U-NODE NEC

TRANSMISI BACKBONE Versi 1.0

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Transmission Team SMP SDH U-NODE WBM No. SOP/SMP Transmission Halaman

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DAFTAR ISI

I. BACK UP AND RESTORATION 1.1 SAVE/RESTORE CONFIGURATION DATA

1.1.1 Restore the Factory Default Settings

1.1.1.1 Precautions

1.1.1.2 Procedure: Restore Factory Default by Cold Start

1.1.1.3 Procedure: Restore Factory Default by Operating CID

1.2 RESTORE BACKUP DATA IN MSCB FLASH MEMORY

1.2.1 Procedure: Reset Package CPU

II HARDWARE MAINTENANCE

2.1 LASER SHUTDOWN 2.1.1 Descriptions

2.1.1.1 Automatic Laser Shutdown (ALS) 2.1.1.2 Forced Shutdown 2.1.1.3 ALS Manual Release

2.1.2 Apparatus 2.1.3 Procedure: Execute Forced Laser Shutdown 2.1.4 Procedure: Execute Manual Laser Release

2.2 FAN 2.2.1 Precautions 2.2.2 Task Flow 2.2.3 Apparatus 2.2.4 Procedure: Replace Fan

2.3 AIR FILTER 2.3.1 Task Flow 2.3.2 Apparatus 2.3.3 Procedure: Replace Air Filter

III TRAFFIC MANAGEMENT 3.1 TIMING SOURCE SELECTION


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3.1.1 Timing Reference Switch Operation

3.1.1.1 Requirements

3.1.1.2 Parameters

3.1.1.3 Procedure: Operate Timing Source Selection

3.2 Release Wait-to-Restore Condition

3.2.1 Procedure: Release WTR Condition

3.3. TRAFFIC MAINTENANCE

3.3.1 LOOPBACK LINE FACILITY MAINTENANCE

3.3.2 Facility Loopback

3.3.2.1 For STMn Optical Facilities

3.3.2.2 For E12/E31/E32 Facility

3.3.2.3 Procedure: Perform Facility Loopback

3.3.2.4 Procedure: Release Facility Loopback

3.3.3 Terminal Loopback

3.3.3.1 For STMn Optical Facility


3.3.3.3 Procedure: Perform Terminal Loopback

3.3.3.4 Procedure: Release Terminal Loopback

3.3.4 Remote Terminal Loopback


3.3.4.2 Procedure: Perform Remote Terminal Loopback

3.3.4.3 Procedure: Release Remote Terminal Loopback

3.4 LINE PROTECTION LINE FACILITY MAINTENANCE

3.4.1 Linear Switching Protection

3.4.1.1 Precaution

3.4.1.2 Switching Operation for LINE

3.4.2 Ring Switching Protection

3.4.2.1 Precaution

3.4.2.2 Switching Operation for MS2FS


3.4.2.4 Procedure: Perform Line Protection Switching

3.4.2.5 Procedure: Release Line Protection Switching


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3.4.3 Lockout Mode

3.4.3.1 Procedure: Specify/Release Lockout Mode

3.5 PROTECTION EXERCISE PROTECTION MAINTENANCE

3.5.1 Procedure: Perform Protection Switching Exercise

3.6 PATH PROTECTION SWITCHING

3.6.1 PPS Operation

3.6.1.1 Procedure: Perform Path Protection Selection

3.6.2 Lockout Mode


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I. BACK UP AND RESTORATION

1.1 SAVE/RESTORE CONFIGURATION DATA 1.1.1 Restore the Factory Default Settings The current data can be restored to the factory default parameter values and configurations in MSCB

package by the Cold Start, or the CID operation. Restoring the factory default to ACT memory

specifies a node to the default setups.

1.1.1.1 Precautions Performing the configuration data restoration of the MSCB package will log off any session to

the target NE.

This operation (data restoration) is not available for remote NE.

