scope:

The present document gives guidance for the delivery and associated issues of retained data of telecommunications and subscribers. It provides a set of requirements relating to handover interfaces for the retained traffic data and subscriber data by law enforcement and other authorized requesting authorities. The requirements are to support the implementation of Directive 2006/24/EC [1] of the European Parliament and of the Council of 15 March 2006 on the retention of data.

The present document describes the requirements from a Law Enforcement Agency's (LEA's) point of view.

Not all requirements necessarily apply in one individual nation.

These requirements may be used to derive specific network requirements and furthermore to standardize handover interfaces.

The present document gives the requirements for the delivery of Retained Data (in line with TS 101 331 [2] for LI).

NOTE: Reading the present document it should be taken in account that: This is an ETSI document and will not only apply to countries falling under the Directive (not only EU countries). Limitations in what data to be retained are a national issue. The present document and the Handover specification are not mandatory. Where necessary the present document will clarify functionality of the Directive. The Directive text sometimes seems to combine issues from a telecom perspective. The Directive text might use ambiguous wording from a telecom perspective. Additional issues could be added to fulfil national requirements.