| 摘要 |
A testing and recording system is disclosed for determining and recording the cable pair-line equipment assignments in a telephone central office. Using a multipair shoe on the main frame appearances of the cable pair, an off-hook condition is simulated successively on each of a plurality of idle cable pairs. At the same time, the dial tone markers are monitored to determine which line equipment responds to the off-hook condition. If the off-hook test condition is of very brief duration and takes place during times of low central office traffic, there is a high probability that only one off-hook condition will occur during the test interval. If only one dial tone marker response occurs during this brief interval, the cable pair identification and line equipment identification are recorded to create a record of this assignment. Alternatively, a tone associated with each dial tone marker is detected to ascertain which marker responded to the simulated off-hook condition.
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