1.1.1.2 Procedure: Restore Factory Default by Cold Start

1) Press and hold the RESET button and COLD button on the MSCB package at the same time. Keep pressing them. LEDs on the MSCB package go off.

2) Release the RESET button. (Keep pressing the COLD button.) 3) When the LED on the MSCB package lights up, release the COLD button. 4) Wait until all the LEDs on the MSCB package go off. (LEDs on the MSCB package stay on

while reading data.) However, if any alarm is detected within the NE, the LED(s)

corresponding to the detected alarm severity level will not go off.

This step is the end of the procedure.


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1.1.1.3 Procedure: Restore Factory Default by Operating CID

1) Start up CID, and log in to the target NE locally.

2) Click Operation on the menu bar of the CID main window. The Operation menu appears.

3) Select Configuration Data Copy Restore from the menu. The Memory Restore dialog box appears.

4) Select [DEF > ACT] by clicking its radio button. To save the current configuration data before restoration, click the check box.

5) Click the Apply button on the dialog box. The confirmation box appears. 6) Click the Yes button on the confirmation box. A warning message box appears.

7) Confirm if this restoration is performed at the right time, then click the OK button. The restoration process starts.


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8) When the process is completed, the following message appears to inform that your access is

now being logged off. Click the OK button to end the performance, and to log off.


1.1.2 Restore Backup Data in MSCB Flash Memory The current data can be restored to the backup data stored in the flash memory (SUB) of MSCB

package. This performance can be done by operating the CID.


the target NE.


1.1.2.2 Procedure: Restore Backup Data in MSCB




4) Select [Flash Memory > ACT] by clicking its radio button.


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7) Confirm if this restoration is performed at the right time, then click the OK button. The restoration process starts.





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1.1.3 Restore Users Backup Data The current data can be restored to the users backup data stored in the memory card of MSCB

package (MEMB). This performance can be done by operating the CID.


the target NE.


1.1.3.2 Procedure: Restore Users Backup Data in MEM Card




4) Select [MEMCARD > ACT] by clicking its radio button.



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7) Confirm if this restoration is performed at the right time, then click the OK button.

The restoration process starts.




1.1.4 Back Up System Configuration Perform the procedure here to back up the provisioned information of the U-Node WBM:

System of WBM shelf will be backed up into the flash memory (SUB) in MSCB package.

NOTE: While in the backup process, you cannot make a session to the system via NMS or

another CID.

1.1.4.1 Procedure: Back Up the System Configuration




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3) Select Configuration Data Copy Backup from the menu. The confirmation message

appears.

4) Click the Yes button on the message box to proceed.

NOTE: Clicking the MEM Info button displays the Memory Information dialog box.

While in the process, the following indication box appears.

When completed, the box disappears.


1.1.5 Copy System Configuration to Memory Card The current data can be copied to the memory card in MSCB package as the users backup memory.

The system configuration of WBM shelf will be copied to the memory card in MSCB.

NOTE: While in the backup process, you cannot access the system by CID.

1.1.5.1 Procedure: Back Up the System Configuration



3) Select Configuration Data Copy Copy from the menu. The Memory Copy dialog box appears.

4) Click the Apply button on the dialog box. The confirmation box appears.


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NOTE: Clicking the MEM Info button displays the Memory Information dialog box.

5) Click the Yes button on the confirmation box to proceed.


6) When completed, click the Close button on the Memory Copy dialog box. This step is the end of the procedure.

1.2 RESET PACKAGE CPU (INITIALIZE PACKAGES) Performing the following procedure restarts some specific packages in an NE. More than one package

at a time can be specified for this operation. The following packages can be initialized:

MSCB package: has CPUs of SCB (SCBCPU) and of AGENT (AGCPU).

(This package can also be restarted by pressing the RESET button on its faceplate.) SSCB package: has one CPU; SWBCPU

OHC package: has up to three CPUs; OHCPU(s)

If a package replacement takes place, its CPU(s) is/are also reset.


