Projet 2a

Technical requirements for the handover interfaces for the execution of telecommunications surveillance

ISUP parameters according to ITU-T Q.699 (09/97) Parameters according to ETSI TS 101 671 V3.12.1 Table E.3.5 Calling Called ISUP ISUP ISUP Service Service Service Transmission User Service User Parameter Parameter Parameter Medium Information Teleservice octet 19 octet 20 octet 21 Requirement octet 1 Information (value “TMR”) (value “BC” (value “HLC” ITU-T Q.763 ITU-T Q.763 octet 2 octet 3) octet 4) (12/99) § 3.54 (12/99) ITU-T Q.763 § 3.57 (12/99) (coding see § 3.59 ITU-T Q.931 (coding see (05/98) ITU-T Q.931 § 4.5.5 octet 3) (05/98) § 4.5.17 octet 4)

3.1 kHz audio 3.1 kHz audio not present or OPTION a.: OPTION a.: OPTION a.: value matching 3.1 kHz audio 3.1 kHz audio “FF” hex or BC or “FF” hex value matching (NOTE 1) BC (NOTE 2) OPTION b.: OPTION b.: OPTION b.: 3.1 kHz audio “FF” hex “FF” hex OPTION c.: OPTION c.: OPTION c.: “FF” hex “FF” hex “FF” hex Third Target 3.1 kHz audio not present not present 3.1 kHz audio “FF” hex “FF” hex analog ISDN

or Inter-

working

Third Target 3.1 kHz audio not present not present OPTION a.: OPTION a.: OPTION a.: analog analog 3.1 kHz audio “FF” hex “FF” hex or Inter- OPTION b.: OPTION b.: OPTION b.: working 3.1 kHz audio “FF” hex “FF” hex

OPTION c.: OPTION c.: OPTION c.: “FF” hex “FF” hex “FF” hex

Table 6-9: Mapping of TMR, USI and UTI at IIF into Calling Party Subaddress service NOTE 1: Service Parameter octet 19 allows IIF an implementation option in situations where the information is contained in octet 20 thereby LEMF may ignore octet 19. NOTE 2: Service Parameter octet 21 may deliver “FF” hex, if the optional HLC has not been provided by the calling user.

6.5.2 ETSI TS 133 108 Handover interface for Lawful Interception

The handover interface specifications of ETSI TS 133 108 V13.4.0 are based on the description from the specification ETSI TS 133 107 V13.5.0 Lawful interception architecture and functions.

This handover interface is composed of two main parts. The first part may be used for the delivery of the intercepted data related to telephony service in the circuit switched domain, such as GSM and UMTS telephony. The section 6.5.2.1 specifies the requirements and options. The second part may be used for the delivery of the intercepted data related to all services based on the packet switched domain, such as GPRS, Evolved Packet System (EPS), non- 3GPP access, IMS-based VoIP, IMS Conference Services. The section 6.5.2.2 specifies the requirements and options.