResParm. 
ServiceChangeResult ::= CHOICE 
 { 
   errorDescriptor            ErrorDescriptor, 
   serviceChangeResParms      ServiceChangeResParm 
 } 

WildcardField ::= OCTET STRING(SIZE(1)) 

TerminationID ::= SEQUENCE 
 { 
   wildcard       SEQUENCE OF WildcardField,  
   id             OCTET STRING(SIZE(1..8)), 
   ... 
 } 
-- See A.1 for explanation of wildcarding mechanism. 
-- Termination ID 0xFFFFFFFFFFFFFFFF indicates the ROOT Termination. 

TerminationIDList ::= SEQUENCE OF TerminationID 

MediaDescriptor ::= SEQUENCE 
 { 
   termStateDescr    TerminationStateDescriptor OPTIONAL, 
   streams           CHOICE 
    { 
      oneStream      StreamParms, 
      multiStream    SEQUENCE OF StreamDescriptor 
    } OPTIONAL, 
   ... 
 } 

StreamDescriptor ::= SEQUENCE 
 { 
   streamID                StreamID, 
   streamParms             StreamParms 
 } 

StreamParms ::= SEQUENCE 
 { 
   localControlDescriptor     LocalControlDescriptor OPTIONAL, 
   localDescriptor            LocalRemoteDescriptor OPTIONAL, 
   remoteDescriptor           LocalRemoteDescriptor OPTIONAL, 
   ...,
   statisticsDescriptor       StatisticsDescriptor OPTIONAL 
 } 

LocalControlDescriptor ::= SEQUENCE 
 { 
   streamMode        StreamMode OPTIONAL, 
   reserveValue      BOOLEAN OPTIONAL, 
   reserveGroup      BOOLEAN OPTIONAL, 
   propertyParms     SEQUENCE OF PropertyParm, 
   ... 
 } 

StreamMode ::= ENUMERATED  
 { 
   sendOnly(0), 
   recvOnly(1), 
   sendRecv(2), 
   inactive(3), 
   loopBack(4), 
   ... 
 } 

-- In PropertyParm, value is a SEQUENCE OF octet string.  When sent 
-- by an MGC the interpretation is as follows: 
-- empty sequence means CHOOSE 
-- one element sequence specifies value 
-- If the sublist field is not selected, a longer sequence means 
-- "choose one of the values" (i.e. value1 OR value2 OR ...) 
-- If the sublist field is selected, 
-- a sequence with more than one element encodes the value of a 
-- list-valued property (i.e. value1 AND value2 AND ...). 
-- The relation field may only be selected if the value sequence 
-- has length 1.  It indicates that the MG has to choose a value 
-- for the property. E.g. x > 3 (using the greaterThan 
-- value for relation) instructs the MG to choose any value larger 
-- than 3 for property x. 
-- The range field may only be selected if the value sequence 
-- has length 2.  It indicates that the MG has to choose a value 
-- in the range between the first octet in the value sequence and 
-- the trailing octet in the value sequence, including the 
-- boundary values. 
-- When sent by the MG, only responses to an AuditCapability request 
-- may contain multiple values, a range, or a relation field. 

PropertyParm ::= SEQUENCE 
 { 
   name        PkgdName, 
   value       SEQUENCE OF OCTET STRING, 
   extraInfo   CHOICE 
    { 
      relation    Relation, 
      range       BOOLEAN, 
      sublist     BOOLEAN 
    } OPTIONAL, 
   ... 
 } 

Name ::= OCTET STRING(SIZE(2)) 

PkgdName ::= OCTET STRING(SIZE(4)) 
-- represents Package Name (2 octets) plus Property, Event, 
-- Signal Names or Statistics ID. (2 octets) 
-- To wildcard a package use 0xFFFF for first two octets, choose 
-- is not allowed. To reference native property tag specified in 
-- Annex C, use 0x0000 as first two octets. 
-- To wildcard a Property, Event, Signal, or Statistics ID, use 
-- 0xFFFF for last two octets, choose is not allowed. 
-- Wildcarding of Package Name is permitted only if Property, 
-- Event, Signal, or Statistics ID are 
-- also wildcarded. 

