Test method for testing a subscriber connection

Test method for testing a subscriber connection (TS, TL) in a program-controlled communications system or switching device (EWSD), a first or a second test run program module (CT, LT), a test address data program module (TA) and a test decision program module (UC) initiating and performing test routines. To identify test limit values, these values are read out from a test data program module (CD) by means of variant-specific retrieval sequences in the sense of a decision tree (E). The test limit values required for line testing can be defined by the operator.