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1.2.1 Procedure: Reset Package CPU 1) Start up CID, and log in to the target NE locally.

2) Click Operation on the menu bar of the CID main window. The Operation menu appears. 3) Select CPU Reset from the menu. The CPU Reset dialog box appears. 4) Select the target CPU by the AID, or click the check box to select all available CPUs in the

equipment.

5) Click the Apply button. 6) When completed, click the Close button on the dialog box.



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II HARDWARE MAINTENANCE 2.1 LASER SHUTDOWN The U-Node WBM has automatic/forced laser shutdown function to protect eyes of maintenance

personnel. The ALS mode functions according to the setup specified by the procedure in the

Parameter Changes section.

2.1.1 Descriptions 2.1.1.1 Automatic Laser Shutdown (ALS) The Automatic Laser Shutdown (ALS) is enabled automatically if the incoming signal is lost for a

certain period of time. While in the ALS mode, where ALS Restart Mode is specified to AUTO, the U-Node WBM will repeat transmitting signals periodically to check whether the traffic problem

occurred at the far-end NE is cleared. After receiving the normal signals from the far-end NE, ALS

mode is disabled and the local NE starts transmitting signals normally. The length of periodical signal

transmission interval can be customized. The ALS function can be disabled if not necessary.

2.1.1.2 Forced Shutdown The Forced Shutdown is enabled by the maintenance personnel via CID to stop transmitting optical

signals regardless of the ALS mode. When the Forced Shutdown is executed to a facility, the optical

output signals are stopped regardless of whether the NE is receiving an incoming signal. This function

is available only when a target facility is in IS (In Service) state. When the service state of the facility

is changed to OOS (Out of Service), then is back into the IS, the facility starts transmitting signals

again.

2.1.1.3 ALS Manual Release ALS Manual Release is the function to apply the first optical input to restart transmitting signals by a

maintenance personnels operation. For the output duration, Long (90 seconds) or Short (2 seconds or 9 seconds, according to the Parameters for ALS specified by the Parameter Changes procedure) is available.

2.1.2 Apparatus NEC Craft Interface Device (CID)


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2.1.3 Procedure: Execute Forced Laser Shutdown

1) Start up CID, and log in to the target NE.

2) Click Maintenance on the menu bar of the CID main window. The Maintenance menu appears.

3) Select Laser Shutdown from the menu. The Laser Shutdown dialog box(1) appears. 4) Click on the target facility. The Laser Shutdown dialog box(2) for the selected facility

appears.

5) Click in the Forced Shutdown field, and select ON from the pull-down menu.


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6) Click the Apply button on the Laser Shutdown dialog box(2). The forced shutdown is

executed. While in the process, the following indication box appears.

7) When completed, the indication box disappears. Click the Close button on the Laser

Shutdown dialog box(1). 8) Click the Close button on the Laser Shutdown dialog box(1).

NOTE: To disable the Forced Shutdown status, perform the procedure above, and select OFF in

step 5. This step is the end of the procedure.

2.1.4 Procedure: Execute Manual Laser Release

1) Start up CID, and log in to the target NE.

2) Click Maintenance on the menu bar of the CID main window. The Maintenance menu appears.

3) Select Laser Shutdown from the menu. The Laser Shutdown dialog box(1) appears. 4) Click on the target facility. The Laser Shutdown dialog box(2) for the selected facility

appears.


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5) Click the Release ALS tab.

6) Click in the ALS Manual Release field, and select Short or Long for the output duration. 7) Click the Apply button on the Laser Shutdown dialog box(2). The manual laser release is

executed.

8) When completed, click the Close button on the Laser Shutdown dialog box(2). 9) Click the Close button on the Laser Shutdown dialog box(1).

If the laser shutdown status is not cleared, verify if an optical input is not lost, then repeat the

procedure.



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2.2 FAN

2.2.1 Precautions If a fan fails, the fan should be replaced immediately in order to prevent the temperature within the

shelf from going up. Also, for the same reason, replacement should take no longer than 5 minutes.