Relation ::= ENUMERATED 
 { 
   greaterThan(0), 
   smallerThan(1), 
   unequalTo(2), 
   ... 
 } 

LocalRemoteDescriptor ::= SEQUENCE 
 { 
   propGrps SEQUENCE OF PropertyGroup, 
   ... 
 } 

PropertyGroup ::= SEQUENCE OF PropertyParm 

TerminationStateDescriptor ::= SEQUENCE  
 { 
   propertyParms        SEQUENCE OF PropertyParm, 
   eventBufferControl   EventBufferControl OPTIONAL, 
   serviceState         ServiceState OPTIONAL, 
   ... 
 } 

EventBufferControl ::= ENUMERATED 
 { 
   off(0), 
   lockStep(1), 
   ... 
 } 

ServiceState ::= ENUMERATED 
 { 
   test(0), 
   outOfSvc(1), 
   inSvc(2), 
   ... 
 } 

MuxDescriptor   ::= SEQUENCE 
 { 
   muxType           MuxType, 
   termList          SEQUENCE OF TerminationID, 
   nonStandardData   NonStandardData OPTIONAL, 
   ... 
 } 

MuxType ::= ENUMERATED 
 { 
   h221(0), 
   h223(1), 
   h226(2), 
   v76(3), 
   ..., 
   nx64k(4) 
 } 

StreamID ::= INTEGER(0..65535)   -- 16-bit unsigned integer 

EventsDescriptor ::= SEQUENCE 
 { 
   requestID      RequestID OPTIONAL, 
   -- RequestID must be present if eventList 
   -- is non empty 
   eventList      SEQUENCE OF RequestedEvent, 
   ... 
 } 

RequestedEvent ::= SEQUENCE 
 { 
   pkgdName       PkgdName, 
   streamID       StreamID OPTIONAL, 
   eventAction    RequestedActions OPTIONAL, 
   evParList      SEQUENCE OF EventParameter, 
   ... 
 } 

RegulatedEmbeddedDescriptor ::= SEQUENCE
 {
   secondEvent		 SecondEventsDescriptor OPTIONAL,
   signalsDescriptor	 SignalsDescriptor OPTIONAL,
   ...
 }

NotifyBehaviour ::= CHOICE
 {
   notifyImmediate	 NULL,
   notifyRegulated	 RegulatedEmbeddedDescriptor,
   neverNotify		 NULL,
   ...
 }

RequestedActions ::= SEQUENCE 
 { 
   keepActive            BOOLEAN OPTIONAL, 
   eventDM               EventDM OPTIONAL, 
   secondEvent           SecondEventsDescriptor OPTIONAL, 
   signalsDescriptor     SignalsDescriptor OPTIONAL, 
   ...,
   notifyBehaviour       NotifyBehaviour OPTIONAL,
   resetEventsDescriptor NULL OPTIONAL 
 } 

EventDM ::= CHOICE 
 { 
   digitMapName   DigitMapName, 
   digitMapValue  DigitMapValue 
 } 

SecondEventsDescriptor ::= SEQUENCE 
 { 
   requestID         RequestID OPTIONAL, 
   eventList         SEQUENCE OF SecondRequestedEvent, 
   ... 
 } 

SecondRequestedEvent ::= SEQUENCE 
 { 
   pkgdName          PkgdName, 
   streamID          StreamID OPTIONAL, 
   eventAction       SecondRequestedActions OPTIONAL, 
   evParList         SEQUENCE OF EventParameter, 
   ... 
 } 

SecondRequestedActions ::= SEQUENCE 
 { 
   keepActive            BOOLEAN OPTIONAL, 
   eventDM               EventDM OPTIONAL, 
   signalsDescriptor     SignalsDescriptor OPTIONAL, 
   ...,
   notifyBehaviour       NotifyBehaviour OPTIONAL,
   resetEventsDescriptor NULL OPTIONAL 
 } 

