Method for measuring in the subscriber area of an integrated services digital network system

摘要

Between the net termination and the subscriber's data terminals forming the boundary to the subscriber area, procedures peculiar to the interface take place in the form of a two-way transmission and reception of data sequences. The order of the data sequence and the transmit duration of each data sequence is stipulated, which adversely affects the measuring tasks in the subscriber area. PPTo avoid these adverse effects, a test pattern generator is used that is able to transmit all data sequences required for the procedures in an order and a duration that is desired from a metrological standpoint. Freely definable data sequences can be transmitted by the test pattern generator for measuring purposes. Furthermore, the test pattern generator is able to transmit control and/or identification data synchronously to the data sequences.