2.2.2 Task Flow Replace a fan

2.2.3 Apparatus A new Fan package for replacement:

E32-145-M9992-0A10; must be unpacked and ready to be set

CAUTION! Fan package provided for U-Node BBM (E32-145-M9992-0A01) cannot be mounted on

UNode WBM.

Antistatic wrist strap Antistatic bag or container


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2.2.4 Procedure: Replace Fan

1) Wear the wrist strap, and connect the other end to the ESD terminal on the WBM shelf. 2) Confirm that a new fan has been unpacked, and ready to be set.

The following Steps 3 thru 8 should not take no longer than 5 minutes.

Removing Fan:

3) Loosen a thumbscrew on the front of the fan to be replaced.

4) Pull the fan out by holding the grip on its front, and disengage the Fan package from the

backplane.

CAUTION: Do not grab the faceplate. A Fan package contains two fans;

one of these may still be rotating at high speed.

5) Wait for about 20 seconds, and confirm that the fan(s) are completely stopped.

6) Take the package off from the shelf.

7) Place the removed fan in the antistatic bag or container.

Installing a New Fan:

8) Confirm that a Fan package is appropriate type.

9) Pull the thumbscrew upward to flap the stopper open.

10) Install the new fan; push it further until the rear side is engaged to the shelf backplane.

11) Adjust the screw hole on the fan to the thumbscrew, and fasten it.

12) Verify that the FAIL lamp is not lit on the fan. 13) Disconnect the wrist strap.



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2.3 AIR FILTER Filters do not have any screws to attach themselves to the shelf.

2.3.1 Task Flow Replace a filter.

2.3.2 Apparatus A new filter for replacement Antistatic wrist strap

2.3.3 Procedure: Replace Air Filter

1) Wear the wrist strap, and connect the other end to the ESD terminal on the WBM shelf.

Removing Air Filter

2) Pull the air filter out by holding its grips.

Installing a New Air Filter

3) Insert the new air filter, and push it further until it stops.

4) Disconnect the wrist strap.



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III MANAGEMENT TRAFFIC 3.1 TIMING SOURCE SELECTION 3.1.1 Timing Reference Switch Operation Timing reference assigned to an NE can be switched, or be locked via CID. If the facility selected for

the target timing reference configures protection switch group, this operation is executed to the switch

group.

3.1.1.1 Requirements When the target timing reference has the following assignments, Timing Source Selection

operation is not available:

Operation Mode 1 (EXTCLK OUT1/2): FIX PL: NSEL Source Entry: NO ENT

The following operations are available for each reference assigned for Equipment, EXTOUT1, and EXTOUT2:

3.1.1.2 Parameters


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3.1.1.3 Procedure: Operate Timing Source Selection

1. Start up the CID, and log in to the target NE. 2. Click Maintenance on the menu bar of the CID main window. The Maintenance menu appears.

3. Select Timing Source Selection from the menu. The Timing Source Selection dialog box appears.

4. Click a tab to display the target timing references: reference tabs

5. Check the Switching Status of the target timing reference to see if it is operational.


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6. In the Switch Mode [Operation], select (a) operation(s):

7. Click the Apply button to execute operation. While in the process, the following indicator appears:

8. When completed, click the Close button. This step is the end of the procedure.

3.2 Release Wait-to-Restore Condition

To make an immediate effect in the revertive mode, the duration specified for WTR (wait-

torestore)


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can be omitted while in the WTR condition (after the WTR time count starts).

3.2.1 Procedure: Release WTR Condition

1. Start up the CID, and log in to the target NE. 2. Click Maintenance on the menu bar of the CID main window. The Maintenance

menu appears.

3. Select Timing Source Selection from the menu. The Timing Source Selection dialog box appears.

4. Click the Release WTR tab:

5. Release WTR condition by selecting one of the following:

Click in the Release WTR field of the target timing reference. Click All Release check box to release all WTR conditions at a time.


