Abstract: The invention concerns autoconfiguration of control connections in a telecommunication switch. Multiplexers (31, 32, 33) themselves and without external control information find out which ports of the switching fabric (34) they are in connection with. After finding out the ports, logical connections are established. Each multiplexer forms probe cells addressed to each of the ports (0, 1, 2). Each probe cell includes one port index, preferably in the header. The switching fabric (34) switches the probe cell to that output port which has been indicated in the header of the probe cell. Thus, those probe cells fed from a port into the switching fabric are returned to the same port if the target in the header is the same as the port number. In consequence of this, the multiplexer receives only the same kind of probe cells. After the connection ports have been determined, a logical connection between each of the multiplexers (31, 32, 33) and the operation and maintenance unit (35) is established.

Abstract: A method and system for updating software in a network element of a telecommunication network the units of which are divided into an original side and testing side. The system includes a network element, having units that are logically divided into an original side and testing side, an original software for performing traffic transmitting tasks, and a new piece of software to be tested and/or introduced. At least one test connections is directed into the units of testing side loaded with the new piece of software, in order to be able to test the new piece of software.

Abstract: The invention concerns autoconfiguration of control connections in a telecommunication switch. Multiplexers (31, 32, 33) themselves and without external control information find out which ports of the switching fabric (34) they are in connection with. After finding out the ports, logical connections are established. Each multiplexer forms probe cells addressed to each of the ports (0, 1, 2). Each probe cell includes one port index, preferably in the header. The switching fabric (34) switches the probe cell to that output port which has been indicated in the header of the probe cell. Thus, those probe cells fed from a port into the switching fabric are returned to the same port if the target in the header is the same as the port number. In consequence of this, the multiplexer receives only the same kind of probe cells. After the connection ports have been determined, a logical connection between each of the multiplexers (31, 32, 33) and the operation and maintenance unit (35) is established.