Abstract: A system and method for accessing a number of communication lines by one or more testing devices are disclosed. Each of the communications lines is coupled through the system and includes a first termination at a first telecommunications termination site and a second termination at a second telecommunications termination site. The system includes a number of line access devices, each of which is coupled to at least one of the communication lines terminating at the first telecommunications termination site and at least one of the communication lines terminating at the second telecommunications termination site. One or more monitoring busses are defined by a number of relays, one or more of which is coupled to one of the line access devices. A test device interface, which is selectively coupled to the bus, provides bi-directional connectivity between the selected communication line and a selected testing device coupled thereto.

Abstract: A system and method provide for accessing a plurality of communication lines. Each of a number of line access devices is coupled to at least one of the communication lines. A patch circuit, associated with each line access device, provides for manually establishing a cross-connection between a first and second communication line. A bus couples the first communication line with the patch circuit. A locking circuit is coupled to the bus and the patch circuit. The locking circuit selectively enables and disables patch circuit access to the first communication line in response to a control signal. The line access devices may each comprise a single line card or a front and rear line card pair. A redundant power supply arrangement provides for keep-alive backup power for the front line card in response to a failure of primary supply power delivery to the front line card.

Abstract: A system and method for accessing a number of communication lines by one or more testing devices are disclosed. Each of the communications lines is coupled through the system and includes a first termination at a first telecommunications termination site and a second termination at a second telecommunications termination site. The system includes a number of line access devices, each of which is coupled to at least one of the communication lines terminating at the first telecommunications termination site and at least one of the communication lines terminating at the second telecommunications termination site. One or more monitoring busses are defined by a number of relays, one or more of which is coupled to one of the line access devices. A test device interface, which is selectively coupled to the bus, provides bi-directional connectivity between the selected communication line and a selected testing device coupled thereto.

Abstract: A system and method provide for accessing a plurality of communication lines. Each of a number of line access devices is coupled to at least one of the communication lines. A patch circuit, associated with each line access device, provides for manually establishing a cross-connection between a first and second communication line. A bus couples the first communication line with the patch circuit. A locking circuit is coupled to the bus and the patch circuit. The locking circuit selectively enables and disables patch circuit access to the first communication line in response to a control signal. The line access devices may each comprise a single line card or a front and rear line card pair. A redundant power supply arrangement provides for keep-alive backup power for the front line card in response to a failure of primary supply power delivery to the front line card.