12. PACKAGE DEFINITION
The primary mechanism for extension is by means of Packages. Packages define additional Properties, Events, Signals and Statistics that may occur on Terminations. Packages defined by IETF will appear in separate RFCs. Packages defined by ITU-T may appear in the relevant recommendations (e.g. as annexes). 1. A public document or a standard forum document, which can be referenced as the document that describes the package following the guideline above, should be specified. 2. The document shall specify the version of the Package that it describes. 3. The document should be available on a public web server and should have a stable URL. The site should provide a mechanism to provide comments and appropriate responses should be returned.12.1 Guidelines for defining packages
Packages define Properties, Events, Signals, and Statistics. Packages may also define new error codes according to the guidelines given in section 13.2. This is a matter of documentary convenience: the package documentation is submitted to IANA in support of the error code registration. If a package is modified, it is unnecessary to provide IANA with a new document reference in support of the error code unless the description of the error code itself is modified. Names of all such defined constructs shall consist of the PackageID (which uniquely identifies the package) and the ID of the item (which uniquely identifies the item in that package). In the text encoding the two shall be separated by a forward slash ("/") character. Example: togen/playtone is the text encoding to refer to the play tone signal in the tone generation package. A Package will contain the following sections:
12.1.1 Package
Overall description of the package, specifying: * Package Name: only descriptive, * PackageID: Is an identifier * Description: * Version: A new version of a package can only add additional Properties, Events, Signals, Statistics and new possible values for an existing parameter described in the original package. No deletions or modifications shall be allowed. A version is an integer in the range from 1 to 99. * Extends (Optional): A package may extend an existing package. The version of the original package must be specified. When a package extends another package it shall only add additional Properties, Events, Signals, Statistics and new possible values for an existing parameter described in the original package. An extended package shall not redefine or overload a name defined in the original package. Hence, if package B version 1 extends package A version 1, version 2 of B will not be able to extend the A version 2 if A version 2 defines a name already in B version 1.12.1.2 Properties
Properties defined by the package, specifying: * Property Name: only descriptive. * PropertyID: Is an identifier * Description: * Type: One of: String: UTF-8 string Integer: 4 byte signed integer Double: 8 byte signed integer Character: Unicode UTF-8 encoding of a single letter. Could be more than one octet. Enumeration: One of a list of possible unique values (See 12.3) Sub-list: A list of several values from a list Boolean * Possible Values: * Defined in: Which Megaco descriptor the property is defined in. LocalControl is for stream dependent properties. TerminationState is for stream independent properties. These are expected to be the most common cases, but it is possible for properties to be defined in other descriptors.
* Characteristics: Read / Write or both, and (optionally), global: Indicates whether a property is read-only, or read-write, and if it is global. If Global is omitted, the property is not global. If a property is declared as global, the value of the property is shared by all terminations realizing the package.12.1.3 Events
Events defined by the package, specifying: * Event name: only descriptive. * EventID: Is an identifier * Description: * EventsDescriptor Parameters: Parameters used by the MGC to configure the event, and found in the EventsDescriptor. See section 12.2. * ObservedEventsDescriptor Parameters: Parameters returned to the MGC in Notify requests and in replies to command requests from the MGC that audit ObservedEventsDescriptor, and found in the ObservedEventsDescriptor. See section 12.2.12.1.4 Signals
* Signals defined by the package, specifying: * Signal Name: only descriptive. * SignalID: Is an identifier. SignalID is used in a SignalsDescriptor * Description * SignalType: One of: - OO (On/Off) - TO (TimeOut) - BR (Brief) Note - SignalType may be defined such that it is dependent on the value of one or more parameters. Signals that would be played with SignalType BR or TO should have a default duration. The package has to define the default duration and signalType. * Duration: in hundredths of seconds * Additional Parameters: See section 12.212.1.5 Statistics
Statistics defined by the package, specifying: * Statistic name: only descriptive.
* StatisticID: Is an identifier. StatisticID is used in a StatisticsDescriptor. * Description * Units: unit of measure, e.g. milliseconds, packets.12.1.6 Procedures
Additional guidance on the use of the package.12.2 Guidelines to defining Properties, Statistics and Parameters to Events and Signals.
