Abstract: In known telecommunication networks users of a facsimile machine are not identified. As a result, no evidential value relating to the identity of the sending user or the identity of the receiving user and the originality of the contents of the facsimile message can be derived from messages sent by facsimile machines. A telecommunication network according to the invention comprises identification means for processing a user identification signal. The identification means are also arranged for producing a message encrypted according to a digital signature method, which message states that a facsimile message has been exchanged between a sending user and a receiving user. The message is produced in a machine-readable code. Since this message can only be generated by the identification means and the contents cannot be modified unnoticed later on, this is proof of an exchange of a facsimile message between the sending user and the receiving user.