Abstract: A method of determining a communication partner's technical address for a user. A directory is provided that includes at least one technical address and at least one identifier for each one of a plurality of possible communication partners for a user. Based on an input from the user, at least one communication partner is obtained from the directory and is suggested to the user. At least one of the steps of providing the directory or suggesting the communication partner is performed automatically based on the user's previous communication behavior. A telecommunications apparatus is provided for performing the method.