ADCP-61-471 • Issue 4 • June 2000 • Section 2: Operation and Maintenance
DLP-515
Page 1 of 1
HDSL-EQUIPPED CIRCUIT CROSS-CONNECTS
Summary: This procedure provides instructions for making any necessary cross-connects on HDSL loops, and then re-install the HLXC modules.
Danger: To avoid electric shock, be careful when working near HDSL loop connections or telecommunications circuits. An electrical potential of ±130 volts exists on HDSL loop connections and telecommunications circuits. Coming in contact with this high electrical potential will result in death or severe personal injury.
Caution: Electronic modules can be damaged by electrostatic discharge (ESD). Before handling modules, wear an anti-static discharge wrist strap to prevent damage to electronic components. Place modules in anti-static packing material when transporting or storing. When working on modules, always place them on an approved anti-static mat that is electrically grounded.
1.Open the chassis cover.
2.Use the ejector at the bottom of each HLXC module front panel to carefully disengage the module from its connector.
3.Withdraw each HLXC module part way to break electrical contact with the backplane connector.
Note: The HLXC module can be configured to supply –130 VDC simplex current over the HDSL loops to supply power to the remote HLXR modules. When an HDSL Repeater (HRX) is in the HDSL loops, HLXC modules can be configured to supply ±130 VDC. Partially withdrawing the HLXC module ensures that current is not present when cross-connects are installed.
4.At the central office, make necessary cross-connects at the Main Distribution Frame, or other facility, in accordance with local practice.
5.At the remote location, make necessary cross-connects at the remote distribution frame, or other facility, in accordance with local practice.
6.Re-install the HLXC module(s) in their mounting slots.
Stop! You have completed this procedure.
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© 2000, ADC Telecommunications, Inc.
