Vorlage 3b

detailed technical interface requirements a CSP must meet in order to be able to connect to the DN, contains confidential information concerning the interfaces, addresses and delivery networks (e.g. telephone numbers, IP addresses, network diagrams), services (e.g. contacts, availability, failure notifications) and specifies the service level required of the corresponding delivery network, as well as the mechanisms and parameters required by a user entity (e.g. user system, system administrator) for configuration purposes.

The specifications set out in the present document and in the bilateral connection agreements contain all the information needed for implementation and operation of user systems of the corresponding delivery networks.

The document governing the level of lawful interception formats is Annex 1. These aspects are not described in this document.

6.2 Overview of roles in the DN

1. Role of the CSP

2. Role of the LEMF

3. Role of the delivery network provider

6.3 Overview of the LEMF network interfaces with CSPs

1. ISDN interface for CC of CS interceptions

2. Alternatively: IP interface for CC of CS interceptions (with ISDN/PSTN emulation)

3. IP interface for IRI of CS interceptions

4. IP interface for CC and IRI of PS interceptions

5. TCP/IP interfaces for HD (HI-A (administrative) and HI-B (results))

6. TCP/IP interface for HI1 (Order Management and Administration)

7. TCP/IP interface for Information Requests and results

6.4 Overview of the delivery networks between the LEMF and CSPs

1. IP DN: Delivery network for interfaces no. 2, 3 and 4 according to section 6.3.

2. ISDN DN: Delivery network for interface no. 1 according to section 6.3.

3. IP DN for interfaces no. 5, 6 and 7 according to section 6.3.

6.5 Basic topologies of delivery networks

Delivery networks can be divided into two basic topologies:

1. Stratified delivery networks, see Figure 4

2. Concatenated delivery networks, see Figure 5 and Figure 6

There are also combinations of these basic topologies.

The diagrams refer to the area between the CSP and the handover point to the PTSS domain. Another distinction can be made by the implementation of the handover point, which may be either:

1. in-house (see Figure 4 and Figure 6), or

2. in-span (see Figure 5).