SCFT-Training v 10.0

SCFT Procedure

Prepared by: Samsung

Course Name: SCFT Procedure

Course Objective

This module will enable participants to understand how to conduct SCFT with hands on practice using S4 Mini

This module will also help to understand the Work Flow Management for SCFT(WAS-SCFT)using online portal SITFORGE.

Who should attend

Field engineers -Solpar

Drive test Engineers-Solpar

RF Leads / Area Managers-Samsung

Quality Manager-Solpar & Samsung

Session -1

Lun

ch b

reak

Session -2

Day 1

SCFT Introduction

SCFT Physical Checks & Preparation

SCFT Tests

SCFT Tool & Process (XCAL mobile - software version Operational Process

SCFT Demo- Using s4 Mini handset

SCFT -S4 Mini/ troubleshooting Guide

Important Notes

Hands on exercises

SCFT WAS Workflow

SCFT Site forge module demo

Accelerating SCFT process

Document History

Edition Date of Issue Author Remarks

Ver 1.0 15th Feb 2014 Samsung

Training Team Preyas Hathi

Initial Version for conducting Pilot batch

Ver 2.0 1st March 2014 Samsung

Training Team

Added Roles and responsibility of DT engineer, Solpar PM and Area manger

Ver 3.0 18th May l2014 Samsung

Training team

SCFT Drive test process updated

Ver 4.0 20th June 2014 Samsung

Training team

Added site forge WAS module

Ver 5.0 13 July 2015

Samsung Training team

Added S4 Mini Troubleshooting process

Document History

Edition Date of Issue Author Remarks

Ver 5.0 14Aug2014 Samsung

Training Team

SCFT Drive test is to be done only within Best server plot of the site and only a single road towards neighbor site is to be driven

Ver 6.0 15 Oct 2014 Samsung

Training Team (HD)

Merged SCFT process and WAS into one slide Updates : Merged SCFT process and added siteforge WAS

Ver 7.0 28 Oct 2014 Samsung

Training team (HD)

Updated the SCFT issues as per guidelines for Solpars Updates : As per solpar field issues listed added and or modified slides #11, 37, 38, 39

Ver 8.0 01 Nov 2014 Samsung

Training team (HD)

Updated the SCFT issues as per guidelines for Solpars Updates : As per solpar field issues listed added and or modified slides #40, 52, 53

Ver 9.0 13 Jan 2015

Samsung Training team Ashish Shukla

Accelerating SCFT Process change recommendation From Slides 84 to 107

Ver 10.0 13th March 2015 Samsung WJ Lee

Added Additional Trouble shooting Slide :90-101 Accelerating drive test Process Slides 135,138-145

Good to know

Keep your mobile phone in the silent mode during the session

Need to sign attendance sheet at the start and end of each day

At the end of each training post test will be conducted

Stick to break timings

Your valuable feedback will be taken at the end to enhance training experience

For logistics support contact the co-ordinator

Agenda Health & Safety Requirements

Introduction to SCFT What is SCFT

Overview of SCFT Process

SCFT Workflow

Roles & Responsibilities

SCFT Requirements Lead time

Tools

Preparations for SCFT TSSR Review

eNB Parameter Review

Drive Route

Checklists

Agenda

Physical Site Check

Measurements of height, azimuth, tilt

Drive Test

SCFT Stationary test

SCFT Moving test

Checklist during drive

Post SCFT Drive

SCFT Tool(XCAL mobile - software version v4.09.139 ) Operational Process

Stationary test

Moving test

SCFT S4 Mini Trouble shooting guide

Important Notes

Accelerating SCFT process

Introduction to SCFT

Single Cell Functional Test (SCFT)

Verification of

Availability and performance of desired services

Physical configuration of the eNodeB for each sector

Correct installation and configuration of the eNodeB

Testing specific services at the site and while driving around the site

((( (((

SCFT Process

Preparation for SCFT

Physical checks of eNB site

Pass

Drive Test

Adjust Antenna Parameter and

etc. Yes

No

Submit SCFT report to RJIL

SOLPAR Scope

Instruction from SOLPAR Project Manager

SCFT Team Composition

SOLPAR PM

DT Engineer

DT Engineer

Roles & Responsibilities SOLPAR Project Manager

Daily tracking of progress status

Extend support to circle SCFT Team for their minor & critical issues.

