ADTRAN 3060 specifications Install the LTU, Provision the LTU

3. INSTALL THE LTU

The Total Access 3010 LTU delivers an E1 signal over an HDSL local loop. The local loop in the H-LSS configuration includes two independent 4-wire circuits. The two LTUs communicate to their respective remote units, the NTUs. When an H-LSS switch occurs, the AUX circuit takes over transmitting the data load from the MAIN circuit until the MAIN circuit is restored.

3.1Install 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.

3.1.1Gently 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.

3.1.2Push the ejector tab up and closed against the LTU faceplate.

3.2Provision 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.

If this is an initial installation, the units will require provisioning to appropriately configure them out of the factory default states.

3.2.1Logon to Total Access system.

3.2.2Check to ensure the LTU line cards are correctly provisioned according to circuit parameters. Under the Provisioning Menu, set numbered option, Network Source, to Auto MUX. This option causes the LTU to look to the ON-LINE MUX for its data in the event of a protection switch between the MUX modules.

3.2.3Ensure the provisioning of both the MAIN and AUX LTUs is identical, except for the following options:

a.Provision the MAIN unit to OOS-Mmode.

b.Provision the AUX unit to the OOS-Umode.

3.2.4Enable protection switching.

a.Access the MAIN Menu of the LTU in the odd-numbered (MAIN) slot.

b.Select Option 7, Protection Configuration.

c.Select Option 1, Protection Mode.

d.To enable protection switching, select Option1, Enable.

Unless the AUX circuit is in the OOS-U mode, the operator will not be able to change the Protection mode of the MAIN LTU.

e.Set Options 2 and 3, BER Threshold and BER Interval (see Table 2).

f.Back out of the menu for the MAIN slot and access the LTU in the even-numbered (AUX) slot.

g.Select Option 7, Protection Configuration.

h.Option 1, Protection Mode, will have been set to AUTO. If you desire to provision a different H-LSS mode, select Option 1, and choose between Auto, Manual AUX, Manual Main, or Auto Hold.

i.Set Options 2-7 as desired on the AUX unit. (see Table 2).

61182007L1-5A Section 61182007L1-5, Issue 1 B-3