| 摘要 |
For monitoring data transmission errors of a digital subscriber line (3), transmission errors are determined in a device (1) of a residential local area network (2) connected to the digital subscriber line (3) based on checksum errors of protocol data units at a communication protocol layer above the physical layer and the data link layer, e.g. TCP segments and/or UDP datagrams. If a defined error limit is exceeded, the data transmission errors are reported by the device (1) via the digital subscriber line (3) to an error handling server (4). Detecting the data transmission errors at a communication protocol layer above the physical and data link layers makes it possible to detect errors related to the actual application-specific payload data, and to produce a performance measure that is more indicative of user perception and customer experience than a conventional error count at the physical layer.
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