01-04 hop commissioning

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4 HOP CommissioningAbout This Chapter

This chapterprovides the items for commissioning a single HOP and describes how to carry out

each commissioning item.

4.1 HOP Commissioning Items

HOP commissioning involves the commissioning of the radio link upon its establishment after

the NE commissioning for the two radio NEs at both ends of the link is complete. It is

recommended that you test the commissioning items listed in the following table depending on

the actual configuration of the equipment.

4.2 Aligning the Antenna

Aligning the antenna is the most important activity in the hop commissioning, and its result has

a direct effect on the performance of the radio link.

4.3 Testing the ECC

The ECC is used to carry the network management (NM) information. By testing the ECC, you

can ensure that the radio link transmits the ECC normally.

4.4 Testing the E1 Service

By testing the E1 service, you can check if the E1 service is available between stations.

4.5 Testing the Ethernet Service

By testing the Ethernet service, you can check if the Ethernet service is available between

stations.

4.6 Testing the WS Service

By testing the WS service, you can check if the WS service is available between stations.

4.7 Testing the Orderwire Phone

When the station is installed with the orderwire phone, by testing the orderwire phone, you can

check if the orderwire phone functions normally.

4.8 Testing the IF 1+1 Switching

When the OptiX RTN 600 is configured with the IF 1+1 protection, by testing the IF 1+1

switching, you can check if the switching is normal.

4.9 Testing the SNCP Switching

When the OptiX RTN 600 is configured with the SNCP, by testing the SNCP switching, youcan check if the switching is normal.

OptiX RTN 600 Radio Transmission System

Quick Installation and Commissioning Guide 4 HOP Commissioning

Issue 04 (2007-07-30) Huawei Technologies Proprietary 4-1


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4.10 Testing the Linear MSP Switching

When the OptiX RTN 600 is configured with the linear MSP, by testing the linear MSP


4.11 Testing the 24-Hour BER

By testing the 24-hour BER, you can check if the equipment can transmit services stably in along term.

4 HOP Commissioning


Quick Installation and Commissioning Guide

4-2 Huawei Technologies Proprietary Issue 04 (2007-07-30)


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4.1 HOP Commissioning Items

HOP commissioning involves the commissioning of the radio link upon its establishment afterthe NE commissioning for the two radio NEs at both ends of the link is complete. It is

recommended that you test the commissioning items listed in the following table depending on

the actual configuration of the equipment.

Table 4-1 HOP commissioning items

Item Optional/ Required

Reference Remarks

Aligning the

antenna

Required 4.2 -

Testing the ECC Required 4.3 -

Testing the E1

service

Required 4.4 Applicable if the E1 service is

available between stations.

Testing the

Ethernet service

Required 4.5 Applicable if the Ethernet service is


Testing the WS

service

Required 4.6 Applicable if the WS service is


Testing the

orderwire phone

Required 4.7 Applicable if the orderwire phone is


Testing the IF 1

+1 switching

Required 4.8 Applicable if the 1+1 HSB/FD/SD

is configured.

Testing the

SNCP

switching

Required 4.9 Applicable if the SNCP is

configured.

Testing the

linear MSP

switching

Required 4.10 Applicable if the linear MSP is

configured.

Testing the 24-

hour BER

Required 4.11 -

4.2 Aligning the Antenna

Aligning the antenna is the most important activity in the hop commissioning, and its result has

a direct effect on the performance of the radio link.

Prerequisite

l The NE commissioning of the radio equipment at both ends of the radio link must be

complete.





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l The weather should be suitable for outdoor work. There should be no rain, snow, or fog

between stations.

l The on-site conditions must meet the requirements for the antenna to operate at a high

altitude and the personnel required to commission the antenna must be trained to work at

high altitudes.l The ATPC function must be disabled.

Precautions

If the radio link is configured with 1+1 protection and one antenna is used at one end, turn off

the power supplies of the standby ODUs at both ends before aligning the antenna. After aligning

the antenna is complete, turn on the power supplies of the standby ODUs at both ends again.

If the radio link is configured with 1+1 SD and two antennas are used at one end, align the

antenna as follows:

1. After turning off the power supplies of the standby ODUs at both ends, align the main

antennas at both ends.

2. Turn on the power supply of the standby ODU at the local end. Maintain the position of

the main antenna at the remote end, and adjust the diversity antenna at the local end.

3. Turn on the power supply of the standby ODU at the remote end. Maintain the position of

the main antenna at the local end, and adjust the diversity antenna at the remote end.

If the radio link is configured with 1+1 FD and two antennas are used at one end, align the

antenna as follows:

1. After turning off the power supplies of the standby ODUs at both ends, align the main


2. After turning on the power supplies of the standby ODUs at both ends, align the standby


CAUTION

Nuts or screw bolts can be used as the azimuth adjustment device and elevation adjustment

device for antennas. For details, refer to the antenna installation instructions.

