Abstract: The invention relates to a process for installation of a first program code on a server which is connected via a communication network with an installation server and on which a second program code is already installed. The invention further relates to the server and the installation server for performance of this process. A first data set containing the first program code is sent by the installation server via the communication network to the server. A second data set containing a test code for the first program code to be installed is sent by the installation server via the communication network to the server. Before integration of the first program code in the second program code, the server by means of the test code checks the second program code on the server to establish whether it is compatible with the first program code. Only if the result of this check is positive does the server integrate the first program code in the second program code already on the server.

Abstract: A method for controlling the installation of first program codes on network elements of a telecommunications network using a network management system, and a network management server. Upon a first instruction of an operator of the telecommunications network, the network management system causes a first program code, to be transmitted from a service server to the network management server. The network management server transmits the first program code to one or more network elements of the telecommunications network and causes the first program code to be integrated into the second program code already installed on the respective network element. Upon a second instruction of the operator, the network management system activates this installation of the first program code for a limited area of the telecommunications network. Upon a third instruction of the operator, the network management system activates the installation of the first program code in the active network area of the telecommunications network.