Post on 09-Jan-2016
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Technical Method of Procedure Template04/02/15
MOP for 1+0 Link Upgrade with AMM Upgrade:[T183 Fullarton T172 Coromandel]
Change requested byNaseema Mohammed
PositionTransport Engineer
Date Change Requested
Requested Implementation Date
Type of ChangeMicrowave Equipment
For standard Changes onlyChange ID
Date Change Last Reviewed
Table of Contents
1.Overview of change requested41.1.Change Description41.2.Reason for Change41.3.Before and After Snapshot42.IMPLEMENTATION Procedure52.1.Pre Checks52.2.High level Steps52.3.Low level Step52.4.Standard Change Parameter Change63.rollback Procedure73.1.Rollback Trigger73.2.High level Steps73.1.Low level Steps74.Impact84.1.Planned impact84.1.1.Service Impact84.1.2.Network Impact84.1.3.KPI Impact84.2.Potential impact85.testing105.1.Test Plan106.POST implementation116.1.Post Check Results116.2.Test Results116.3.Actual impact116.3.1.Service Impact116.3.2.Network Impact126.3.3.KPI Impact127.change closure137.1.Closing Comments137.2.Change Success13
Overview of change requested
Change Description
To change the Transmission Equipment (Antenna, RAUs and AMM) in order to implement the necessary capacity for expansions in the Transport Network.
Reason for Change
There is need for more capacity across the Transport Network to facilitate LTE and 4G expansions, hence new link budgets to implement the need for greater capacities were created. Equipment will now be upgraded to suit the link budget to implement the expansion. The link upgrade requires additional cards which will be supported by upgrading the magazine.Link being upgraded: [T183 Fullarton T172 Coromandel]
Before and After Snapshot
IMPLEMENTATION Procedure
Pre ChecksVerify the status of the service of the site (the two sites related to the link), and if there are any current alarms regarding this site. This should be confirmed with the NOC.
#CheckPass / Fail Criteria
T183Check if there is management to the TN (Pass), confirm current alarms
T172Check if there is management to the TN (Pass), confirm current alarms
High level Steps
These steps refer to activities being carried out on [T088] and [T434] in parallel#StepsProposed Start Time / DateProposed End Time / DateService Impact
1Call NOC to notify on site and start of activity11:55am12:00amNo
2Back up configuration on TN12:00am12:05amNo
3Uninstall the current AMM/Antenna12:05am12:25amYes
4Install new AMM/Install new antenna12:25am12:50amYes
5Download Software Baseline R5.1.2 software to the AMM12:50am12:55amYes
6Standardize the software on TN cards and components12:55am1:00amYes
7Confirm configurations on TN1:00am1:05amYes
8Install RAU/Complete connections1:05am1:15amYes
9Power On Link1:15am1:20amYes
10Configure Link1:20am1:30amYes
11Align the Link1:30am2:45amYes
12Confirm TDM Cross connections2:45am2:55amNo
13Call NOC to verify sites on air2:55am3:00amNo
14Confirm with the NOC when leaving site3:00am3:05amNo
Low level StepThe low level follows the high level steps mentioned above where the configuration and alignment of the link follows the below the link budget:Coromandel 172Fullarton 183
Latitude10 07 25.60 N10 05 27.80 N
Longitude061 48 13.10 W061 52 47.30 W
Easting ( m)631074.9622741.3
Northing ( m)1119338.41115690.2
UTM zone20N20N
True azimuth ()246.5766.55
Vertical angle ()-0.440.38
Elevation (m)73.0812.49
Tower height (m)45.0045.00
Antenna modelANT2 0.6 7/8 HP (TR)ANT2 0.6 7/8 HP (TR)
Antenna file name0621095sc15_r10621095sc15_r1
Antenna gain (dBi)31.8031.80
Antenna height (m)25.0020.00
Frequency (MHz)7627.00
PolarizationVertical
Path length (km)9.10
Free space loss (dB)129.29
Atmospheric absorption loss (dB)0.09
Net path loss (dB)65.7965.79
Radio modelMLTN 7/2X 035/128MLTN 7/2X 035/128
Radio file namee24072001600035e24072001600035
TX power (dBm)18.0018.00
Emission designator6M12D7W6M12D7W
EIRP (dBm)49.8049.80
TX channel assignments7c25 7550.50V7c25' 7704.50V
RX threshold criteria1E-6 BER1E-6 BER
RX threshold level (dBm)-72.00-72.00
Receive signal (dBm)-47.79-47.79