Procedure

Step 1 When the distance is long (more than 2 km), first position the antennas at both ends in a horizontalmanner. When the distance is short, finely adjust the elevation angle as the actual situation

requires.

Step 2 Connect a multimeter to the RSSI port on the ODU at the local end and test the voltage valueVBNC.

TIP

If you make the test line terminated with the BNC connector at one end in advance, it is more convenient

to test the voltage value VBNC.

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Figure 4-1 Testing the RSSI voltage by using a multimeter

Step 3 Adjust the azimuth of the antenna as follows:

1. Keep the position of the remote antenna fixed.

2. Use the multimeter to test the VBNC, and at the local end rotate the antenna widely in a

horizontal manner.

The range of rotating the antenna should ensure that the three peak signals of the VBNC are

scanned and the central peak signal has the maximum voltage.

Step 4 Adjust the elevation of the antenna as follows:

1. At each VBNC voltage peak, adjust the elevation angle so that the VBNC changes to the

maximum value within the scanned range.

2. Adjust the antenna until the VBNC voltage reaches the maximum value. Tighten the local

antenna.

When you tighten the antenna, ensure that the VBNC voltage maintains the maximum value.

Step 5 Repeat Step 2 to Step 4 to adjust the remote antenna. When the remote receive level reachesthe maximum value, tighten the remote antenna.

Step 6 Repeat Step 2Step 5 for two to four times to make the receive level at the local end and theremote end both reach the maximum value. Tighten the antennas at both ends.

Step 7 Use the multimeter to test the VBNC voltage at both ends. Read the current receive signal level

by referring to the relation curve between the VBNC of ODUs and the received signal level (RSL)

at both ends.

NOTE

The curve diagram of the VBNC and RSL is put in the carton holding the ODU.

The actual receive signal level should be consistent with the specified value: The difference

between the test value and the theoretical value ranges from 6 dBm to +3 dBm.

NOTE

If the VBNC cannot meet the above requirements, refer to the OptiX RTN 600 Radio Transmission SystemMaintenance Guide for handling.





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Step 8 Tighten all screws of antennas.

----End

4.3 Testing the ECCThe ECC is used to carry the network management (NM) information. By testing the ECC, you

can ensure that the radio link transmits the ECC normally.

Prerequisite

Aligning the antenna must be complete.

Precautions

You only need to test the ECC at one end of the radio link.

Procedure

Step 1 connect the NE to the Web LCT.

Step 2 In the NE List page, clickAdd NE.

Step 3 In the Add NE page, set the following attributes of the opposite NE.

l NE ID: the opposite NE ID

l

Extended ID: the extended ID of the opposite NEl Gateway Type: IP gateway

l IP address: IP address of the local NE

l User Name: root (default)

l Password: password (default for the user root)

Step 4 ClickOK.

In this case, a row of data for the newly added NE is added in the NE List page.

Step 5 Observe Login Status of the newly added NE.

The Login Status should be Logged In.

----End

4.4 Testing the E1 Service

By testing the E1 service, you can check if the E1 service is available between stations.

Prerequisite

l The E1 service must be configured between stations.

l Aligning the antenna must be complete.

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Procedure

Step 1 Connect the first E1 port to the BER tester at the local equipment side.

Step 2 At the opposite equipment side, perform the hardware inloop of the first E1 port.

When the hardware inloop fails, perform the software inloop of the E1 port using the Web LCT.

Step 3 Test the BER for 5 to 10 minutes by using the BER tester.

There should be no bit error.

Step 4 Cancel the loopback.

Step 5 Repeat Step 1 to Step 4 to test other E1 ports.

----End

4.5 Testing the Ethernet ServiceBy testing the Ethernet service, you can check if the Ethernet service is available between

stations.

Prerequisite

l The Ethernet service must be configured between stations.

Procedure

Step 1 Connect the port that adds and drops the Ethernet service on the local NE to laptop computer Athrough the crossover cable.

Step 2 Connect the port that adds and drops the same Ethernet service on the opposite NE to laptopcomputer B through the crossover cable.

Step 3 Set the IP addresses of laptop computers A and B. Make sure that the IP addresses of the twocomputers are in the same network section.

For example, you can set the two laptop computers as follows.

l Lap top computer A

IP address: 192.168.1.101

Subnet mask: 255.255.0.0

l Laptop computer B

IP address: 192.168.1.102

Subnet mask: 255.255.0.0

Step 4 Open MS-DOS on laptop computer A and carry out the ping 192.168.1.102-n 200 -1 2000command.