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6. Click the Apply button. While in the process, the following indicator appears:

7. When completed, click the Close button.


3.3. TRAFFIC MAINTENANCE This section provides the maintenance information and procedures related to traffics.

Traffic maintenance should be carried out by an maintenance personnel to assure or inspect the quality

of the traffic.

The tasks provided in this section are not arranged in any specific order.

3.3.1 LOOPBACK LINE FACILITY MAINTENANCE

Loopback function allows fault isolation and pre-service operation practice. Performing loopback

interrupts the flow of traffic, and changes the normal transmission. Therefore, the use of loopbacks as

routine practice is not recommended.

When the loopback is executed, the system generates an AIS (alarm indication signal), and sends it to

the far-end NE. Also, all IPPM parameters will be indicated as INVALID.

Once the loopback is initiated, the MNT lamp (LED) on the package lights up to indicate that the

loopback is in operation. The loopback operation can be initiated STM1E package, E12/ E31/E32

package, and other optical facilities such as STM-16.


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See the following for other features of the loopback:

The loopback can be executed on every path. The two different loopbacks cannot be executed to the same facility at a time. Alarms in the path layer are masked during the loopback operation.

3.3.2 Facility Loopback 3.3.2.1 For STMn Optical Facilities The performance of this facility loopback is that the outgoing signal that is originated at an

optical facility of a local NE is looped back at the local NE before being scrambled.

3.3.2.2 For E12/E31/E32 Facility The E12, E31, or E32 facility loopback is originated and enabled at the near-end (local node), and E12

AIS (on E12 facility), E31 AIS (on E31 facility) or E32 AIS (on E32 facility) is inserted toward the

remote node. This type of loopback isolates failure(s).

3.3.2.3 Procedure: Perform Facility Loopback


menu appears.

3. Select Loopback from the menu. Loopback dialog box appears. 4. Confirm that the SDH Facility or PDH Facility tab is selected. Then click in the

Loopback Operation field of the target facility, and select Facility Loopback.


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5. Click the Apply button on the dialog box. The loopback is executed to the selected

facility. While in the process, the following message box appears.

When the box disappears, the loopback setup is completed.

6. Click the Close button on the dialog box.


3.3.2.4 Procedure: Release Facility Loopback


menu appears.


Loopback Operation field of the target facility, and select Release from the pulldown list.


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5. Click the Apply button on the dialog box to release. While in the process, the Following message box appears.

When the box disappears, the loopback setup is released.




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3.3.3 Terminal Loopback

3.3.3.1 For STMn Optical Facility An outgoing signal that is originated at an optical facility of the local NE is looped back at a far-end

NE.

3.3.3.2 For E12/E31/E32 Facility Terminal loopback is originated at an E12/E31/E32 facility of a near-end node (local node), which is

crossconnected to an E12/E31/E32 facility of a remote node. At the remote node, loopback is enabled,

and E12 AIS (on E12 facility) is inserted toward the E12 line, E31 (on E31 facility) is to E31 line, and

E32 (on E32 facility) is to E32 line.

3.3.3.3 Procedure: Perform Terminal Loopback

1. Start up the CID, and log in to the target NE. 2. Click Maintenance on the menu bar of the CID main window. The Maintenance menu

appears.


Loopback Operation field of the target facility, and select Terminal Loopback.


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5. Click the Apply button on the dialog box. The loopback is executed to the selected



6. Click the Close button on the dialog box. This step is the end of the procedure.

3.3.3.4 Procedure: Release Terminal Loopback


appears.


Loopback Operation field of the target facility, and select Release from the pulldown list.


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5. Click the Apply button on the dialog box to release. While in the process, the

following message box appears.




3.3.4 Remote Terminal Loopback 3.3.4.1 For E12/E31/E32 Facility Remote terminal loopback is originated at an E12/E31/E32 facility of a far-end node (remote node),

which is crossconnected to an E12/E31/E32 facility of a local node. At the remote node, loopback is

enabled, and E12 AIS (on E12 facility) is inserted toward E12 line, E31 AIS (on E31 facility) is to E31

line and E32 AIS (on E32 facility) is to E32 line.

