Vorlage 3a

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

Clause Selection of ETSI options for Additional requirements

ETSI TS Switzerland

101 671

V3.12.1

Annex E: Use of sub-address and calling party number to carry correlation information E.3.2 Field order and layout

Parameter assignment for CC in

accordance to tables E.3.2 and E.3.4

(and the E.3.4 based example in

E.3.6) for the Called Party

Subaddress and tables E.3.3 and

E.3.8 (and the E.3.5 based example

in E.3.7) for the Calling Party

Subaddress, make provision to

correlate CC with IRI according to

ETSI TS 101 671 Annex A.1.2.

Annex I: Evolved Packet System Handover I Evolved Packet System handover

For Evolved Packet System the See section 6.5.2.2

Lawful Interception handover

interface defined in ETSI TS 133 108

V13.4.0 shall be used.

Table 6-8: ETSI TS 101 671 V3.12.1 requirements and options

The supported ASN.1 Object identifiers and versions are stated in section 6.6

6.5.1.1.1 Conventions for Subaddress encoding for ETSI TS 101 671 V3.12.1

ETSI TS 101 671 V3.12.1 Annexes E.3.1 and E.3.2 define the coding rules for the various parameters contained in Called and Calling Party Subaddress field. The following rules apply:

a) For numeric values the digit 1 shall be the Most Significant Digit (MSD) while digit n shall

be the Least Significant Digit (LSD), see ETSI TS 101 671 V3.12.1 Annex E.3.1, last paragraph.

b) All the fields according to ETSI TS 101 671 V3.12.1 Table E.3.2 (refers to Called Party

Subaddress) and Table E.3.3 (refers to Calling Party Subaddress) shall be present and appear in the defined order, even if some fields are empty.

c) An empty field shall be indicated by two consecutive Field separators (“FF” hex), see

ETSI TS 101 671 V3.12.1 Annex E.3.2, first paragraph underneath Table E.3.2 with the following clarification:

An “empty field” appears as “empty field consisting of one field separator” (single halfoctet). In this case ONE field separator appear after the field separator of the preceding field, followed by the next field, that could take a value or be empty. For a single (isolated) empty field there are two field separators present in total, one is the field separator of the preceding field and the other is for the empty field; for two (consecutive) empty fields there are three field separators present in total, one is the field separator of the preceding field and the remaining are one for each empty field; for three