Avamprogetto 2a

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

Network access and telephony

and multimedia services real-time ETSI TS 101 671 V3.12.1 6.5.1 interception with Interception or

Related Information only ETSI TS 133 108 V13.4.0 6.5.2 or

ETSI TS 102 232-1 V3.11.1 & 6.5.3 ETSI TS 102 232-5 V3.5.1 6.5.6 or

ETSI TS 102 232-1 V3.11.1 & 6.5.3 ETSI TS 102 232-6 V3.3.1 6.5.7

Table 6-3: Emergency paging real-time interception types

6.3 Common identifiers and parameters of the handover interfaces

This section provides information about the definition and format of several identifiers and parameters that are common to several handover interfaces for the delivery of real-time interception data. Some of these identifiers and parameters are present in all handover interfaces while others are present only in some of them.

6.3.1 Lawful Interception Identifier (LIID)

The LIID according to ETSI TS 101 671 V3.12.1 §6.1 and ETSI TS 102 232-1 V3.11.1 §5.2.2 and ETSI TS 133 108 V13.4.0§5.1 consists of maximum 25 numbered digits (0..9) for the sub-address option according to ETSI TS 101 671 V3.12.1 annex E respectively to ETSI TS 133 108 V13.4.0 Annex J.

Lawful Interception in Switzerland supports the LIID format for sub-address option according to ETSI TS 101 671 V3.12.1 Annex E and ETSI TS 133 108 V13.4.0 Annex J, but requires only a maximum of 15 numbered digits (0..9).

The LIID parameter is generated by the PTSS and provided to the CSP.

a. For the LIID in the Calling Party Number in the circuit switched handover interfaces using

ETSI TS 101 671 V3.12.1 or ETSI TS 133 108 V13.4.0:

The LIID delivered to the LEMF in the Calling Party Subaddress, when a CC-link is being established, shall meet the requirements specified in ETSI TS 101 671 V3.12.1 Annex E,

Table E.3.5, and ETSI TS 133 108 V13.4.0 Annex J, Table J.2.6, where digit 1 is the most significant digit. After the last digit (maximum digit 15), the field separator determines the end

of the field. The subsequent field “direction” shall be rearranged, i.e. mapped into octet 12, whereas the service octets must still be mapped into octets 19-23.

b. For the LIID in the IRI-Records:

For the LIID contained within the IRI-Records, ETSI TS 101 671 V3.12.1 Annex D.5 the IRI-

Parameter LawfulInterceptionIdentifier applies.

Note that ETSI TS 102 232-1 and ETSI TS 133 108 V13.4.0 import this parameter from ETSI

TS 101 671 V3.12.1.