§ 11 TDDDG
Itemised Bill
(1)The traffic data under Section 9(1) sentence 1 Nos. 1 to 3 of those connections for which the end user is liable to pay charges must be communicated to the end user by providers and participating persons under Section 3(2) sentence 1 Nos. 1 and 2, if the end user has requested an itemised bill before the relevant billing period. At the end user's request, data on connections covered by a flat-rate charge may also be communicated. In doing so, the end user shall decide whether the telephone numbers dialled by him or her are communicated in full or with the last three digits omitted. In the case of a subscriber connection in a household, the communication is only permissible if the subscriber has declared in text form that he or she has informed all persons belonging to the household who use the subscriber connection, and will inform future co-users of the subscriber connection without delay, that the traffic data under sentence 1 will be disclosed to the subscriber for the purpose of issuing the itemised bill.
(2)Without prejudice to paragraph 1, the traffic data under paragraph 1 sentence 1 may be communicated to the end user where the end user has raised objections to the amount of the connection charges. This also applies to a mobile telephone connection.
(3)In the case of subscriber connections in businesses and public authorities, the communication is only permissible if the subscriber has declared in text form that the employees have been informed and future employees will be informed without delay, and that the works council or staff representation body has been involved in accordance with the statutory provisions or that such involvement is not necessary. Insofar as the public-law religious communities have enacted their own employee representation rules for their area, sentence 1 shall apply with the proviso that the respective employee representation body takes the place of the works council or staff representation body.
(4)Insofar as a subscriber is obliged to pay wholly or partly for the charges for connections arriving at his or her connection, only the numbers of the connections from which the calls originated may be communicated to the subscriber in the itemised bill intended for the subscriber, with the last three digits omitted.
(5)The itemised bill under paragraph 1 sentence 1 must not reveal connections to lines 1 whose subscribers are persons, authorities, or organisations in social or ecclesiastical fields that predominantly or wholly offer telephone counselling to end users who generally remain anonymous in situations of emotional or social distress and that are themselves or whose employees are subject to special duties of confidentiality, and; 2 that have been included in a list by the Federal Network Agency for Electricity, Gas, Telecommunications, Post and Railway (Federal Network Agency).
(6)Counselling within the meaning of paragraph 5 No. 1 is provided, in addition to the groups of persons referred to in Section 203(1) Nos. 4 and 5 of the Criminal Code, in particular by the telephone counselling service and the health counselling service. The Federal Network Agency shall include the subscribers of the connections in the list upon application, where they have proved their purpose as defined in paragraph 5 No. 1 by means of a certificate of a public authority or corporation, institution, or foundation under public law. The list shall be made available for retrieval by automated procedure. The persons obliged under Section 3(2) sentence 1 who prepare itemised bills must query the list on a quarterly basis and apply any changes without delay in their billing procedures.