§ 14 TDDDG
Notification of Incoming Connections
(1)Where a subscriber makes a prima facie case in proceedings that threatening or harassing calls are received at his or her connection, the provider of the telecommunications service must, upon written application, also provide information across networks about the subscribers of the connection identifiers from which the connections originate; the proceedings must be documented. The information may only relate to connections and connection attempts that took place after the application was filed. The provider of the telecommunications service may process the connection identifiers, names, and addresses of the subscribers of those connection identifiers, as well as the date and time of the beginning of the connections and connection attempts, and may communicate such data to the affected subscriber.
(2)The disclosure under paragraph 1 sentence 3 may only take place if the affected subscriber has previously narrowed down the connections by date, time, or other suitable criteria, insofar as misuse of this procedure cannot be excluded by other means.
(3)In the case of cross-network information requests, the other providers and operators participating in the connection under Section 3(2) sentence 1 are obliged to provide the necessary information to the provider of the telecommunications service of the threatened or harassed subscriber, insofar as they possess such data.
(4)The subscriber of the connection identifier from which the identified connections originated must be notified that information about those connections has been provided. This may be dispensed with if the applicant has made a prima facie case in writing that substantial disadvantages may arise for the applicant from such notification, and those disadvantages appear to be substantially more serious when weighed against the interests of the callers worthy of protection. Where the subscriber of the connection identifier from which the calls characterised as threatening or harassing originated obtains knowledge of the provision of information under paragraph 1 sentence 3 by other means, the subscriber must be informed about the provision of information upon request.
(5)The supervisory authority must be notified without delay of the introduction of and changes to the procedure for compliance with the requirements of paragraphs 1 to 4.