Thermal fade margin (dB)24.2124.21
Dispersive fade margin (dB)62.4062.40
Dispersive fade occurrence factor3.00
Effective fade margin (dB)24.2124.21
Geoclimatic factor2.231E-005
Grazing Angle222222.00
Path inclination (mr)7.21
Average annual temperature (C)25.31
Fade occurrence factor (Po)8.165E-011
Worst month multipath availability (%)100.00000100.00000
Worst month multipath unavailability (sec)0.000.00
Annual multipath availability (%)100.00000100.00000
Annual multipath unavailability (sec)0.000.00
Annual 2 way multipath availability (%)100.00000
Annual 2 way multipath unavailability (sec)0.00
PolarizationVertical
Rain regionITU Region P
0.01% rain rate (mm/hr)145.00
Rain rate (mm/hr)897.41
Flat fade margin - rain (dB)24.21
Rain attenuation (dB)24.21
Annual rain availability (%)100.00000
Annual rain unavailability (min)0.00
Annual rain + multipath availability (%)100.00000
Annual rain + multipath unavailability (min)0.00
Standard Change Parameter Change
For standard changes, this section is the only section that need to be updated. No other section should change and the MOP will still be valid.rollback Procedure
Rollback TriggerA roll back will be conducted for but not limited to the following The Link Drops and cannot be re-established Faulty MMU2K Cards Interference found after link is established
High level Steps
#StepsProposed Start Time / DateProposed End Time / DateService Impact
1Agree with Digicel SPOC to rollback2:30am2:35amYes
2Uninstall new component2:35am2:55amYes
3Install old component (antenna/RAU/AMM)2:55am3:25amYes
4Power On Link3:25am3:35amYes
5Configure Link3:35am3:45amYes
6Align the Link3:45am4:15amYes
7Call NOC to verify sites on air4:15am4:20amNo
8Confirm with the NOC when leaving site4:20am4:25amNo
0. Low level StepsThe low level follows the high level steps mentioned above, where the old TN configurations which were stored are re-configured.Impact
Planned impact
Service Impact2G and 3G Services of the site:
Details of ImpactMagnitude of impactCustomers Impacted Start timeEnd time
2G Services: No Service/T183 Fullarton and T172 Coromandel12:00am3:00am
2G Services: No Service/ T172 Coromandel and T216 Bonasse12:00am12:25am
3G Services:No Service (T172 Coromandel)12:00am12:25am
Network Impact 2G and 3G Services of the site:
Details of ImpactMagnitude of impactCustomers Impacted Start timeEnd time
2G Services: No Service/T183 Fullarton and T172 Coromandel12:00am3:00am
2G Services: No Service/ T172 Coromandel and T216 Bonasse12:00am12:25am
3G Services:No Service (T172 Coromandel)12:00am12:25am
KPI Impact2G and 3G Services unavailable:
Details of ImpactMagnitude of impactCustomers Impacted Start timeEnd time
2G Services: No Service/T183 Fullarton and T172 Coromandel12:00am3:00am
2G Services: No Service/ T172 Coromandel and T216 Bonasse12:00am12:25am
3G Services:No Service (T172 Coromandel)12:00am12:25am
0. Potential impact
Potential ImpactTrigger for impactRisk of OccurrenceMitigations in Place
Site Remains off air Faulty Microwave System componentsLowSpare components on site.
testing
Test No.CategoryTestExpected ResultSuccess Criteria
S1Service Verification2G and 3G sites taking traffic
Voice will be accessible
Traffic being taken on site
O1Operational Verification2G and 3G sites on air and able to connectConnection successfulAble to connect
A1Alarm VerificationVerify the TN alarms.No Alarms.No Alarms after Operations
Test Plan
POST implementation
Post Check Results
Check No.CheckPass / Fail
1
Test ResultsTest No.ResultPass / FailComment
Actual impact
Service Impact
Details of ImpactMagnitude of impactCustomers Impacted Start timeEnd timeComparison with Planned impact
NO IMPACT
Network Impact
Details of ImpactMagnitude of impactCustomers Impacted Start timeEnd timeComparison with Planned impact
NO IMPACT
KPI Impact
Details of ImpactMagnitude of impactCustomers Impacted Start timeEnd timeComparison with Planned impact
NO IMPACT
change closure
Closing Comments
Change Success
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Technical Method of Procedure TemplatePage 8 of 14