* Parameter Name: only descriptive * ParameterID: Is an identifier * Type: One of: String: UTF-8 octet string Integer: 4 octet signed integer Double: 8 octet signed integer Character: Unicode UTF-8 encoding of a single letter. Could be more than one octet. Enumeration: One of a list of possible unique values (See 12.3) Sub-list: A list of several values from a list (not supported for statistics) Boolean * Possible values: * Description:12.3 Lists
Possible values for parameters include enumerations. Enumerations may be defined in a list. It is recommended that the list be IANA registered so that packages that extend the list can be defined without concern for conflicting names.12.4 Identifiers
Identifiers in text encoding shall be strings of up to 64 characters, containing no spaces, starting with an alphanumeric character and consisting of alphanumeric characters and / or digits, and possibly including the special character underscore ("_"). Identifiers in binary encoding are 2 octets long. Both text and binary values shall be specified for each identifier, including identifiers used as values in enumerated types.
12.5 Package Registration
A package can be registered with IANA for interoperability reasons. See section 13 for IANA considerations.13. IANA CONSIDERATIONS
13.1 Packages
The following considerations SHALL be met to register a package with IANA: 1. A unique string name, unique serial number and version number is registered for each package. The string name is used with text encoding. The serial number shall be used with binary encoding. Serial Numbers 60000-64565 are reserved for private use. Serial number 0 is reserved. 2. A contact name, email and postal addresses for that contact shall be specified. The contact information shall be updated by the defining organization as necessary. 3. A reference to a document that describes the package, which should be public: The document shall specify the version of the Package that it describes. If the document is public, it should be located on a public web server and should have a stable URL. The site should provide a mechanism to provide comments and appropriate responses should be returned. 4. Packages registered by other than recognized standards bodies shall have a minimum package name length of 8 characters. 5. All other package names are first come-first served if all other conditions are met13.2 Error Codes
The following considerations SHALL be met to register an error code with IANA: 1. An error number and a one line (80 character maximum) string is registered for each error.
2. A complete description of the conditions under which the error is detected shall be included in a publicly available document. The description shall be sufficiently clear to differentiate the error from all other existing error codes. 3. The document should be available on a public web server and should have a stable URL. 4. Error numbers registered by recognized standards bodies shall have 3 or 4 character error numbers. 5. Error numbers registered by all other organizations or individuals shall have 4 character error numbers. 6. An error number shall not be redefined, nor modified except by the organization or individual that originally defined it, or their successors or assigns.13.3 ServiceChange Reasons
The following considerations SHALL be met to register service change reason with IANA: 1. A one phrase, 80-character maximum, unique reason code is registered for each reason. 2. A complete description of the conditions under which the reason is used is detected shall be included in a publicly available document. The description shall be sufficiently clear to differentiate the reason from all other existing reasons. 3. The document should be available on a public web server and should have a stable URL.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 wildcars
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.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 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)), -- 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 } { 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 { 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: 429467294 (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 ::= SEQUENCE { terminationID TerminationID, auditResult AuditResult, ... } AuditResult ::= CHOICE { contextAuditResult 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, ... } NotifyRequest ::= SEQUENCE { terminationID TerminationIDList, observedEventsDescriptor ObservedEventsDescriptor, errorDescriptor ErrorDescriptor OPTIONAL, ... } NotifyReply ::= SEQUENCE { terminationID TerminationIDList OPTIONAL, 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 } 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 },
... } StreamDescriptor ::= SEQUENCE { streamID StreamID, streamParms StreamParms } StreamParms ::= SEQUENCE { localControlDescriptor LocalControlDescriptor OPTIONAL, localDescriptor LocalRemoteDescriptor OPTIONAL, remoteDescriptor LocalRemoteDescriptor OPTIONAL, ... } LocalControlDescriptor ::= SEQUENCE { streamMode StreamMode OPTIONAL, reserveValue BOOLEAN, reserveGroup BOOLEAN, 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, eventList SEQUENCE OF RequestedEvent, ...
