Projet 2a

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

7 Historical Data (Retroactive Surveillance)

7.1 General

This section covers the general technical requirements that need to be fulfilled by PTSS and the CSP when requesting, respectively providing historical data responses, confined to the service usage category outlined in ETSI TS 102 657 V1.17.1, according to the legal

provisions set in the ordinance VÜPF section 10.

The framework of the retroactive data is divided in different types of services that follow the structure specified in ETSI TS 102 657 V1.17.1 clause 4.2.

Service Description

Telephony Telephony services covers those services offering the facilities listed in ETSI TS 102 657 V1.17.1 Annex B.1. It covers services that provides PSTN/ISDN functionality either offered over PSTN/ISDN or emulated PSTN/ISDN including GSM/UMTS-CS, SMS, EMS and MMS. It may also be used for VoIP and IMS if no IP layer information is needed.

Asynchronous Asynchronous messaging services covers asynchronous

message communications involving the intermediate storage of messages, as defined in ETSI TS 102 657 V1.17.1 Annex C.1. This includes e-mail, webmail but excludes chat, which is synchronous and excludes SMS, EMS and MMS which are addressed by the Telephony usage record. Synchronous Synchronous multimedia services covers synchronous multimedia Multi-media communication sessions such as VoIP and IMS as listed in ETSI TS 102 657 V1.17.1 Annex D.1.

Note: VoIP could also be covered by ETSI TS 102 657 V1.17.1 Annex B.1 if no IP layer information is needed.

Network access Network access services covers the services offering a capability to access the Internet), including wireline and wireless and Mobile internet access (such as GERAN, UTRAN and E-UTRAN), as defined in ETSI TS 102 657 V1.17.1 Annex E.1.

Table 7-1: Historical data service types

For all these services the encoding of the requests sent by PTSS and the retroactive data to be delivered by the CSP is limited to XML. The structure of the XML file shall be validated against the XML schema definition provided with the technical specification ETSI TS 102 657 V1.17.1. The version of the XML schema to be used for validation is defined in the section 7.6.