3.3.4.2 Procedure: Perform Remote Terminal Loopback


menu appears.

3. Select Loopback from the menu. Loopback dialog box appears. 4. Confirm that the PDH Facility tab is selected. Then click in the Loopback

Operation field of the target facility, and select Remote Terminal Loopback.


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5. Click the Apply button on the dialog box. The loopback is executed





3.3.4.3 Procedure: Release Remote Terminal Loopback


appears.

3. Select Loopback from the menu. The Loopback dialog box appears. 4. Confirm that the PDH Facility tab is selected. Then click in the Loopback Operation

field of the target facility, and select Release from the pull-down list.


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5. Click the Apply button on the dialog box to release. While in the process, the following message box appears.




3.4 LINE PROTECTION LINE FACILITY MAINTENANCE The protection switching function allows the user to execute the manual protection switching for entire

switch groups in a local NE.

The following shows the switch groups and their applicable switching protection types:

LINES: Linear Protection MS2FS: Ring Protection MS4FS: Ring Protection, Span Protection

3.4.1 Linear Switching Protection 3.4.1.1 Precaution

For the switch group of linear bidirectional, the same switching operation must be executed to the

LINES of the opposing node. If the opposing node runs non-NEC equipment, still the same type of switching operation must be executed.


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3.4.1.2 Switching Operation for LINE

Line switching protection has the Lockout mode for each switch group. In this mode, any

type of switch operation is disabled.

3.4.2 Ring Switching Protection 3.4.2.1 Precaution Ring/Span switching operations (listed below) must be executed in conjunction with the opposing

LINE of the opposing node. For example, to execute the ring switch to LINE1 at a node, the same switching operation must be executed to LINE2 at the opposing node.



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Line switching protection has the Lockout mode for each switch group. In this mode, any

type of switch operation is disabled.


Line switching protection has the Lockout mode for each switch group. In this mode, any type of

switch operation is disabled.


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3.4.2.4 Procedure: Perform Line Protection Switching

1. Start up the CID, and log in to the target NE.

2. Click Maintenance on the menu bar of the CID main window. The Maintenance menu appears.

3. Select Protection Switching Package/Line from the menu. The Protection Switching dialog box appears.

4. Click on the target facility. The selection button appears.


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5. Click the button. The Protection Switching Line/BLSR dialog box for the selected protection group appears.

6. Click in the Operation field to display the pull-down list, and select a switching operation type:

7. Click the Apply button on the dialog box. The confirmation box appears. 8. Click the Yes button. The protection switch is executed.


When the box disappears, the switching operation is completed.


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9. Click the Close button on the Protection Switching Line/BLSR dialog box

10. Click the Close button on the Protection Switching dialog box.

This step is the end of the procedure

3.4.2.5 Procedure: Release Line Protection Switching

1. Start up the CID, and log in to the target NE.

2. Click Maintenance on the menu bar of the CID main window. The Maintenance menu appears.




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6. Click in the Operation field to display the pull-down list, and select Release (selected operation

7. Click the Apply button on the dialog box. While in the process, the following indication box appears.

When completed, the box disappears.

8. Click the Close button on the Protection Switching Line/BLSR dialog box. 9. Click the Close button on the Protection Switching dialog box.



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3.4.3 Lockout Mode The Protection Switching dialog box also has a selection to hold the selected switch groups status: Lockout. Specifying Lockout inhibits the selected switch group to carry out any type of protection switches. This mode should be used for the maintenance purpose, such as a package replacement, in

order to suspend unexpected switching operations.



appears.




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6. Click the Lockout check box:

To specify Lockout mode, leave a tick in the check box. To release from the Lockout mode, remove a tick from the check box.