} RequestedEvent ::= SEQUENCE { pkgdName PkgdName, streamID StreamID OPTIONAL, eventAction RequestedActions OPTIONAL, evParList SEQUENCE OF EventParameter, ... } RequestedActions ::= SEQUENCE { keepActive BOOLEAN, eventDM EventDM OPTIONAL, secondEvent SecondEventsDescriptor OPTIONAL, signalsDescriptor SignalsDescriptor OPTIONAL, ... } EventDM ::= CHOICE { digitMapName DigitMapName, digitMapValue DigitMapValue } SecondEventsDescriptor ::= SEQUENCE { requestID RequestID, eventList SEQUENCE OF SecondRequestedEvent, ... } SecondRequestedEvent ::= SEQUENCE { pkgdName PkgdName, streamID StreamID OPTIONAL, eventAction SecondRequestedActions OPTIONAL, evParList SEQUENCE OF EventParameter, ... } SecondRequestedActions ::= SEQUENCE { keepActive BOOLEAN, 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 } 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, -- 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)), ... } ServiceChangeResParm ::= SEQUENCE { serviceChangeMgcId MId OPTIONAL, serviceChangeAddress ServiceChangeAddress OPTIONAL, serviceChangeVersion INTEGER(0..99) OPTIONAL, serviceChangeProfile ServiceChangeProfile OPTIONAL, ... } ServiceChangeMethod ::= ENUMERATED { failover(0), forced(1), graceful(2), restart(3), disconnected(4), handOff(5),
... } 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 } 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 ::= OCTET STRING ENDA.3 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 / "+" / "-" / "&" / "!" / "_" / "/" / "'" / "?" / "@" / "^" / "`" / "~" / "*" / "$" / "\" / "(" / ")" / "%" / "." RestChar = ";" / "[" / "]" / "{" / "}" / ":" / "," / "#" / "<" / ">" / "=" / %x22
DIGIT = %x30-39 ; digits 0 through 9 ALPHA = %x41-5A / %x61-7A ; A-Z, a-z A path name is also a string with syntactic restrictions imposed upon it. The ABNF production defining it is copied from Annex B. PathName = NAME *(["/"] ["*"] ["@"] (ALPHA / DIGIT)) ["*"] NAME = ALPHA *63(ALPHA / DIGIT / "_" )ANNEX B TEXT ENCODING OF THE PROTOCOL (NORMATIVE)
B.1 Coding of wildcards
In a text encoding of the protocol, while TerminationIDs are arbitrary, by judicious choice of names, the wildcard character, "*" may be made more useful. When the wildcard character is encountered, it will "match" all TerminationIDs having the same previous and following characters (if appropriate). For example, if there were TerminationIDs of R13/3/1, R13/3/2 and R13/3/3, the TerminationID R13/3/* would match all of them. There are some circumstances where ALL Terminations must be referred to. The TerminationID "*" suffices, and is referred to as ALL. The CHOOSE TerminationID "$" may be used to signal to the MG that it has to create an ephemeral Termination or select an idle physical Termination.B.2 ABNF specification
The protocol syntax is presented in ABNF according to RFC2234. ; Boolean values, indicated in the text as True and False, are ; encoded as "On" and "Off", respectively, in the ABNF. megacoMessage = LWSP [authenticationHeader SEP ] message authenticationHeader = AuthToken EQUAL SecurityParmIndex COLON SequenceNum COLON AuthData SecurityParmIndex = "0x" 8(HEXDIG) SequenceNum = "0x" 8(HEXDIG) AuthData = "0x" 24*64(HEXDIG) message = MegacopToken SLASH Version SEP mId SEP messageBody ; The version of the protocol defined here is equal to 1. messageBody = ( errorDescriptor / transactionList ) transactionList = 1*( transactionRequest / transactionReply / transactionPending / transactionResponseAck ) ;Use of response acks is dependent on underlying transport