NOTE

l -n Num indicates that Num packets are transmitted to the opposite computer.

l -1 Num indicates the size of the buffer in transmission is Num bytes.

Step 5 After the ping command is run, check the statistics about the transmission and receivingconditions.





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In the displayed statistics data, no packet loss information should be contained. That is, the

following data should be contained:Lost = 0 (0% loss)

----End

4.6 Testing the WS Service

By testing the WS service, you can check if the WS service is available between stations.

Prerequisite

l The WS service must be configured between stations.


ProcedureStep 1 Connect the WS port on the PXC board to the BER tester at the local equipment side.

Step 2 At the opposite equipment side, perform the hardware inloop of the WS port on the PXC board.

Step 3 Test the BER for 5 to 10 minutes by using the BER tester.


Step 4 Release the loopback of the WS port at the opposite equipment side.

----End

4.7 Testing the Orderwire Phone

When the station is installed with the orderwire phone, by testing the orderwire phone, you can

check if the orderwire phone functions normally.

Prerequisite

l The orderwire phone must be installed correctly at the station.

l The orderwire data must be configured.


Procedure

Step 1 Check the status of the orderwire phones at both sides.

The status should meet the following requirements:

l The ringing switch must be set to ON.

l The dialing mode switch must be set to T, that is, the dual-tone dialing mode must be selected.

Step 2 Dial the orderwire phone of the opposite equipment as follows:

1. Pick up the orderwire phone, and press the TALK key on the front panel of the phone.

In this case, the red indicator on the upper right of the front panel is on, and is accompaniedby the dialing prompt tone.

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2. Dial the orderwire phone number of the opposite equipment.

Normally, after the opposite end answers, the talking quality is good and the voice is clear.

Step 3 Answer the orderwire phone as follows.

1. The maintenance personnel at the opposite equipment side dials the orderwire phone of thelocal equipment.

Normally, the orderwire phone rings and at the same time the red indicator at the back of

the phone flashes.

2. Pick up the phone, and press the TALK key to talk.

In this case, the red indicator on the upper right of the front panel is on. Normally, the

talking quality is good and the voice is clear.

----End

4.8 Testing the IF 1+1 SwitchingWhen the OptiX RTN 600 is configured with the IF 1+1 protection, by testing the IF 1+1


Prerequisite

l The equipment must be configured with the IF 1+1 protection.


Precautions

The following test procedure considers the E1 service between stations as an example. When

no E1 service is configured between stations, perform the test through other configured services

like the WS service configured in the case of the SDH microwave.

Procedure

Step 1 Connect one E1 port to the BER tester at the local equipment side.

Step 2 At the opposite equipment side, perform the hardware inloop of this E1 port.


Step 3 Test the BER by using the BER tester.The BER tester should display as normal with no bit error reported.

Step 4 View the working status of the board using the Web LCT.

1. Select the NE from the Object Tree in the NE Explorer. In the Function Tree, choose

Configuration > IF 1+1 Protection.

2. Click Query.

Active Board of Device in the Protection Group interface should be the main IF board.

In the case of 1+1 FD or 1+1 SD configuration, Active Board of Channel should also be

the main IF board.

NOTE

When any abnormal status occurs, you must clear the fault and proceed to test the IF 1+1 protection.





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Step 5 Turn off the ODU power switch on the main IF board.

Step 6 View the BER test result.

The test result should indicate that the service recover after a transient interruption.

Step 7 After the switching is complete, test the BER for 5 to 10 minutes.There should be no bit error.

Step 8 Turn on the ODU power switch on the main IF board.

Step 9 When Revertive Mode of the IF 1+1 protection is set to Revertive, test the BER by using theBER tester again.

When the restore time arrives, the test result should indicate that the service recovers after a

transient interruption. WTR Time is set to 600s by default. Test the BER depending on the

actual configuration.

Step 10 Release the loopback set in Step 2.

Step 11 At the opposite station, repeat Step 1 to Step 9 to test the IF 1+1 switching of the oppositeequipment.

----End

4.9 Testing the SNCP Switching

When the OptiX RTN 600 is configured with the SNCP, by testing the SNCP switching, you

can check if the switching is normal.

Prerequisitel The equipment must be configured with the SNCP.


Precautions

The following test procedure considers the E1 service as an example. For other service types,

perform the test in the same way or do not test this item.

Procedure


Step 2 At the opposite equipment side, perform the hardware inloop of this E1 port.

When the hardware inloop fails, perform the software inloop of the E1 port by using the Web

LCT.

Step 3 Test the BER by using the BER tester.

The BER tester should display as normal with no alarm reported.

Step 4 View the SNCP status by using the Web LCT.

