4. It is mandatory for customs authorities, manufacturers and sellers of
telecommunication materials to cooperate with the Telecommunications
Administration in this contract, as stipulated by the regulations.
Article 25º
Terminal equipment
1. The market for subscriber terminal equipment is open to competition, with
acquisition, installation and conservation free from controls or constraints.
2. Connecting terminal equipment to the public telecommunications network
shall be subject to the conditions set forth in the regulations and to prior
approval, by type, issued by the competent entity under the Department of
Telecommunications, in order to ensure its compatibility with the public
telecommunications network.
3. The approval stipulated in the previous item is mandatory for all radio
electric terminal equipment, whether or not intended for connection to the public
telecommunications network.
4. The Department of Telecommunications shall establish the procedures
and the specific conditions for obtaining approval by type and publicly announce
the technical characteristics of the terminal equipment, including those required
for connection to the public telecommunications network.
5. Rendering the services required for the installation and conservation of the
subscriber terminal equipment shall only be undertaken by dulyauthorized
individuals or companies.
6. Telecommunication carriers shall ensure adequate connections to their
networks, regardless of whether or not the terminal equipment is owned by the
users thereof.
Article 26º
Confidentiality of messages
1. Taking into consideration the constraints imposed by their nature and the
purpose for which they are intended, the inviolable confidentiality and privacy of
public telecommunication services is guaranteed as stipulated by law.
2. The telecommunication carriers shall adopt all measures required to
ensure the confidentiality of messages forwarded through the services under
their responsibility.