Important!

Low-speed OLIU circuit packs have more than one optical port. Each individual optical port can be provisioned for 1+1, UPSR, or 0x1Sn applications.

From the System View menu, select Reports → Status Lists → Port. Click on the low-speed OLIU circuit pack to be replaced and Select. Observe the value of the Switch State parameter for each port. If the port Switch State parameter is active, the port is active for transmission. Record any active ports and click Close.

Are there active ports on the low-speed OLIU circuit pack that you wish to replace?

To determine the protection groups associated with the active port(s) select View → Equipment. Expand the required low-speed OLIU circuit pack by clicking on the plus sign (+). Click on the required active port and Select. Observe the Application parameter to determine the type of protection.

To determine the protection group associated with other active ports, click on the required active port and Select. Click Close to exit.

If the Application parameter of any active ports is UPSR, at each node in the UPSR, select Reports → Path Protection List to verify that no Forced or Lockout path protection switches exist.

If required, clear any existing Forced or Lockout path protection switches using the Fault → Protection Switch → Path Protection → Switch Type Clear command.

If the Application parameter of the active port is 1+1, then perform a Forced protection switch to the standby line. Select Fault → Protection Switch. Click on the required 1+1 Line protection group and Select. Select the ForcedSwitch Type and click Apply.

Result:

A dialog box appears asking you to confirm executing this command. Click Yes.

Repeat this step for all active 1+1 ports.

To verify that a 1+1 line switch occurred, perform the following:

1. From the System View menu, select View → Protection.

2. Highlight the required 1+1 line protection group and click Select.

3. Verify that the port on the companion circuit pack is now active.

4. Verify that Switch Request State is Forced Switch.

Remove the optical cables from the circuit pack.

Important!

The LNW37 4OC-3 and LNW49 4OC-12 OLIU circuit packs may be equipped with up to four pluggable transmission modules. The LNW45 8OC-3 OLIU circuit pack may be equipped with up to eight pluggable transmission modules.

The LNW55 OC3/OC12/OC48 OLIU circuit packs may be equipped with a mix of up to twelve OC-3/12/48 pluggable transmission modules.

The LNW62 4OC-48 OLIU circuit packs may be equipped with up to four pluggable transmission modules.

The LNW402 OC-48 OLIU circuit packs may be equipped with one pluggable transmission module.

If required, remove any pluggable transmission modules from the OLIU circuit pack .

Reference:

Procedure 6-5: Replace pluggable transmission module

Remove the circuit pack by grasping the inner edge of the locking-levers, and applying a constant pressure, pull the levers forward and remove the circuit pack.

Important!

Pluggable transmission modules are shipped with a dust cover installed into the optical ports to maintain cleanliness during storage and/or transportation. It is recommended that the dust cover be kept in place to maintain cleanliness until the optical fiber is connected. With proper care and handling, cleaning the pluggable transmission modules should not be necessary.

If required, clean the pluggable transmission module.

Reference:

Procedure 6-12: Clean optical pluggable transmission module

Note:

The LNW421, LNW423, LNW431, LNW433, LNW435, LNW437, LNW443, LNW445, and LNW457 circuit packs are DA'ed and are no longer available.

Are you installing an LNW421–459 OC-48 OLIU circuit pack?

From your work orders, determine the wavelength that you wish to set on the LNW421–459 circuit pack. Use the Channel Select Option Label on the faceplate of the circuit pack to determine the correct channel.

Example:

From the Channel Select Option Label on the faceplate of the LNW447 ( Figure 6-8, Channel select option label on LNW447), we determine that for the desired CH47 wavelength, we must select CH X.

Figure 6-8: Channel select option label on LNW447

Set the channel selection jumper on your circuit pack to either CH X or CH Y for your desired wavelength/channel ( Figure 6-9, Jumper settings for LNW421–459).