EventBufferDescriptor ::= SEQUENCE OF EventSpec 

EventSpec ::= SEQUENCE 
 { 
   eventName      EventName, 
   streamID       StreamID OPTIONAL, 
   eventParList   SEQUENCE OF EventParameter, 
   ... 
 } 


SignalsDescriptor ::= SEQUENCE OF SignalRequest 

SignalRequest ::= CHOICE 
 { 
   signal         Signal, 
   seqSigList     SeqSigList, 
   ... 
 } 

SeqSigList ::= SEQUENCE 
 { 
   id          INTEGER(0..65535), 
   signalList  SEQUENCE OF Signal 
 } 

Signal ::= SEQUENCE 
 { 
   signalName        SignalName, 
   streamID          StreamID OPTIONAL, 
   sigType           SignalType OPTIONAL, 
   duration          INTEGER (0..65535) OPTIONAL, 
   notifyCompletion  NotifyCompletion OPTIONAL, 
   keepActive        BOOLEAN OPTIONAL, 
   sigParList        SEQUENCE OF SigParameter, 
   ...,
   direction         SignalDirection OPTIONAL,
   requestID         RequestID OPTIONAL,
   intersigDelay     INTEGER (0..65535) OPTIONAL 
 } 

SignalType ::= ENUMERATED 
 { 
   brief(0), 
   onOff(1), 
   timeOut(2), 
   ... 
 } 

SignalDirection ::= ENUMERATED
 {
   internal(0),
   external(1),
   both(3),
   ...
 }

SignalName ::= PkgdName 

NotifyCompletion ::= BIT STRING 
 { 
   onTimeOut(0), onInterruptByEvent(1), 
   onInterruptByNewSignalDescr(2), otherReason(3), onIteration(4)
 } 

SigParameter ::= SEQUENCE 
 { 
   sigParameterName     Name, 
   value                Value, 
   -- For use of extraInfo see the comment related to PropertyParm 
   extraInfo CHOICE 
    { 
      relation Relation, 
      range    BOOLEAN, 
      sublist  BOOLEAN 
    } OPTIONAL, 
   ... 
 } 

-- For an AuditCapReply with all events, the RequestID SHALL be ALL. 
-- ALL is represented by 0xffffffff. 
RequestID ::= INTEGER(0..4294967295)   -- 32-bit unsigned integer 

ModemDescriptor ::= SEQUENCE 
 { 
   mtl               SEQUENCE OF ModemType,  
   mpl               SEQUENCE OF PropertyParm, 
   nonStandardData   NonStandardData OPTIONAL 
 } 

ModemType ::= ENUMERATED 
 { 
   v18(0), 
   v22(1), 
   v22bis(2), 
   v32(3), 
   v32bis(4), 
   v34(5), 
   v90(6), 
   v91(7), 
   synchISDN(8), 
   ... 
 } 

DigitMapDescriptor ::= SEQUENCE 
 { 
   digitMapName   DigitMapName OPTIONAL, 
   digitMapValue  DigitMapValue OPTIONAL 
 } 

DigitMapName ::= Name 

DigitMapValue ::= SEQUENCE 
 { 
   startTimer        INTEGER(0..99) OPTIONAL, 
   shortTimer        INTEGER(0..99) OPTIONAL, 
   longTimer         INTEGER(0..99) OPTIONAL, 
   digitMapBody      IA5String, 
   -- Units are seconds for start, short and long timers, and 
   -- hundreds of milliseconds for duration timer. Thus start, 
   -- short, and long range from 1 to 99 seconds and duration 
   -- from 100 ms to 9.9 s 
   -- See A.3 for explanation of digit map syntax 
   ..., 
   durationTimer     INTEGER (0..99) OPTIONAL 
 } 

