A method, device and computer program product for monitoring data transmission connections. The method comprises monitoring data transmission connections between a cellular radio network and a subscriber terminal with two analyzers. With the first analyzer, first connection information is collected on a first data transmission connection of the subscriber terminal to a first cell. With the second analyzer, second connection information is collected on a second data transmission connection of the subscriber terminal to a second cell. The first connection information is transferred from the first analyzer to the second analyzer. In the second analyzer, the first connection information is used combined with the second connection information for analyzing the second data transmission connection.