transactionPending = PendingToken EQUAL TransactionID LBRKT RBRKT transactionResponseAck = ResponseAckToken LBRKT transactionAck *(COMMA transactionAck) RBRKT transactionAck = transactionID / (transactionID "-" transactionID) transactionRequest = TransToken EQUAL TransactionID LBRKT actionRequest *(COMMA actionRequest) RBRKT actionRequest = CtxToken EQUAL ContextID LBRKT (( contextRequest [COMMA commandRequestList]) / commandRequestList) RBRKT contextRequest = ((contextProperties [COMMA contextAudit]) / contextAudit) contextProperties = contextProperty *(COMMA contextProperty) ; at-most-once contextProperty = (topologyDescriptor / priority / EmergencyToken) contextAudit = ContextAuditToken LBRKT contextAuditProperties *(COMMA contextAuditProperties) RBRKT ; at-most-once contextAuditProperties = ( TopologyToken / EmergencyToken / PriorityToken ) commandRequestList= ["O-"] commandRequest *(COMMA ["O-"] commandRequest) commandRequest = ( ammRequest / subtractRequest / auditRequest / notifyRequest / serviceChangeRequest) transactionReply = ReplyToken EQUAL TransactionID LBRKT [ ImmAckRequiredToken COMMA] ( errorDescriptor / actionReplyList ) RBRKT actionReplyList = actionReply *(COMMA actionReply ) actionReply = CtxToken EQUAL ContextID LBRKT ( errorDescriptor / commandReply ) RBRKT commandReply = (( contextProperties [COMMA commandReplyList] ) / commandReplyList )
commandReplyList = commandReplys *(COMMA commandReplys ) commandReplys = (serviceChangeReply / auditReply / ammsReply / notifyReply ) ;Add Move and Modify have the same request parameters ammRequest = (AddToken / MoveToken / ModifyToken ) EQUAL TerminationID [LBRKT ammParameter *(COMMA ammParameter) RBRKT] ;at-most-once ammParameter = (mediaDescriptor / modemDescriptor / muxDescriptor / eventsDescriptor / signalsDescriptor / digitMapDescriptor / eventBufferDescriptor / auditDescriptor) ammsReply = (AddToken / MoveToken / ModifyToken / SubtractToken ) EQUAL TerminationID [ LBRKT terminationAudit RBRKT ] subtractRequest = ["W-"] SubtractToken EQUAL TerminationID [ LBRKT auditDescriptor RBRKT] auditRequest = ["W-"] (AuditValueToken / AuditCapToken ) EQUAL TerminationID LBRKT auditDescriptor RBRKT auditReply = (AuditValueToken / AuditCapToken ) ( contextTerminationAudit / auditOther) auditOther = EQUAL TerminationID LBRKT terminationAudit RBRKT terminationAudit = auditReturnParameter *(COMMA auditReturnParameter) contextTerminationAudit = EQUAL CtxToken ( terminationIDList / LBRKT errorDescriptor RBRKT ) auditReturnParameter = (mediaDescriptor / modemDescriptor / muxDescriptor / eventsDescriptor / signalsDescriptor / digitMapDescriptor / observedEventsDescriptor / eventBufferDescriptor / statisticsDescriptor / packagesDescriptor / errorDescriptor / auditItem ) auditDescriptor = AuditToken LBRKT [ auditItem *(COMMA auditItem) ] RBRKT
notifyRequest = NotifyToken EQUAL TerminationID LBRKT ( observedEventsDescriptor [ COMMA errorDescriptor ] ) RBRKT notifyReply = NotifyToken EQUAL TerminationID [ LBRKT errorDescriptor RBRKT ] serviceChangeRequest = ServiceChangeToken EQUAL TerminationID LBRKT serviceChangeDescriptor RBRKT serviceChangeReply = ServiceChangeToken EQUAL TerminationID [LBRKT (errorDescriptor / serviceChangeReplyDescriptor) RBRKT] errorDescriptor = ErrorToken EQUAL ErrorCode LBRKT [quotedString] RBRKT ErrorCode = 1*4(DIGIT) ; could be extended