ServiceChangeParm ::= SEQUENCE 
 { 
   serviceChangeMethod          ServiceChangeMethod, 
   serviceChangeAddress         ServiceChangeAddress OPTIONAL, 
   serviceChangeVersion         INTEGER(0..99) OPTIONAL, 
   serviceChangeProfile         ServiceChangeProfile OPTIONAL, 
   serviceChangeReason          Value, 
   -- A serviceChangeReason consists of a numeric reason code 
   -- and an optional text description. 
   -- The serviceChangeReason SHALL be a string consisting of  
   -- a decimal reason code, optionally followed by a single  
   -- space character and a textual description string. 
   -- This string is first BER-encoded as an IA5String. 
   -- The result of this BER-encoding is then encoded as 
   -- an ASN.1 OCTET STRING type, "double wrapping" the  
   -- value 
   -- as was done for package elements. 
   serviceChangeDelay           INTEGER(0..4294967295) OPTIONAL, 
   -- 32-bit unsigned integer 
   serviceChangeMgcId           MId OPTIONAL, 
   timeStamp                    TimeNotation OPTIONAL, 
   nonStandardData              NonStandardData OPTIONAL, 
   ..., 
   serviceChangeInfo            AuditDescriptor OPTIONAL,
   serviceChangeIncompleteFlag  NULL OPTIONAL 
 } 

ServiceChangeAddress ::= CHOICE 
 { 
   portNumber        INTEGER(0..65535),    -- TCP/UDP port number 
   ip4Address        IP4Address, 
   ip6Address        IP6Address, 
   domainName        DomainName, 
   deviceName        PathName, 
   mtpAddress        OCTET STRING(SIZE(2..4)), 
   ... 
 } 

ServiceChangeResParm ::= SEQUENCE 
 { 
   serviceChangeMgcId      MId OPTIONAL, 
   serviceChangeAddress    ServiceChangeAddress OPTIONAL, 
   serviceChangeVersion    INTEGER(0..99) OPTIONAL, 
   serviceChangeProfile    ServiceChangeProfile OPTIONAL, 
   timestamp               TimeNotation OPTIONAL, 
   ... 
 } 

ServiceChangeMethod ::= ENUMERATED 
 { 
   failover(0), 
   forced(1), 
   graceful(2), 
   restart(3), 
   disconnected(4), 
   handOff(5), 
   ... 
 } 
       
ServiceChangeProfile ::= SEQUENCE 
 { 
   profileName    IA5String(SIZE (1..67)) 
   
   -- 64 characters for name, 1 for "/", 2 for version to match ABNF 
 } 

PackagesDescriptor ::= SEQUENCE OF PackagesItem
 
PackagesItem ::= SEQUENCE 
 { 
   packageName       Name, 
   packageVersion    INTEGER(0..99), 
   ... 
 } 

StatisticsDescriptor ::= SEQUENCE OF StatisticsParameter 

StatisticsParameter ::= SEQUENCE 
 { 
   statName       PkgdName, 
   statValue      Value OPTIONAL 
 } 

-- If statistic consists of a sub-list there will be more than one
-- octetstring in statValue.

NonStandardData ::= SEQUENCE 
 { 
   nonStandardIdentifier   NonStandardIdentifier, 
   data                    OCTET STRING 
 } 

NonStandardIdentifier ::= CHOICE 
 { 
   object            OBJECT IDENTIFIER, 
   h221NonStandard   H221NonStandard, 
   experimental      IA5String(SIZE(8)),  
   -- first two characters SHOULD be "X-" or "X+" 
   ... 
 } 

H221NonStandard ::= SEQUENCE 
 {  t35CountryCode1      INTEGER(0..255), 
    t35CountryCode2      INTEGER(0..255),      -- country, as per T.35 
    t35Extension         INTEGER(0..255),      -- assigned nationally 
    manufacturerCode     INTEGER(0..65535), -- assigned nationally 
    ... 
 } 

TimeNotation ::= SEQUENCE 
 { 
   date     IA5String(SIZE(8)),  -- yyyymmdd format 
   time     IA5String(SIZE(8))   -- hhmmssss format 
   -- per ISO 8601:1988 
 } 

Value ::= SEQUENCE OF OCTET STRING 

END 
