Introduction
This section provides step-by-step instructions for the configuration and turnup of an HDSL Loop Support System (H-LSS) circuit on an HDSL loop fed from the network via individual G.703. Configuration procedures include installing appropriate line and remote cards, configuring the Total Access LTU cards for protection switching operation and enabling the protection switching feature.
Protection pairs on the Total Access 3010 system are adjacent odd-even slots, indicated on the Total Access 3010 front shelf screening. The odd slot on the left is the MAIN circuit; the even slot to the right is the AUX, or backup circuit.
Prerequisite Procedures
Before beginning the configuration and turnup procedure described in this NTP, the user should ensure that a Total Access 3010 shelf is properly installed and wired for G.703 network feeds. Also, ensure the SCU is installed and provisioned.
NOTE
Valid protection pairs are the adjacent odd-even slots in the Total Access 3010 shelf, and are further designated by the “brackets” on the lower front silkscreen of the Total Access 3010 chassis. The left (odd-numbered) slot in the pair is the MAIN; the right (even-numbered) slot is the AUX circuit for the pair. Thus, Slots 1 and 2 are a valid protection pair, but Slots 6 and 7 are not. The pair must have the odd-numbered slot to the left in the pair.
NOTE
This procedure assumes that the technician turning up the protected circuit knows which pair of slots has been assigned to the circuit, and that a single G.703 signal from the appropriate source, generally a G.703 cross connect, has been routed and wired to the appropriate pairs of pins on backplane connectors labeled Pair 7 and Pair 8. For a protected circuit, the appropriate pin pairs that should receive the G.703 from the network are the odd numbered pins corresponding to the MAIN, odd numbered slot.
Materials Required
•Total Access 3010 chassis installed and wired, with SCU.
•Two Total Access 3010 LTUs.
•Two protection switching capable NTUs. These NTUs are the following - 1246035L1 T200 mechanics.
•One dual-slot remote housing, ADTRAN P/N 1245034L2.
1.INSTALL THE LTUs INTO TOTAL ACCESS 3010
Electronic modules can be damaged by static electrical discharge. Before handling modules, wear an antistatic discharge wrist strap to prevent damage to electronic components. Place modules in antistatic packing material when transporting or storing. When working on modules, always place them on an approved antistatic mat that is electrically grounded.
1.1Gently but firmly push the LTU into the appropriate odd-numbered slot (which will be the MAIN HDSL circuit). Compatible slots can be any slot pair that starts with an odd number (MAIN) and includes the adjacent (to the right) even-numbered slot (AUX). Compatible slot pairs are further designated by the bracket notation around the slot pairs on the silk screen just below the physical slots on the front of the Total Access 3010. Simultaneous thumb pressure at the top (above the PWR LED) and bottom (below the ACT LED) of the unit will ensure a good seat of the LTU pins into the backplane connector. Repeat this step for the AUX LTU to be installed in the adjacent (even, to the right) slot.
1.2Push the ejector tab up and closed against the LTU faceplate.
2.PROVISION THE LTU
If Module Auto-Provisioning is enabled on the SCU, and if the new cards are of the same type as the former, the provisioning of the former access cards of the two Total Access 3010 slots will be written to the new access cards upon installation.