TransactionID = UINT32 mId = (( domainAddress / domainName ) [":" portNumber]) / mtpAddress / deviceName ; ABNF allows two or more consecutive "." although it is meaningless ; in a domain name. domainName = "<" (ALPHA / DIGIT) *63(ALPHA / DIGIT / "-" / ".") ">" deviceName = pathNAME ;The values 0x0, 0xFFFFFFFE and 0xFFFFFFFF are reserved. ContextID = (UINT32 / "*" / "-" / "$") domainAddress = "[" (IPv4address / IPv6address) "]" ;RFC2373 contains the definition of IP6Addresses. IPv6address = hexpart [ ":" IPv4address ] IPv4address = V4hex DOT V4hex DOT V4hex DOT V4hex V4hex = 1*3(DIGIT) ; "0".."225" ; this production, while occurring in RFC2373, is not referenced ; IPv6prefix = hexpart SLASH 1*2DIGIT hexpart = hexseq "::" [ hexseq ] / "::" [ hexseq ] / hexseq hexseq = hex4 *( ":" hex4) hex4 = 1*4HEXDIG portNumber = UINT16 ; An mtp address is two octets long
mtpAddress = MTPToken LBRKT octetString RBRKT terminationIDList = LBRKT TerminationID *(COMMA TerminationID) RBRKT ; Total length of pathNAME must not exceed 64 chars. pathNAME = ["*"] NAME *("/" / "*"/ ALPHA / DIGIT /"_" / "$" ) ["@" pathDomainName ] ; ABNF allows two or more consecutive "." although it is meaningless ; in a path domain name. pathDomainName = (ALPHA / DIGIT / "*" ) *63(ALPHA / DIGIT / "-" / "*" / ".") TerminationID = "ROOT" / pathNAME / "$" / "*" mediaDescriptor = MediaToken LBRKT mediaParm *(COMMA mediaParm) RBRKT ; at-most-once per item ; and either streamParm or streamDescriptor but not both mediaParm = (streamParm / streamDescriptor / terminationStateDescriptor) ; at-most-once streamParm = ( localDescriptor / remoteDescriptor / localControlDescriptor ) streamDescriptor = StreamToken EQUAL StreamID LBRKT streamParm *(COMMA streamParm) RBRKT localControlDescriptor = LocalControlToken LBRKT localParm *(COMMA localParm) RBRKT ; at-most-once per item localParm = ( streamMode / propertyParm / reservedValueMode / reservedGroupMode ) reservedValueMode = ReservedValueToken EQUAL ( "ON" / "OFF" ) reservedGroupMode = ReservedGroupToken EQUAL ( "ON" / "OFF" ) streamMode = ModeToken EQUAL streamModes streamModes = (SendonlyToken / RecvonlyToken / SendrecvToken / InactiveToken / LoopbackToken )
propertyParm = pkgdName parmValue parmValue = (EQUAL alternativeValue/ INEQUAL VALUE) alternativeValue = ( VALUE / LSBRKT VALUE *(COMMA VALUE) RSBRKT ; sublist (i.e. A AND B AND ...) / LBRKT VALUE *(COMMA VALUE) RBRKT ; alternatives (i.e. A OR B OR ...) / LSBRKT VALUE COLON VALUE RSBRKT ) ; range INEQUAL = LWSP (">" / "<" / "#" ) LWSP LSBRKT = LWSP "[" LWSP RSBRKT = LWSP "]" LWSP localDescriptor = LocalToken LBRKT octetString RBRKT remoteDescriptor = RemoteToken LBRKT octetString RBRKT eventBufferDescriptor= EventBufferToken LBRKT eventSpec *( COMMA eventSpec ) RBRKT eventSpec = pkgdName [ LBRKT eventSpecParameter *(COMMA eventSpecParameter) RBRKT ] eventSpecParameter = (eventStream / eventOther) eventBufferControl = BufferToken EQUAL ( "OFF" / LockStepToken ) terminationStateDescriptor = TerminationStateToken LBRKT terminationStateParm *( COMMA terminationStateParm ) RBRKT ; at-most-once per item terminationStateParm =(propertyParm / serviceStates / eventBufferControl ) serviceStates = ServiceStatesToken EQUAL ( TestToken / OutOfSvcToken / InSvcToken ) muxDescriptor = MuxToken EQUAL MuxType terminationIDList MuxType = ( H221Token / H223Token / H226Token / V76Token / extensionParameter ) StreamID = UINT16 pkgdName = (PackageName SLASH ItemID) ;specific item / (PackageName SLASH "*") ;all events in package / ("*" SLASH "*") ; all events supported by the MG PackageName = NAME ItemID = NAME
