Abstract: An efficient and reliable monitoring of users of a telecommunication network is achieved by means of a method for the monitoring of a telecommunication user's data transmitted by a telecommunication network (4). Copies of the data are transmitted to at least one listening station (LEA 6;7;8;9), whereby the data is sent from an exchange device (VSGSN; HSGSN etc.), as a copy, to a monitoring handling device (CIH 14) and sent from said device (CIH 14) to one (7) of a number of addresses of listening stations (LEA 7;8;9) known thereto (CIH 14).

Abstract: The invention relates to a pen comprising a first casing (32) and a writing unit (12), which is inserted into said first casing. According to the invention, the pen comprises the following: a first stop (24, 42), which is coupled to the writing unit and acts in a peripheral direction about the longitudinal axis (L) of said writing unit; a second stop, which is coupled to the first casing (32), acts in a peripheral direction about the longitudinal axis and interacts with the first stop (24, 42) in a predetermined first rotational position of the writing unit with respect to the first casing, the first and second stops (24, 42, 26) abutting each other in the first predetermined rotational position; a third stop (28), which is coupled to the writing unit and acts in the longitudinal direction, in addition to a fourth stop, which is coupled to the first casing (32), acts in the longitudinal direction and interacts with the third stop (28). Said third stop (28) is configured as a guide device for the fourth stop.

Abstract: The invention relates to a pen comprising a first casing (32) and a writing unit (12), which is inserted into said first casing. According to the invention, the pen comprises the following: a first stop (24,42), which is coupled to the writing unit and acts in a peripheral direction about the longitudinal axis (L) of said writing unit; a second stop, which is coupled to the first casing (32), acts in a peripheral direction about the longitudinal axis and interacts with the first stop (24, 42) in a predetermined first rotational position of the writing unit with respect to the first casing, the first and second stops (24, 42, 26) abutting each other in the first predetermined rotational position; a third stop (28), which is coupled to the writing unit and acts in the longitudinal direction, in addition to a fourth stop, which is coupled to the first casing (32), acts in the longitudinal direction and interacts with the third stop (28). Said third stop (28) is configured as a guide device for the fourth stop.