Vorlage 3a

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

Each subsequent row contains a Cell-ID with the corresponding coordinates and beam direction as follows:

1. CGI or ECGI (1st column)

2. E-Coordinate (east) (2nd column)

3. N-Coordinate (north) (3rd column)

4. Direction of main beam of antenna (4th column)

5. Postal address

The contents of the table must be saved in CSV (Comma Separated Values) format

according to IETF RFC 4180. This format separates columns of data by commas and rows by carriage return.

The filename of the table must have the following format (the prefix CM means “Cell-ID Map”): CM_operatorXY_yyyymmdd.csv

where

<operatorXY> Name of the operator providing the table

<yyyymmdd> Date of table delivery

The following example shows the contents of a Cell-ID correlation table in CSV format,

mapping several Cell-IDs:

OperatorXY,20101201,,,

228-0X-56F0-B64B,2600000,1200000,26,Bern Bundesgasse 8

228-0X-57F3-C76A, 2612480, 1176801,45,Autobahn A6 Weststr.km29.750 3600 Thun 228-0X--ABCD123,2585864,1219119,-1,Ringstrasse 10 2560 Port

…

6.4 ASN.1 parameters definition

All parameters designated as “conditional“ or “optional” in the ETSI specifications must always be delivered to the LEMF when available and not otherwise specified.

6.5 Handover interfaces requirements and options

This section provides detailed information about the different requirements and options to be used in Switzerland for the handover interfaces specified by ETSI. Depending on the realtime interception type the CSP in agreement with the PTSS may choose to use one of those handover interfaces.

6.5.1 ETSI TS 101 671 V3.12.1 Handover interface for the lawful interception of telecommunications traffic

This handover interface may be used for the delivery of the intercepted data related to telephony service in the circuit switched domain, such as PSTN, ISDN, GSM and UMTS.

6.5.1.1 ETSI TS 101 671 V3.12.1 requirements and options

Note: The lawful interception requirements related to the TETRA technology are not

applicable in Switzerland.