7. Click the Apply button. The confirmation box appears.

8. Click the Yes button. The Lockout is executed. While in the process, an indication box appears.

When the box disappears, specifying/releasing Lockout mode is completed.


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9. Click the Close button on the Protection Switching Line/BLSR dialog box. 10. Click the Close button on the Protection Switching dialog box.


3.5 PROTECTION EXERCISE PROTECTION MAINTENANCE The protection switch exercise is a test to make sure that the protection switching functions properly.

This test does not carry out the actual switching operation. The following protection exercises are

available:

LINES (Linear switch) MS2FS (Ring switch) MS4FS (Ring switch, Span switch)

3.5.1 Procedure: Perform Protection Switching Exercise 1. Start up CID, and log in to the target NE. 2. Click Maintenance on the menu bar of the CID main window. The Maintenance menu

appears.

3. Select Exercise Protection Switching from the menu. The Exercise Protection Switching dialog box appears.

4. Select a switching group type to be exercised by clicking its tab.


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NOTE: For the tab of ring protection switch group, either MS2FS or MS4SF is

displayed according to the configured ring protection.

5. Click (a) check box(es) to select (a) switch group(s). More than one groups can be selected. To select all groups, click the Exercise All check box.

6. Click the Apply button to execute the operation. 7. When completed, click the Close button.


3.6 PATH PROTECTION SWITCHING

3.6.1 PPS Operation Path protection switching allows the user to manually select (switch) the use of paths that has been

configured to the higher order PPS path or lower order PPS path; refer to Set Up Crossconnect in the

Provisioning manual for PPS configuration. The path protection selection has the following operation

types:


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Path protection selection has the Lockout mode for each facility. In this mode, any type of switch

(selection) operation is disabled.

3.6.1.1 Procedure: Perform Path Protection Selection


appears.

3. Select Protection Switching Path from the menu. The Protection Switching Path Selection dialog box appears.

4. Perform the following depending on the target path facility: For AU Facility:

(i) Click the Higher Order Path tab on the dialog box. (ii) Select an AU facility in the list.


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(iii) Click the OK button. The Protection Switching Path dialog box appears.

For PDHTU/SDHTU Facility: (i) Click the Lower Order Path tab on the dialog box. (ii) Select a PDHTU or SDHTU facility in the list.


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(iii) Click the OK button. The Protection Switching Path dialog boxappears.


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6. Click the Apply button. The confirmation box appears.


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7. Click the Yes button. The selected operation is executed.

During the process, the following indication box appears.

When the box disappears, the switching operation is completed.

8. Click the Close button in the Protection Switching Path dialog box.

9. Click the Close button in the Protection Switching Path Selection dialog box.


3.6.2 Lockout Mode The Protection Switching Path dialog box also has a selection to hold the selected facilitys status: Lockout. Specifying Lockout inhibits the selected facility to carry out any type of protection switches. This mode should be used for the maintenance purpose in order to suspend unexpected

switching operation.


1. Start up the CID, and log in to the target NE 2. Click Maintenance on the menu bar of the CID main window. The Maintenance menu

appears.

3. Select Protection Switching Path from the menu. The Protection Switching Path Selection dialog box appears.


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4. Perform the following depending on the target path facility:

For AU Facility: (i) Click the Higher Order Path tab on the dialog box. (ii) Select an AU facility in the list.


For PDHTU/SDHTU Facility:

(i) Click the Lower Order Path tab on the dialog box. (ii) Select a PDHTU or SDHTU facility in the list.


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5. Click the Lockout check box:


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To specify Lockout mode, leave a tick in the check box. To release from the Lockout mode, remove a tick from the check box.

6. Click the Apply button. The confirmation box appears. 7. Click the Yes button. The selected operation (Lockout or release Lockout) is executed.

During the process, the following indication box appears.

When the indication box disappears, the operation is completed.

8. Click the Close button in the Protection Switching Path dialog box. 9. Click the Close button in the Protection Switching Path Selection dialog box.


Documents

U-NODE NEC