Procedure 12-7: Upgrade low-speed electrical circuit packs
Overview
Use this procedure to upgrade the following in-service low-speed electrical circuit packs in a function unit.
Important!
To upgrade LNW111 3DS3, LNW112 16DS1PM, and LNW39 3DS3/16DS1 circuit packs in the A/B slots, refer to Procedure 12-9: Upgrade low-speed electrical circuit packs in A/B slots.
To upgrade LNW16 12DS3/EC1, LNW18 12TMUX, or LNW19/19B 48DS3/EC1 to LNW20 48TMUXDS3EC1 circuit packs, refer to Procedure 12-18: Upgrade TMUX/DS3/EC1 to LNW20 48TMUXDS3EC1 circuit pack.
To upgrade LNW7 28DS1PM to high-density LNW801 56DS1/E1 (service affecting), Procedure 12-28: Upgrade low-speed LNW7 to LNW801 circuit packs.
Important!
The system does not support mixing standard density and high-density circuit packs in the same function unit. Both slots of a function unit must be equipped with the same circuit pack type.
Important!
An upgrade from an LNW6/7 28DS1 circuit pack to an LNW8 56DS1/E1 circuit pack is denied if either of the following situations occur:
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Available VT resources are not sufficient to support the cross-connections to the LNW8 56DS1/E1 circuit pack.
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The upgrade would result in a source and destination conflict of VT bandwidth. Refer to the Alcatel-Lucent 1665 Data Multiplexer Extend (DMXtend) Applications and Planning Guide, 365-372-324 for more information about the assignment of VT bandwidth.
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One or more of the LNW6 or LNW7 tributaries is cross-connected only as the source of a cross-connection
Important!
If an LNW19 48DS3/EC1 circuit pack and an LNW19B 48DS3/EC1 circuit pack are installed in the same function unit, then both circuit packs function as an LNW19 48DS3/EC1 circuit pack. Therefore, the LNW19B 48DS3/EC1 circuit pack would not support DS3 terminal loopbacks.
Privilege level
You must log in as either a Privileged or General user to complete this procedure.
Required equipment
The following equipment is required to perform this procedure:
Release 1.1 or later software is required to support the high-density LNW8 56DS1/E1 circuit packs.
Release 2.0 or later software is required to support the high-density LNW19 48DS3/EC1 circuit packs.
Release 3.0 or later software is required to support the high-density LNW19B 48DS3/EC1 circuit packs.
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NOTICE Equipment damage |
Rocking circuit packs back and forth when removing or installing them can damage circuit pack and/or shelf connectors.
Do not rock circuit packs back and forth when removing or installing them. Carefully slide circuit packs into or out of the shelf slot.
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NOTICE Service-disruption hazard |
Removing or installing circuit packs during a System Reset can cause system errors.
Do not remove or install a circuit pack during a System Reset. If a System Reset occurs, wait until the System Reset is complete, then remove or install the circuit pack.
Before you begin
Prior to performing this procedure:
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Refer to Electrostatic discharge in Chapter 1, Safety.
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Obtain the work instructions for this procedure, and verify that the affected circuit pack/protection group AIDs are specified.
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Verify that the circuit packs to be upgraded are protected. Both function unit slots (D, G)1 and (D, G)2 must be equipped before performing this procedure. If necessary, install the companion circuit pack. Refer to Procedure 4-9: Install DS1/E1 circuit packs or Procedure 4-7: Install DS3/EC1 circuit packs.
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Verify that the DS1 and/or DS3 cables necessary to support the high-density circuit packs have already been installed. Refer to the Alcatel-Lucent 1665 Data Multiplexer Extend (DMXtend) Installation Manual, 365-372-327, for cabling information.
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Review the applicable Alcatel-Lucent 1665 Data Multiplexer Extend (DMXtend) Software Release Description for any detailed procedures or cautions that may apply to this upgrade procedure.
Steps
Complete the following steps to upgrade the in-service low-speed electrical circuit packs in a function unit.
1 |
Click the Alarm List button in the top right corner of the System View to view the NE Alarm List and verify that no alarms are present. Refer to the appropriate trouble-clearing procedures to clear all existing alarms before continuing with this procedure. Reference: Alcatel-Lucent 1665 Data Multiplexer Extend (DMXtend) Alarm Messages and Trouble Clearing Guide, 365-372-326 | ||||||
2 |
To verify that no loopbacks, protection switch lockouts, or protection switches are present, select View → Rolling Events. Under the line reading RTRV-COND-ALL determine if any loopbacks, protection switch lockouts, or protection switches are displayed. Remove all existing loopbacks, protection switch lockouts, or protection switches before continuing with this procedure. Reference: Alcatel-Lucent 1665 Data Multiplexer Extend (DMXtend) Alarm Messages and Trouble Clearing Guide, 365-372-326 | ||||||
3 |
Select Fault → Analysis → Test Access to access the Test Access Wizard and verify that no test access sessions exist. If required, select Fault → Analysis → Test Access to access the Test Access Wizard and delete all existing test access sessions. Reference: | ||||||
4 |
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5 |
Important! When the standard density DS1 circuit pack in slot (D, G) 2 is removed, transmission hits occur causing the system to report the inc. (from DSX) DS1 sig. failed condition. Depending on the provisioned value of the DS1 port Signal Failure Threshold, it may take up to 20 minutes for the inc. (from DSX) DS1 sig. failed condition to automatically clear. It is recommended that the DS1 port Signal Failure Threshold be provisioned 10E-3 to minimize the time it takes the system to clear the condition. The original DS1 port Signal Failure Threshold can be reprovisioned when the upgrade is complete. From System View select Reports → Equipment Lists → Port. Click on the DS1 circuit pack in slot (D, G) 2 and click Select. Record the Signal Failure Threshold of each DS1 port. If required, provision the Signal Failure Threshold of the DS1 ports to 10E-3. Reference: Procedure 4-10: Provision DS1/E1 circuit packs/ports for service | ||||||
6 |
Important! Local operating procedures for removing a circuit pack may vary. One method is to simply remove the circuit pack. Another method is to verify the circuit pack active/standby status, perform manual switches if the circuit pack is active, and then remove the circuit pack. Determine the local operating procedures for removing a circuit pack before removing the circuit pack in slot (D, G) 1.