eventsDescriptor = EventsToken EQUAL RequestID LBRKT requestedEvent *( COMMA requestedEvent ) RBRKT requestedEvent = pkgdName [ LBRKT eventParameter *( COMMA eventParameter ) RBRKT ] ; at-most-once each of KeepActiveToken , eventDM and eventStream ;at most one of either embedWithSig or embedNoSig but not both ;KeepActiveToken and embedWithSig must not both be present eventParameter = ( embedWithSig / embedNoSig / KeepActiveToken /eventDM / eventStream / eventOther ) embedWithSig = EmbedToken LBRKT signalsDescriptor [COMMA embedFirst ] RBRKT embedNoSig = EmbedToken LBRKT embedFirst RBRKT ; at-most-once of each embedFirst = EventsToken EQUAL RequestID LBRKT secondRequestedEvent *(COMMA secondRequestedEvent) RBRKT secondRequestedEvent = pkgdName [ LBRKT secondEventParameter *( COMMA secondEventParameter ) RBRKT ] ; at-most-once each of embedSig , KeepActiveToken, eventDM or ; eventStream ; KeepActiveToken and embedSig must not both be present secondEventParameter = ( EmbedSig / KeepActiveToken / eventDM / eventStream / eventOther ) embedSig = EmbedToken LBRKT signalsDescriptor RBRKT eventStream = StreamToken EQUAL StreamID eventOther = eventParameterName parmValue eventParameterName = NAME eventDM = DigitMapToken ((EQUAL digitMapName ) / (LBRKT digitMapValue RBRKT )) signalsDescriptor = SignalsToken LBRKT [ signalParm *(COMMA signalParm)] RBRKT signalParm = signalList / signalRequest signalRequest = signalName [ LBRKT sigParameter *(COMMA sigParameter) RBRKT ]
signalList = SignalListToken EQUAL signalListId LBRKT signalListParm *(COMMA signalListParm) RBRKT signalListId = UINT16 ;exactly once signalType, at most once duration and every signal ;parameter signalListParm = signalRequest signalName = pkgdName ;at-most-once sigStream, at-most-once sigSignalType, ;at-most-once sigDuration, every signalParameterName at most once sigParameter = sigStream / sigSignalType / sigDuration / sigOther / notifyCompletion / KeepActiveToken sigStream = StreamToken EQUAL StreamID sigOther = sigParameterName parmValue sigParameterName = NAME sigSignalType = SignalTypeToken EQUAL signalType signalType = (OnOffToken / TimeOutToken / BriefToken) sigDuration = DurationToken EQUAL UINT16 notifyCompletion = NotifyCompletionToken EQUAL (LBRKT notificationReason *(COMMA notificationReason) RBRKT notificationReason = ( TimeOutToken / InterruptByEventToken / InterruptByNewSignalsDescrToken / OtherReasonToken ) observedEventsDescriptor = ObservedEventsToken EQUAL RequestID LBRKT observedEvent *(COMMA observedEvent) RBRKT ;time per event, because it might be buffered observedEvent = [ TimeStamp LWSP COLON] LWSP pkgdName [ LBRKT observedEventParameter *(COMMA observedEventParameter) RBRKT ] ;at-most-once eventStream, every eventParameterName at most once observedEventParameter = eventStream / eventOther RequestID = UINT32 modemDescriptor = ModemToken (( EQUAL modemType) / (LSBRKT modemType *(COMMA modemType) RSBRKT)) [ LBRKT NAME parmValue *(COMMA NAME parmValue) RBRKT ]
