| 摘要 |
A telephone service panel includes a panel base assembly having multiple subscriber modules each having a test receptacle connected to an incoming line, and each having a set of subscriber terminals for connection to a local subscriber circuit; access to each receptacle is blocked by an individual subscriber-controlled padlocked cover; a composite cover over all the test receptacles consists essentially of a spine carrying the padlocked covers and locked to the panel base assembly, but releasable by service personnel for access to all the subscriber modules. So long as the test receptacle is empty, each subscriber circuit is connected to its incoming line; to disconnect the subscriber circuit from the incoming line, it is only necessary to insert the plug of a test device into the test receptacle; insertion of the plug also connects the test device to the incoming line. When a local subscriber circuit is to be connected to the panel, it is unnecessary to release the composite cover; it is sufficient to release one of the covers to gain access to a set of subscriber terminals.
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