Spec DEFINITIONS ::= BEGIN
    LawfulInterceptionIdentifier ::= OCTET STRING (SIZE (1..25)) 
    
    PS-PDU ::= SEQUENCE { 
        pSHeader    [1] PSHeader,
        payload     [2] Payload
    } 

    PSHeader ::= SEQUENCE { 
        li-psDomainId                   [0] OBJECT IDENTIFIER,
        lawfulInterceptionIdentifier    [1] LawfulInterceptionIdentifier, 
        authorizationCountryCode        [2] PrintableString (SIZE (2)) OPTIONAL,
        communicationIdentifier         [3] CommunicationIdentifier,
        sequenceNumber                  [4] INTEGER (0..4294967295),
        timeStamp                       [5] GeneralizedTime OPTIONAL,
        ...,
        interceptionPointID             [6] PrintableString (SIZE (1..8)) OPTIONAL
    }

    Payload ::= CHOICE { 
        cCPayloadSequence  [1] SEQUENCE OF CCPayload,
       ...
    }

    CommunicationIdentifier ::= SEQUENCE  {
        networkIdentifier [0] NetworkIdentifier,
        communicationIdentityNumber [1] INTEGER (0..4294967295) OPTIONAL,
        deliveryCountryCode [2] PrintableString (SIZE (2)) OPTIONAL,
        ...
    }
    NetworkIdentifier ::= SEQUENCE  {
        operatorIdentifier          [0] OCTET STRING (SIZE(1..16)),
        networkElementIdentifier    [1] OCTET STRING (SIZE(1..16)) OPTIONAL,
        ...,
        eTSI671NEID                 [2] Network-Element-Identifier OPTIONAL
    }

    Network-Element-Identifier ::=  CHOICE {
        iP-Format           [3] OCTET STRING (SIZE (1..25)),
        dNS-Format          [4] OCTET STRING (SIZE (1..25)),
        ...
    }


    CCPayload ::= SEQUENCE { 
        payloadDirection    [0] PayloadDirection OPTIONAL,
        timeStamp           [1] GeneralizedTime OPTIONAL,
        cCContents          [2] CCContents,
        ...
    }

    PayloadDirection ::= ENUMERATED {
        fromTarget(0),
        toTarget(1),
        ...
    }

    CCContents ::= CHOICE { 
        undefinedCC     [0]  OCTET STRING,
        ...
    }
END