; at-most-once modemType = (V32bisToken / V22bisToken / V18Token / V22Token / V32Token / V34Token / V90Token / V91Token / SynchISDNToken / extensionParameter) digitMapDescriptor = DigitMapToken EQUAL ( ( LBRKT digitMapValue RBRKT ) / (digitMapName [ LBRKT digitMapValue RBRKT ]) ) digitMapName = NAME digitMapValue = ["T" COLON Timer COMMA] ["S" COLON Timer COMMA] ["L" COLON Timer COMMA] digitMap Timer = 1*2DIGIT 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 ;Basic event symbols / %x41-4B / %x61-6B ; a-k, A-K / "L" / "S" ;Inter-event timers (long, short) / "Z" ;Long duration modifier ;at-most-once, and DigitMapToken and PackagesToken are not allowed ;in AuditCapabilities command auditItem = ( MuxToken / ModemToken / MediaToken / SignalsToken / EventBufferToken / DigitMapToken / StatsToken / EventsToken / ObservedEventsToken / PackagesToken ) serviceChangeDescriptor = ServicesToken LBRKT serviceChangeParm *(COMMA serviceChangeParm) RBRKT serviceChangeParm = (serviceChangeMethod / serviceChangeReason / serviceChangeDelay / serviceChangeAddress / serviceChangeProfile / extension / TimeStamp / serviceChangeMgcId / serviceChangeVersion ) serviceChangeReplyDescriptor = ServicesToken LBRKT servChgReplyParm *(COMMA servChgReplyParm) RBRKT ;at-most-once. Version is REQUIRED on first ServiceChange response servChgReplyParm = (serviceChangeAddress / serviceChangeMgcId / serviceChangeProfile / serviceChangeVersion ) serviceChangeMethod = MethodToken EQUAL (FailoverToken /
ForcedToken / GracefulToken / RestartToken / DisconnectedToken / HandOffToken / extensionParameter) serviceChangeReason = ReasonToken EQUAL VALUE serviceChangeDelay = DelayToken EQUAL UINT32 serviceChangeAddress = ServiceChangeAddressToken EQUAL VALUE serviceChangeMgcId = MgcIdToken EQUAL mId serviceChangeProfile = ProfileToken EQUAL NAME SLASH Version serviceChangeVersion = VersionToken EQUAL Version extension = extensionParameter parmValue packagesDescriptor = PackagesToken LBRKT packagesItem *(COMMA packagesItem) RBRKT Version = 1*2(DIGIT) packagesItem = NAME "-" UINT16 TimeStamp = Date "T" Time ; per ISO 8601:1988 ; Date = yyyymmdd Date = 8(DIGIT) ; Time = hhmmssss Time = 8(DIGIT) statisticsDescriptor = StatsToken LBRKT statisticsParameter *(COMMA statisticsParameter ) RBRKT ;at-most-once per item statisticsParameter = pkgdName EQUAL VALUE topologyDescriptor = TopologyToken LBRKT terminationA COMMA terminationB COMMA topologyDirection RBRKT terminationA = TerminationID terminationB = TerminationID topologyDirection = BothwayToken / IsolateToken / OnewayToken priority = PriorityToken EQUAL UINT16 extensionParameter = "X" ("-" / "+") 1*6(ALPHA / DIGIT) ; octetString is used to describe SDP defined in RFC2327. ; Caution should be taken if CRLF in RFC2327 is used. ; To be safe, use EOL in this ABNF. ; Whenever "}" appears in SDP, it is escaped by "\", e.g., "\}" octetString = *(nonEscapeChar) nonEscapeChar = ( "\}" / %x01-7C / %x7E-FF ) quotedString = DQUOTE 1*(SafeChar / RestChar/ WSP) DQUOTE UINT16 = 1*5(DIGIT) ; %x0-FFFF
UINT32 = 1*10(DIGIT) ; %x0-FFFFFFFF NAME = ALPHA *63(ALPHA / DIGIT / "_" ) VALUE = quotedString / 1*(SafeChar) SafeChar = DIGIT / ALPHA / "+" / "-" / "&" / "!" / "_" / "/" / "'" / "?" / "@" / "^" / "`" / "~" / "*" / "$" / "\" / "(" / ")" / "%" / "|" / "." EQUAL = LWSP %x3D LWSP ; "=" COLON = %x3A ; ":" LBRKT = LWSP %x7B LWSP ; "{" RBRKT = LWSP %x7D LWSP ; "}" COMMA = LWSP %x2C LWSP ; "," DOT = %x2E ; "." SLASH = %x2F ; "/" ALPHA = %x41-5A / %x61-7A ; A-Z / a-z DIGIT = %x30-39 ; 0-9 DQUOTE = %x22 ; " (Double Quote) HEXDIG = ( DIGIT / "A" / "B" / "C" / "D" / "E" / "F" ) SP = %x20 ; space HTAB = %x09 ; horizontal tab CR = %x0D ; Carriage return LF = %x0A ; linefeed LWSP = *( WSP / COMMENT / EOL ) EOL = (CR [LF] / LF ) WSP = SP / HTAB ; white space SEP = ( WSP / EOL / COMMENT) LWSP COMMENT = ";" *(SafeChar/ RestChar / WSP / %x22) EOL RestChar = ";" / "[" / "]" / "{" / "}" / ":" / "," / "#" / "<" / ">" / "=" AddToken = ("Add" / "A") AuditToken = ("Audit" / "AT") AuditCapToken = ("AuditCapability" / "AC") AuditValueToken = ("AuditValue" / "AV") AuthToken = ("Authentication" / "AU") BothwayToken = ("Bothway" / "BW") BriefToken = ("Brief" / "BR") BufferToken = ("Buffer" / "BF") CtxToken = ("Context" / "C") ContextAuditToken = ("ContextAudit" / "CA") DigitMapToken = ("DigitMap" / "DM") DisconnectedToken = ("Disconnected" / "DC") DelayToken = ("Delay" / "DL") DurationToken = ("Duration" / "DR")
EmbedToken = ("Embed" / "EB") EmergencyToken = ("Emergency" / "EM") ErrorToken = ("Error" / "ER") EventBufferToken = ("EventBuffer" / "EB") EventsToken = ("Events" / "E") FailoverToken = ("Failover" / "FL") ForcedToken = ("Forced" / "FO") GracefulToken = ("Graceful" / "GR") H221Token = ("H221" ) H223Token = ("H223" ) H226Token = ("H226" ) HandOffToken = ("HandOff" / "HO") ImmAckRequiredToken = ("ImmAckRequired" / "IA") InactiveToken = ("Inactive" / "IN") IsolateToken = ("Isolate" / "IS") InSvcToken = ("InService" / "IV") InterruptByEventToken = ("IntByEvent" / "IBE") InterruptByNewSignalsDescrToken = ("IntBySigDescr" / "IBS") KeepActiveToken = ("KeepActive" / "KA") LocalToken = ("Local" / "L") LocalControlToken = ("LocalControl" / "O") LockStepToken = ("LockStep" / "SP") LoopbackToken = ("Loopback" / "LB") MediaToken = ("Media" / "M") MegacopToken = ("MEGACO" / "!") MethodToken = ("Method" / "MT") MgcIdToken = ("MgcIdToTry" / "MG") ModeToken = ("Mode" / "MO") ModifyToken = ("Modify" / "MF") ModemToken = ("Modem" / "MD") MoveToken = ("Move" / "MV") MTPToken = ("MTP") MuxToken = ("Mux" / "MX") NotifyToken = ("Notify" / "N") NotifyCompletionToken = ("NotifyCompletion" / "NC") ObservedEventsToken = ("ObservedEvents" / "OE") OnewayToken = ("Oneway" / "OW") OnOffToken = ("OnOff" / "OO") OtherReasonToken = ("OtherReason" / "OR") OutOfSvcToken = ("OutOfService" / "OS") PackagesToken = ("Packages" / "PG") PendingToken = ("Pending" / "PN") PriorityToken = ("Priority" / "PR") ProfileToken = ("Profile" / "PF") ReasonToken = ("Reason" / "RE") RecvonlyToken = ("ReceiveOnly" / "RC") ReplyToken = ("Reply" / "P")
RestartToken = ("Restart" / "RS") RemoteToken = ("Remote" / "R") ReservedGroupToken = ("ReservedGroup" / "RG") ReservedValueToken = ("ReservedValue" / "RV") SendonlyToken = ("SendOnly" / "SO") SendrecvToken = ("SendReceive" / "SR") ServicesToken = ("Services" / "SV") ServiceStatesToken = ("ServiceStates" / "SI") ServiceChangeToken = ("ServiceChange" / "SC") ServiceChangeAddressToken = ("ServiceChangeAddress" / "AD") SignalListToken = ("SignalList" / "SL") SignalsToken = ("Signals" / "SG") SignalTypeToken = ("SignalType" / "SY") StatsToken = ("Statistics" / "SA") StreamToken = ("Stream" / "ST") SubtractToken = ("Subtract" / "S") SynchISDNToken = ("SynchISDN" / "SN") TerminationStateToken = ("TerminationState" / "TS") TestToken = ("Test" / "TE") TimeOutToken = ("TimeOut" / "TO") TopologyToken = ("Topology" / "TP") TransToken = ("Transaction" / "T") ResponseAckToken = ("TransactionResponseAck"/ "K") V18Token = ("V18") V22Token = ("V22") V22bisToken = ("V22b") V32Token = ("V32") V32bisToken = ("V32b") V34Token = ("V34") V76Token = ("V76") V90Token = ("V90") V91Token = ("V91") VersionToken = ("Version" / "V")