Avamprogetto 2b

6. Geographical redundancy shall be implemented to increase the DN’s reliability (two disjoint paths to each of the LEMF sites).

7. Cost-effective installation and operation should be sought.

8. Low administrative expenses should be incurred.

9. Appropriate DNs for CSPs of all sizes shall be defined, i.e. different solutions according to requirements (e.g. number of customers of the CSP, number of interceptions, network architecture of the CSP, data volume per interception).

10. The cost implications for all parties involved shall be taken into consideration.

11. The PTSS and the FOITT shall adhere to the federal rules on information

protection and data security.

12. The DN’s scalability shall be ensured (fast and simple expansion of available capacity or bandwidth).

13. The hardware and software shall be vendor-neutral.

14. No PTSS equipment shall be on the CSP’s premises (except in the case of interceptions implemented by the PTSS).

15. Responsibilities shall be clearly defined between all parties involved.

16. There shall be clear definition of the handover points (DN-HP) between all parties involved.

17. The DN implementation shall respect investment protection.

18. The DN shall be useable for data transmission in both directions (bi-directional), for example for requests and responses related to Warrant Management and Historical Data.

6 Overview of the delivery networks

6.1 Functional architecture

This document covers the delivery network (no. 4 in Figure 2) between the CSPs and the LEMF in accordance with the Swiss LI reference model. The access network (no. 6 in Figure 2) between the LEMF and the LEA is not addressed in this document.