-- This ASN.1 spec has been extracted from the Megaco/H.248 spec
-- http://www.ietf.org/internet-drafts/draft-ietf-megaco-merged-01.txt
--
-- o Removed stuff named nonStandard
-- o Major enhancements of the indentation has been performed.
--
-- Hakan Mattsson <hakan@cslab.ericsson.se>
--
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-- ANNEX A: BINARY ENCODING OF THE PROTOCOL (NORMATIVE) 
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
--     
-- This Annex specifies the syntax of messages using the notation 
-- defined in ASN.1 [ITU-T Recommendation X.680 (1997): Information 
-- Technology - Abstract Syntax Notation One (ASN.1) - Specification of 
-- basic notation.]. Messages shall be encoded for transmission by 
-- applying the basic encoding rules specified in [ITU-T Recommendation 
-- X.690(1994) Information Technology - ASN.1  Encoding Rules: 
-- Specification of Basic Encoding Rules (BER)].  
--     
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-- A.1 Coding of wildcards 
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
--     
-- The use of wildcards ALL and CHOOSE is allowed in the protocol.  
-- This allows a MGC to partially specify Termination IDs and let the 
-- MG choose from the values that conform to the partial specification.  
-- Termination IDs may encode a hierarchy of names.  This hierarchy is 
-- provisioned. For instance, a TerminationID may consist of a trunk 
-- group, a trunk within the group and a circuit.  Wildcarding must be 
-- possible at all levels.  The following paragraphs explain how this 
-- is achieved. 
--  
-- The ASN.1 description uses octet strings of up to 8 octets in length 
-- for Termination IDs.  This means that Termination IDs consist of at 
-- most 64 bits.  A fully specified Termination ID may be preceded by a 
-- sequence of wildcarding fields.  A wildcarding field is one octet in 
-- length.  Bit 7 (the most significant bit) of this octet specifies 
-- what type of wildcarding is invoked:  if the bit value equals 1, 
-- then the ALL wildcard is used; if the bit value if 0, then the 
-- CHOOSE wildcard is used.  Bit 6 of the wildcarding field specifies 
-- whether the wildcarding pertains to one level in the hierarchical 
-- naming scheme (bit value 0) or to the level of the hierarchy 
-- specified in the wildcarding field plus all lower levels (bit value 
-- 1).  Bits 0 through 5 of the wildcarding field specify the bit 
-- position in the Termination ID at which the starts. 
--  
-- We illustrate this scheme with some examples.  In these examples, 
-- the most significant bit in a string of bits appears on the left 
-- hand side. 
--  
-- Assume that Termination IDs are three octets long and that each 
-- octet represents a level in a hierarchical naming scheme.  A valid 
-- Termination ID is 
--      00000001 00011110 01010101. 
--  
-- Addressing ALL names with prefix 00000001 00011110 is done as 
-- follows: 
--      wildcarding field: 10000111 
--      Termination ID: 00000001 00011110 xxxxxxxx. 
--  
-- The values of the bits labeled "x" is irrelevant and shall be 
-- ignored by the receiver. 
-- 
-- Indicating to the receiver that is must choose a name with 00011110 
-- as the second octet is done as follows: 
--      wildcarding fields: 00010111 followed by 00000111 
--      Termination ID: xxxxxxxx 00011110 xxxxxxxx. 
--  
-- The first wildcard field indicates a CHOOSE wildcard for the level 
-- in the naming hierarchy starting at bit 23, the highest level in our 
-- assumed naming scheme.  The second wildcard field indicates a CHOOSE 
-- wildcard for the level in the naming hierarchy starting at bit 7, 
-- the lowest level in our assumed naming scheme. 
