The present invention relates to a method for handling long delays in telecommunication systems, especially in connection with transparent fax services in telecom systems wherein a Global System for Mobile commmunication (GSM) is used, and wherein is used at least one Fax Adaptor/Inter Working Function (FA/IWF), and for the purpose of improving such a telecom system in relation to prior art solutions, it is according to the present invention suggested that said method involves changes in said at least one FA/IWF only. More specifically, the method involves sending of T.30 signals (command or response) towards either of the communication links, only when the associated algorithm has detected a safe period.

The present invention relates to a method for improving transmission between terminals in a telecommunication system, especially the transmission between two fax machines connected for fax transmission, and in order to solve the problem of long delays and enhance the utilization of the protocols in question, it is according to the present invention suggested that the total connection between the two fax machines are divided in at least two separate connections.