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-- ====================================
-- Description of the IP Multimedia PDU
-- ====================================
{itu-t(0) identified-organization(4) etsi(0) securityDomain(2) lawfulIntercept(2) li-ps(5) iPMultimedia(5) version13(13)}
DEFINITIONS IMPLICIT TAGS ::=
BEGIN
IMPORTS
-- from ETSI TS 102 232-1 [2]
Location
FROM LI-PS-PDU
{itu-u(0) identified-organization(4) etsi(0) securityDomain(2) lawfulIntercept(2) li-ps(5) genHeader(1) version30(30)};
-- ============================
-- Object Identifier Definition
-- ============================
iPMMIRIObjId RELATIVE-OID ::= {li-ps(5) iPMultimedia(5) version13(13) iRI(1)}
iPMMCCObjId RELATIVE-OID ::= {li-ps(5) iPMultimedia(5) version13(13) cC(2)}
-- {itu-t(0) identified-organization(4) etsi(0) securityDomain(2) lawfulIntercept(2)}
-- =====================================
-- IP Multimedia Communications Contents
-- =====================================
IPMMCC ::= SEQUENCE
{
iPMMCCObjId [0] RELATIVE-OID,
mMCCContents [1] OCTET STRING,
-- Copy of the multimediastream, i.e. all related RTP/RTCP, UDPTL or MSRP packets
-- Each IPMMCC shall contain one intercepted packet
-- Protocol of the multimedia packets is indicated by means of mMCCprotocol parameter
-- mMCCContents was called rTPCCContents in earlier versions until v2.3.2.
...,
frameType [2] FrameType OPTIONAL,
-- The availability of header information shall be signalled with the frameType parameter
-- The module is defined as OPTIONAL because of backwards compatibility reasons
-- For new implementations the module is MANDATORY to be used as defined in clause 5.5
streamIdentifier [3] OCTET STRING OPTIONAL,
-- Used to identify the media stream within the current CIN, typically in case of
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-- multiple media streams communications
-- May be used to correlate each media stream with the relevant SDP media description of IRI
-- May contain c= and m= lines extracts for instance
mMCCprotocol [4] MMCCprotocol OPTIONAL
-- Used to identify the protocol of packets sent in MMCCContent (RTP, UDPTL, MSRP, etc.)
-- Absence means mMCCContents contains RTP/RTCP packets
}
FrameType ::= ENUMERATED
{
ipFrame(0),
-- All headers are present
udpFrame(1),
-- IP header is missing
rtpFrame(2),
-- UDP and IP headers are missing
audioFrame(3),
-- All headers are missing
...,
tcpFrame(4),
-- IP header is missing
artificialRtpFrame(5),
-- UDP and IP headers are missing; artificial RTP frame has been added
udptlFrame(6),
-- UDP and IP headers are missing
msrpFrame(7)
-- TCP and IP headers are missing
}
MMCCprotocol ::= ENUMERATED
{
rTP(0),
-- mMCCContents parameter contains RTP/RTCP packets
mSRP(1),
-- mMCCContents parameter contains MSRP packets
...,
uDPTL(2)
-- mMCCContents parameter contains UDPTL packets
}
-- ========================================================
-- Intercept-related information for IP Multimedia sessions
-- ========================================================
IPMMIRI ::= SEQUENCE
{
iPMMIRIObjId [0] RELATIVE-OID,
iPMMIRIContents [1] IPIRIContents,
...,
targetLocation [2] LI-PS-PDU.Location OPTIONAL,
-- This common parameter is defined in ETSI TS 102 232-1 [2], the use of this parameter is described in clause 5.2.3
additionalSignalling [3] SEQUENCE OF AdditionalSignalling OPTIONAL
-- The use of this parameter is defined in clause 5.2.5
}
IPIRIContents ::= CHOICE
{
originalIPMMMessage [0] OCTET STRING,
-- Copy of the IP MM signalling packet including the original IP and UDP/TCP headers
sIPMessage [1] SIPMessage,
-- Copy of the SIP content and the source and destination IP address of the intercepted
-- SIP message as transmitted on the network layer (see clause 5.2.7).
h323Message [2] H323Message,
-- Copy of the H.323 content and the source and destination IP address of the intercepted
-- H.323 message as transmitted on the network layer (see clause 5.2.7).
...,
nationalIPMMIRIParameters [3] NationalIPMMIRIParameters,
-- This parameter is used according to national regulations
-- This parameter shall be delivered as an IRI-Report-record
xCAPMessage [4] OCTET STRING,
-- Copy of the XCAP message including all HTTP headers and contents
iRIOnlyOriginalIPMMMessage [5] OCTET STRING,
-- Copy of the IP MM signalling packet including the original IP and UDP/TCP headers
-- see clause 5.2.6.
iRIOnlySIPMessage [6] SIPMessage
-- Copy of the SIP content and the source and destination IP address of the intercepted
-- SIP message as transmitted on the network layer.
-- (see clause 5.2.6 and 5.2.7).
}
SIPMessage ::= SEQUENCE
{
iPSourceAddress [0] LI-PS-PDU.IPAddress,
iPDestinationAddress [1] LI-PS-PDU.IPAddress,
sIPContent [2] OCTET STRING,
...
}
H323Message ::= SEQUENCE
{
iPSourceAddress [0] LI-PS-PDU.IPAddress,
iPDestinationAddress [1] LI-PS-PDU.IPAddress,
h323Content [2] H323MessageContent,
...
}
H323MessageContent ::= CHOICE
{
h225CSMessageContent [0] OCTET STRING,
h225RASMessageContent [1] OCTET STRING,
h245MessageContent [2] OCTET STRING,
genericMessageContent [3] OCTET STRING,
...
}
NationalIPMMIRIParameters ::= SEQUENCE
{
countryCode [1] PrintableString (SIZE (2)),
-- Country Code according to ISO 3166-1 [20],
-- the country to which the parameters inserted after the extension marker apply.
...
-- In case a given country wants to use additional national parameters according to its law,
-- these national parameters should be defined using the ASN.1 syntax and added after the
-- extension marker (...).
-- It is recommended that "version parameter" and "vendor identification parameter" are
-- included in the national parameters definition. Vendor identifications can be
-- retrieved from the IANA web site. Besides, it is recommended
-- to avoid using tags from 240 to 255 in a formal type definition.
}
AdditionalSignalling ::= CHOICE
{
sipHeaderLine [0] OCTET STRING,
-- A SIP header line, eg: "Contact: tel:+123456789".
...
}
END -- end of IPMultimediaPDU