| 摘要 |
A system for testing telecommunications equipment located at two sites comprises a set of test instruments (12, 13) located at each site, a local test controller (14, 15) located at each site for controlling the test instrument (12, 13) at that site, and a master test controller (20) connected to the local test controller (14, 16) by data links (21, 22). Each test controller (14, 15 and 20) is provided with a clock (16, 17, 23) and the clocks are synchronised by a common timing signal. The master test controller (20) is arranged to transmit test instructions to, and receive test results from, the local test controllers (14, 15).
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