CNP-PROTOCOL {itu-t(0) recommendation(0) t(20) 123 annexb(2) 1} DEFINITIONS
AUTOMATIC TAGS ::=
BEGIN

--
--  Imported Definitions
--
IMPORTS
  NonStandardParameter, TransportAddress, AliasAddress
    FROM H323-MESSAGES
      
  -- H.225.0 Version 2
  -- {itu-t (0) recommendation (0) h (8) 2250 version (0) 2}
  Priority
    FROM MAP-PROTOCOL;

-- T.125 Annex A Version 1
ProtocolIdentifier ::= OBJECT IDENTIFIER

-- shall be set to
-- {itu-t (0) recommendation (0) t (20) 123 annexb (2) 1}
--
--  Service Negotiation Types
--
TPDUSize ::= INTEGER(128..65535)

ReliableTransportProtocolType ::= CHOICE {
  cnp                           NULL,
  x224                          NULL,
  map                           NULL,
  nonStandardTransportProtocol  NonStandardParameter,
  ...
}

ReliableTransportProtocol ::= SEQUENCE {
  type                   ReliableTransportProtocolType,
  maxTPDUSize            TPDUSize,
  nonStandardParameters  SEQUENCE OF NonStandardParameter OPTIONAL,
  ...
}

ReliableSecurityProtocol ::= CHOICE {
  none                         NULL,
  tls                          NULL,
  ssl                          NULL,
  ipsecIKEKeyManagement        NULL,
  ipsecManualKeyManagement     NULL,
  x274WithoutSAID              NULL,
  x274WithSAID                 X274WithSAIDInfo,
  gssApi                       NULL,
  physical                     NULL,
  nonStandardSecurityProtocol  NonStandardParameter,
  ...
}

UnreliableTransportProtocolType ::= CHOICE {
  x234                          NULL,
  nonStandardTransportProtocol  NonStandardParameter,
  ...
}

UnreliableTransportProtocol ::= SEQUENCE {
  type                   UnreliableTransportProtocolType,
  maxTPDUSize            TPDUSize,
  sourceAddress          TransportAddress,
  sourceTSAP             OCTET STRING OPTIONAL,
  nonStandardParameters  SEQUENCE OF NonStandardParameter OPTIONAL,
  ...
}

UnreliableSecurityProtocol ::= CHOICE {
  none                         NULL,
  ipsecIKEKeyManagement        NULL,
  ipsecManualKeyManagement     NULL,
  x274WithoutSAID              NULL,
  x274WithSAID                 X274WithSAIDInfo,
  physical                     NULL,
  nonStandardSecurityProtocol  NonStandardParameter,
  ...
}

X274WithSAIDInfo ::= SEQUENCE {
  localSAID  OCTET STRING,
  peerSAID   OCTET STRING,
  ...
}

--
--  CNP Control PDU Types
--
ConnectRequestPDU ::= SEQUENCE {
  protocolIdentifier            ProtocolIdentifier,
  reconnectRequested            BOOLEAN,
  priority                      Priority OPTIONAL,
  reliableTransportProtocols    SEQUENCE OF ReliableTransportProtocol OPTIONAL,
  reliableSecurityProtocols     SEQUENCE OF ReliableSecurityProtocol OPTIONAL,
  unreliableTransportProtocols
    SEQUENCE OF UnreliableTransportProtocol OPTIONAL,
  unreliableSecurityProtocols   SEQUENCE OF UnreliableSecurityProtocol OPTIONAL,
  destinationAddress            SEQUENCE OF AliasAddress OPTIONAL,
  nonStandardParameters         SEQUENCE OF NonStandardParameter OPTIONAL,
  ...
}

ConnectConfirmPDU ::= SEQUENCE {
  protocolIdentifier           ProtocolIdentifier,
  reliableTransportProtocol    ReliableTransportProtocol OPTIONAL,
  reliableSecurityProtocol     ReliableSecurityProtocol OPTIONAL,
  unreliableTransportProtocol  UnreliableTransportProtocol OPTIONAL,
  unreliableSecurityProtocol   UnreliableSecurityProtocol OPTIONAL,
  nonStandardParameters        SEQUENCE OF NonStandardParameter OPTIONAL,
  ...
}

DisconnectReason ::= CHOICE {
  unacceptableVersion          NULL,
  incompatibleParameters       NULL,
  securityDenied               NULL,
  destinationUnreachable       NULL,
  userRejected                 NULL,
  userInitiated                NULL,
  protocolError                NULL,
  unspecifiedFailure           NULL,
  routeToAlternate             NULL,
  nonStandardDisconnectReason  NonStandardParameter,
  ...
}

DisconnectRequestPDU ::= SEQUENCE {
  disconnectReason             DisconnectReason,
  reliableTransportProtocol    ReliableTransportProtocol OPTIONAL,
  reliableSecurityProtocol     ReliableSecurityProtocol OPTIONAL,
  unreliableTransportProtocol  UnreliableTransportProtocol OPTIONAL,
  unreliableSecurityProtocol   UnreliableSecurityProtocol OPTIONAL,
  destinationAddress           SEQUENCE OF AliasAddress OPTIONAL,
  nonStandardParameters        SEQUENCE OF NonStandardParameter OPTIONAL,
  ...
}

RejectCause ::= CHOICE {
  unrecognizedPDU         NULL,
  invalidParameter        NULL,
  causeUnspecified        NULL,
  nonStandardRejectCause  NonStandardParameter,
  ...
}

ErrorPDU ::= SEQUENCE {
  rejectCause            RejectCause,
  rejectedPDU            OCTET STRING,
  nonStandardParameters  SEQUENCE OF NonStandardParameter OPTIONAL,
  ...
}

NonStandardPDU ::= SEQUENCE {
  nonStandardParameters  SEQUENCE OF NonStandardParameter OPTIONAL,
  ...
}

CNPControlPDU ::= CHOICE {
  connectRequest     ConnectRequestPDU,
  connectConfirm     ConnectConfirmPDU,
  disconnectRequest  DisconnectRequestPDU,
  error              ErrorPDU,
  nonStandardCNPPDU  NonStandardPDU,
  ...
}

END