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7 |
Important! The circuit pack in slot (D, G) 1 must be replaced first. Perform this step to determine if the circuit pack in slot (D, G) 1 is active for transmission. From the System View select Reports → Status Lists → Pack. Click on Shelf and Select. Observe the value of the Switch State parameter for the required fn-d-1 or growth-1 circuit pack (according to the work instructions). If the Switch State parameter is active, the circuit pack in slot (D, G) 1 is the active circuit pack for transmission. Click Close. | ||||||
8 |
Important! This step is optional. If the circuit pack in slot (D, G) 1 is the active circuit pack for transmission, then a manual switch must be performed before replacing the circuit pack. If the circuit pack in slot (D, G) 2 is the active circuit pack for transmission, do not perform this step. To perform an optional manual transmission switch, select Fault → Protection Switch. Click on the required 1+1 Equip protection group (according to the work instructions) and Select. Select the Manual (Normal) Switch Type and click Apply. Result: A dialog box appears asking you to confirm executing this command. Click Yes. Then click Close. | ||||||
9 |
Replace the circuit pack in slot (D, G) 1 with the replacement high-density circuit pack. Result: If a circuit pack firmware update is required, the system reports the Waiting for Download and Install Program IP conditions when the replacement high-density circuit pack is inserted in the slot. After the circuit pack firmware update is complete, the system reports an unexpected CP type alarm for slot (D, G) 1. If a circuit pack firmware update is not required, the system reports an unexpected CP type alarm for slot (D, G) 1 when the replacement high-density circuit pack is inserted. | ||||||
10 |
Important! The UPD/INIT button does not work during this upgrade. From the System View select Configuration → Update System → Update All. The service-affecting LNW7 to LNW801 upgrade completes only when the user selects the FRCD mode. Result: A dialog box appears asking you to confirm executing this command. Click Yes. The replacement high-density circuit pack in slot (D, G) 1 is autoprovisioned, and the system performs an automatic circuit pack protection switch. Traffic is automatically switched from the circuit pack in slot (D, G) 2 to the circuit pack in slot (D, G) 1. If upgrading DS1 circuit packs, transmission hits (up to 130 ms) occur as the automatic switches are performed. All traffic is now active on the circuit pack in slot (D, G) 1. The unexpected CP type alarm for slot (D, G) 1 clears, and the system reports a CP not allowed - eqpt alarm for slot (D, G) 2. | ||||||
11 |
Important! When a standard density LNW6 28DS1 or LNW7 28DS1PM circuit pack is removed from slot (D, G) 2, transmission hits occur causing the system to report and automatically clear the inc. (from DSX) DS1 sig. failed condition. Replace the other circuit pack in the companion slot (D, G) 2 with the replacement high-density circuit pack. Result: The replacement high-density circuit pack in slot (D, G) 2 is autoprovisioned and all alarms clear. | ||||||
12 |
From the System View select View → Refresh System View to update the graphical circuit pack and port information currently displayed for the network element. Result: A warning message appears asking you to confirm executing this command. Click Yes. The graphical circuit pack and port information displayed in the System View is updated to show the replacement high-density circuit packs and additional ports. | ||||||
13 |
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14 |
If required, provision the Signal Failure Threshold of the DS1 ports to the original values recorded in Step 5. Reference: Procedure 4-10: Provision DS1/E1 circuit packs/ports for service | ||||||
15 |
This completes the low-speed electrical circuit pack upgrade in a function unit. If the low-speed electrical circuit packs in other function units are to be upgraded at this node, repeat Step 4 through Step 14; otherwise, continue with the next step. | ||||||
16 |
Important! It is recommended that the network element database be backed up to a remote OS (for example, OMS) after an upgrade. This creates a current backup copy that includes the replacement circuit packs. The remote OS could use this backup copy to restore the network element database in the event of a catastrophic failure. Attempts to restore the network element database using a backup copy created prior to the upgrade may result in circuit pack failures. Back up the network element database using the Configuration → Software → Remote Backup command. Reference: End of steps |