--  
-- Finally, a CHOOSE-wildcarded name with the highest level of the name 
-- equal to 00000001 is specified as follows: 
--      wildcard field: 01001111 
--      Termination ID: 0000001 xxxxxxxx xxxxxxxx . 
--  
-- Bit value 1 at bit position 6 of the first octet of the wildcard 
-- field indicates that the wildcarding pertains to the specified level 
-- in the naming hierarchy and all lower levels. 
--  
-- Context IDs may also be wildcarded.  In the case of Context IDs, 
-- however, specifying partial names is not allowed.  Context ID 0x0  
-- SHALL be used to indicate the NULL Context, Context ID 0xFFFFFFFE 
-- SHALL be used to indicate a CHOOSE wildcard, and Context ID 
-- 0xFFFFFFFF SHALL be used to indicate an ALL wildcard. 
--  
-- TerminationID 0xFFFFFFFFFFFFFFFF SHALL be used to indicate the ROOT 
-- Termination. 
--     
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-- Digit maps and path names 
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
--  
-- From a syntactic viewpoint, digit maps are strings with syntactic 
-- restrictions imposed upon them.  The syntax of valid digit maps is 
-- specified in ABNF [RFC 2234].  The syntax for digit maps presented 
-- in this section is for illustrative purposes only. The definition of 
-- digitMap in Annex B takes precedence in the case of differences 
-- between the two. 
--  
-- digitMap = (digitString / LWSP "(" LWSP digitStringList LWSP ")" 
-- LWSP) 
-- digitStringList = digitString *( LWSP "/" LWSP digitString ) 
-- digitString = 1*(digitStringElement) 
-- digitStringElement = digitPosition [DOT] 
-- digitPosition = digitMapLetter / digitMapRange 
-- digitMapRange = ("x" / LWSP "[" LWSP digitLetter LWSP "]" LWSP) 
-- digitLetter = *((DIGIT "-" DIGIT) /digitMapLetter) 
-- digitMapLetter = DIGIT               ;digits 0-9 
--         / %x41-4B / %x61-6B             ;a-k and A-K 
--         / "L"   / "S"                   ;Inter-event timers 
--                                         ;(long, short) 
--         / "Z"                           ;Long duration event 
-- DOT = %x2E ; "." 
-- LWSP = *(WSP / COMMENT / EOL) 
-- WSP = SP / HTAB 
-- COMMENT = ";" *(SafeChar / RestChar / WSP) EOL 
-- EOL = (CR [LF]) / LF 
-- SP = %x20 
-- HTAB = %x09 
-- CR = %x0D 
-- LF = %x0A 
-- SafeChar = DIGIT / ALPHA / "+" / "-" / "&" / "!" / "_" / "/" / 
--  "'" / "?" / "@" / "^" / "`" / "~" / "*" / "$" / "\" / 
-- "(" / ")" / "%" / "." 
-- RestChar = ";" / "[" / "]" / "{" / "}" / ":" / "," / "#" / 
--                 "<" / ">" / "=" / %x22 
-- DIGIT = %x30-39                      ; digits 0 through 9 
-- ALPHA = %x41-5A / %x61-7A    ; A-Z, a-z 
-- A path name is also a string with syntactic restrictions imposed 
-- upon it.  The ABNF production defining it is copied from Annex B. 
--  
-- PathName = NAME *(["/"] ["*"] ["@"] (ALPHA / DIGIT)) ["*"] 
-- NAME = ALPHA *63(ALPHA / DIGIT / "_" )
--
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-- A.2 ASN.1 syntax specification 
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
--     
-- This section contains the ASN.1 specification of the H.248 protocol 
-- syntax. 
--  
-- NOTE - In case a transport mechanism is used that employs 
-- application level framing, the definition of Transaction below 
-- changes.  Refer to the annex defining the transport mechanism for 
-- the definition that applies in that case. 
--  
-- NOTE - The ASN.1 specification below contains a clause defining 
-- TerminationIDList as a sequence of TerminationIDs.  The length of 
-- this sequence SHALL be one, except possibly when used in 
-- contextAuditResult. 
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
 