Figure 6-9: Jumper settings for LNW421–459

Using an erasable marker or pencil, check the appropriate box on the Channel Select Option Label ( Figure 6-8, Channel select option label on LNW447) that corresponds to your jumper setting.

Important!

This label is the only means available to identify the wavelength selected when the pack is fully-seated and/or in-service.

Holding the replacement OLIU circuit pack vertically, rotate the replacement OLIU circuit pack 90 degrees to the right (clockwise). The faceplate label (for example, LNW36/LNW37/LNW46) should be on your right, next to the fan unit.

Open both faceplate latches and seat the replacement OLIU circuit pack into the vacant Function Unit slot by applying steady pressure to both faceplate latches.

Result:

For LNW55 OC3/OC12/OC48 and LNW62 4OC-48 OLIU circuit packs, the FAULT LED lights for approximately 10 minutes then goes off, indicating successful installation.

For all other low-speed OLIU circuit packs, the FAULT LED lights for approximately 15 seconds then goes off, indicating successful installation.

Select View → Refresh System View and the circuit pack appears in the WaveStar^® CIT System View indicating successful installation.

If both the original OLIU circuit pack and the replacement OLIU circuit pack fail when no other transmission circuit packs are installed in the shelf, replace the SYSCTL circuit pack. Refer to Procedure 6-10: Upgrade or replace SYSCTL (LNW2) circuit pack.

Important!

The LNW37 4OC-3 and LNW49 4OC-12 OLIU circuit packs may be equipped with up to four pluggable transmission modules. The LNW45 8OC-3 OLIU circuit pack may be equipped with up to eight pluggable transmission modules.

The LNW55 OC3/OC12/OC48 OLIU circuit packs may be equipped with a mix of up to twelve OC-3/12/48 pluggable transmission modules.

The LNW62 4OC-48 OLIU circuit packs may be equipped with up to four pluggable transmission modules.

The LNW402 OC-48 OLIU circuit packs may be equipped with one pluggable transmission module.

If required, install the pluggable transmission modules.

Reference:

Procedure 6-5: Replace pluggable transmission module

Measure the optical receive power of the receive fiber using an optical power meter. Select the appropriate LBO to attenuate the receive signal to the middle of the allowable optical receive power range. (Refer to the Alcatel-Lucent 1665 Data Multiplexer Extend (DMXtend) Applications and Planning Guide, 365-372-324 for the SONET optical specifications of the replacement circuit pack.)

Ensure all optical fiber connectors and couplings are properly cleaned on the replacement OC-3/OC-12/OC-48 OLIU.

Important!

Signal performance may be degraded if the connections and couplings are not cleaned properly.

Reference:

Procedure 6-11: Clean optical fibers, dual LC adapters and LC lightguide buildouts (LBOs)

Reconnect the optical cables.

If required, clear any Forced 1+1 line protection switch(es) performed in Step 5. Select Fault → Protection Switch. Click on the required 1+1 Line protection group and Select. Select the Reset Switch Type and click Apply.

Result:

A dialog box appears asking you to confirm executing this command. Click Yes.

Repeat this step to clear all Forced 1+1 line protection switches.

To verify that a 1+1 line switch cleared, perform the following:

1. From the System View menu, select View → Protection.

2. Highlight the required 1+1 line protection group and click Select.

3. Verify that Switch Request State is No Request.

Result:

If Switch Request State reads Signal Failure or Signal Degrade, there is a higher priority switch request in place. Proceed to the next step.

From the System View menu, click the Alarm List button to obtain an NE Alarm List. Verify that no alarms are present for the installed circuit pack.

If required, refer to the appropriate procedure to clear any alarms.

From the System View menu, use View → Equipment to access the circuit pack/port parameters for the circuit pack just installed and verify that the parameters are intact.

If required, refer to the appropriate procedure in the Alcatel-Lucent 1665 Data Multiplexer Extend (DMXtend) User Operations Guide, 365-372-325 to change any circuit pack/port parameters.

End of steps