The active and standby paths of the SNCP service should be both normal.

NOTE

When any abnormal status occurs, you must clear the fault and proceed to test the SNCP switching.

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Step 5 Trigger the SNCP switching by disconnecting the optical fiber connectors or cutting off thepower supply of the ODU.

During the test, the disconnected optical fiber connectors or the cut off power supply of the ODU

should be in the working path of the SNCP service.

Step 6 View the BER test result.

The result should indicate that the service recovers after a transient interruption.

Step 7 After the switching is complete, test the BER for 5 to 10 minutes.


Step 8 Reconnect the optical fiber connectors that were disconnected in Step 5, or turn on the powersupply of the ODU that was cut off in Step 5.

Step 9 When Revertive Mode of the SNCP protection is set to Revertive, test the BER by using theBER tester again.

When the restore time arrives, the test result should indicate that the service recovers after a




Step 11 At the opposite station, repeat Step 1 to Step 10 to test the SNCP switching of the oppositeequipment.

----End

4.10 Testing the Linear MSP Switching

When the OptiX RTN 600 is configured with the linear MSP, by testing the linear MSP


Prerequisite

l The equipment must be configured with the linear MSP.

l The active and standby optical cables for the linear MSP must be normally connected.

Precautions

The following test procedure considers the E1 service as an example. For other service types,

perform the test in the same way or do not test this item.

Procedure


Step 2 Perform the hardware inloop of this E1 port at the opposite equipment side.

If the hardware inloop fails, perform the software inloop of the E1 port by using the Web LCT.

Step 3 Test the BER by using the BER tester.

The BER tester should display as normal, and no bit errors should be reported.

Step 4 View the linear MSP status by using the Web LCT.





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For the working unit and the protection unit of the service that is configured with the linear MSP,

West Switching Status should be both Idle.

NOTE

If any abnormal status occurs, first clear the fault and go with the test.

Step 5 Trigger the linear MSP switching by shutting down the laser.

1. In the Object Tree of the NE Explorer, select the board that works as the working unit of

the linear MSP. In the Function Tree, choose Configuration > SDH Interface.

2. Select By Board/Port (Path), and set Laser Switch of the service port to Close

3. Click Apply.

In the test, the laser to be shut down should be in the working path of the service that is configured

with the linear MSP.

TIP

You can also trigger the linear MSP switching by disconnecting the fibers.

Step 6 View the result of the BER test.

The result should indicate that the service recovers after a transient interruption.

Step 7 After the switching is complete, test the BER for 5 to 10 minutes.


Step 8 Turn on the laser that was shut down in Step 5, or reconnect the optical fiber connectors thatwere disconnected in Step 5.

Step 9 IfRevertive Mode of the linear MSP is set to Revertive, test the BER again by using the BERtester.

When the WTR time arrives, the test result should indicate that the service recovers after a



NOTE

Revertive Mode of the linear MSP can be set to revertive or non-revertive. Revertive Mode of the 1:1

linear MSP is always set to revertive.


Step 11 IfSwitching Mode is set to Single-Ended Switching, repeat Step 1 to Step 10 to test the linearMSP switching of the opposite equipment.

----End

Postrequisite

IfRevertive Mode of the linear MSP is set to non-revertive, stop and start the MSP protocol to

restore the MSP status to normal.

4.11 Testing the 24-Hour BER

By testing the 24-hour BER, you can check if the equipment can transmit services stably in along term.

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Prerequisite

Aligning the antenna must be complete.

Precautionsl When the 24-hour BER cannot be tested for each HOP of the link due to the restrictions of

the actual conditions, choose the E1 service of the first and terminal node to perform the

test. This operation can ensure that the test path covers the entire radio links.

l The following test procedure considers the E1 service between stations as an example.

When no E1 service is configured between stations, perform the test through the configured

WS service (only applicable to the SDH microwave).

Procedure

Step 1 At the opposite equipment side, extract several typical E1 services, and perform the hardware

inloop of these E1 ports.


Step 2 At the local equipment side, connect these E1 services serially at the DDF, and then access themto the BER tester.

Figure 4-2 Serial connection of E1

RX TX

DDF

1

2

3

4.

.

.

.

RX TX

BER tester

Step 3 Perform the 24-hour BER test by using the BER tester.

Step 4 Record the test result.

It should be compliant with the design requirement.

Step 5 Release the loopback and serial connection.

----End

Postrequisite

l If the first 24-hour BER test does not meet the design requirement, find out the cause and

clear the fault. Perform another 24-hour BER test until the test is passed.

l If the BER exceeds the nominal value in the test for a serial connection, locate the fault by

using the dichotomizing search or other methods until each channel passes the 24-hourBER test independently.




01-04 hop commissioning

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