MEDIA-GATEWAY-CONTROL-v1
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 1. 
             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: 
        --        15                0 
        --        |  PC        | NI | 
        --           14 bits    2 bits 
      ... 
} 
 
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 section A.3 
 
Transaction ::= CHOICE 
{ 
        transactionRequest      TransactionRequest, 
        transactionPending      TransactionPending, 
        transactionReply        TransactionReply, 
        transactionResponseAck  TransactionResponseAck, 
             -- use of response acks is dependent on underlying transport 
        ... 
} 
 
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 
        }, 
        ... 
} 

TransactionResponseAck ::= SEQUENCE OF TransactionAck

TransactionAck ::= SEQUENCE 
{ 
        firstAck                TransactionId, 
        lastAck                 TransactionId OPTIONAL 
} 
 
ErrorDescriptor ::= SEQUENCE 
{ 
        errorCode               ErrorCode, 
        errorText               ErrorText OPTIONAL 
} 
 
ErrorCode ::= INTEGER(0..65535) 
-- See section 13 for IANA considerations w.r.t. 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, 
        ... 
} 

ContextAttrAuditRequest ::= SEQUENCE 
{ 
        topology                NULL OPTIONAL, 
        emergency               NULL OPTIONAL, 
        priority                NULL OPTIONAL, 
        ... 
} 
 
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) 
        } 
} 
 
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, 
... 
} 
 
AmmsReply ::= SEQUENCE 
{ 
        terminationID           TerminationIDList, 
        terminationAudit        TerminationAudit OPTIONAL, 
        ... 
} 
 
SubtractRequest ::= SEQUENCE 
{ 
        terminationID           TerminationIDList, 
        auditDescriptor         AuditDescriptor OPTIONAL, 
        ... 
} 

AuditRequest ::= SEQUENCE 
{ 
        terminationID           TerminationID, 
        auditDescriptor         AuditDescriptor, 
        ... 
} 
 
AuditReply ::= CHOICE 
{ 
        contextAuditResult      TerminationIDList, 
        error                   ErrorDescriptor,
        auditResult             AuditResult, 
        ... 
} 
 
AuditResult ::= SEQUENCE 
{ 
	terminationID           TerminationID,
        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, 
        ... 
} 
 
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 Section 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, 
        ... 
} 

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 Name (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. 
-- Wildcarding of Package Name is permitted only if Property Name is 
-- 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), 
        ... 
} 
 
StreamID ::= INTEGER(0..65535)  -- 16 bit unsigned integer 
 
EventsDescriptor ::= SEQUENCE 
{ 
        requestID               RequestID,
        -- IG 6.82 was withdrawn
        -- 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, 
        ... 
} 
 
RequestedActions ::= SEQUENCE 
{ 
        keepActive              BOOLEAN OPTIONAL, 
        eventDM                 EventDM OPTIONAL, 
        secondEvent             SecondEventsDescriptor OPTIONAL, 
        signalsDescriptor       SignalsDescriptor OPTIONAL, 
        ... 
} 
 
 
EventDM ::= CHOICE 
{
        digitMapName            DigitMapName, 
        digitMapValue           DigitMapValue 
} 

SecondEventsDescriptor ::= SEQUENCE 
{ 
        requestID               RequestID, 
        -- IG 6.82 was withdrawn
        -- requestID               RequestID OPTIONAL, 
        -- RequestID must be present if eventList is non empty
        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, 
        ... 
} 
 
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, 
        ... 
} 
 
SignalType ::= ENUMERATED 
{ 
        brief(0), 
        onOff(1), 
        timeOut(2), 
        ... 
} 
 
SignalName ::= PkgdName 
 
NotifyCompletion ::= BIT STRING 
{ 
        onTimeOut(0),
        onInterruptByEvent(1), 
        onInterruptByNewSignalDescr(2),
        otherReason(3) 
} 
 
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, 
        ... 
} 
 
RequestID ::= INTEGER(0..4294967295)   -- 32 bit unsigned integer 
-- Request ALL Value:    4294967295 (0xFFFFFFFF) 
 
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, 
        -- See Section A.3 for explanation of digit map syntax 
        ... 
} 
 
ServiceChangeParm ::= SEQUENCE 
{ 
        serviceChangeMethod     ServiceChangeMethod, 
        serviceChangeAddress    ServiceChangeAddress OPTIONAL, 
        serviceChangeVersion    INTEGER(0..99) OPTIONAL, 
        serviceChangeProfile    ServiceChangeProfile OPTIONAL, 
        serviceChangeReason     Value, 
        serviceChangeDelay      INTEGER(0..4294967295) OPTIONAL, 
                                    -- 32 bit unsigned integer 
        serviceChangeMgcId      MId OPTIONAL, 
        timeStamp               TimeNotation OPTIONAL, 
        nonStandardData         NonStandardData 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
} 
 
-- ServiceChangeProfile ::= SEQUENCE 
-- { 
--         profileName             Name, 
--         version                 INTEGER(0..99) 
-- } 
 
PackagesDescriptor ::= SEQUENCE OF PackagesItem 
 
PackagesItem ::= SEQUENCE 
{ 
        packageName             Name, 
        packageVersion          INTEGER(0..99), 
        ... 
} 
 
StatisticsDescriptor ::= SEQUENCE OF StatisticsParameter 
 
StatisticsParameter ::= SEQUENCE 
{ 
        statName                PkgdName, 
        statValue               Value OPTIONAL
} 
 
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 
} 
 
Value ::= SEQUENCE OF OCTET STRING 
 
 
END 
 