Interact with Samsung on Progress Management: Daily, Weekly, Monthly basis.

SCFT Team Management and site allocation to DT Engineers, Riggers & Car drivers.

Validation of drive routes, discussion of issues, site performance analysis

Support field team for troubleshooting and any other support during SCFT activity

Prepare the RF Database and data backup of all drive related tests ( including any snaps) and provide to Samsung

Roles & Responsibilities SOLPAR DT Engineer

Perform Field Test: DT testing and data collection during - SCFT/Cluster Optimization

Check site information & change Ant. Parameters

Carry all the necessary tools in field

Rigger will check site as per the checklist

Rigger will make corrections on site and inform Drive Test Engineer

Drive Test Engineer will create the drive routes & configure the Smart S4 mini as per defined test scenarios

Drive Test Engineer will save the log file. In case of handoff fail, bad RSRP, call drop etc., inform respective teams immediately

Summary

Strictly follow all the health & safety guidelines

SCFT verifies the availability and desired performance of a site

SCFT involves physical & parameter check of eNodeB, corrections if needed, followed by a drive test around the site

SCFT team consists of an DT engineer, Rigger and Car driver with well-defined roles and responsibilities for all

Quiz

You find that the antenna azimuth is incorrect. You will _________

Correct it, log and report the error and then proceed with drive test

Proceed with the drive test and report it later

Cancel the drive test

During the drive test, handover fails. You will _______

Continue with the drive test as it is

Report it to the respective team before continuing

Cancel the drive test

EMF survey is conducted by rigger_______

Before the SCFT drive

After completion of the SCFT drive

In parallel with the SCFT drive

SCFT Requirements

Tools Required

S.No Tool Name Description Specification

1 Vehicle with AC Driving test & power supply Must have cigarette lighter point for

connecting the power inverter

2 Power inverter DC to AC Over 500W

3 Smart phone (with D

M application) UE with XCAL

Need 2 test mobile phones

- DL, UL and VoLTE test

- SIM card to support from RJIL

- 2 EA Charger

- 2 EA Extra battery (Optional)

- 2 EA Smart phone holder

4 Compass Measurement of antenna azimuth

5 Tilt Measure Measure the antenna tilt

6 Laser meter or measu

ring tape Require to check the antenna height

If using measuring tape, above 50 m

eters

7 Multi tab

(Power extension)

Extension cable for connections of lap

top etc. Over 5 Ports

8 Spanner Adjustable spanner 1 set

9 Handset S4 Mini 2 nos

10 Tool kit Rigger tool kit, for physical changes 1 set

UE (Smart phone) Testing

Check performance of the smart tool DM at least twice a month, e.g. in the 2nd and 4th week of the month

Check at a location where following coverage criteria are met

RSRP : better than -70dBm

SINR : better than 23 dB

Check based on RF parameters RSRP, SINR, Throughput, MCS, CQI etc

Maintain a detailed sheet to identify the best performing Smart DM tools

Maintain performance check records with history as per the attached sheet

Appendex-Smart DM performance management.xls

Preparations for SCFT


S4 mini mobiles should be ready with fully charged condition along with mobile charger, Mobile holder, Inverter, 4 points spike guard

Rigger readiness along with tool kit and safety Kit (Safety belt, Safety Shoes & Helmet)

7) If wall mount antenna or Highway/Flyover mount site, then accordingly arrange extra wall mount rigger with rope etc and hydraulic vehicle (by informing SOLPAR PM and Samsung area manager) in advance respectively

SOLPAR Engineer will collect the TSSR Report & Cell ref file from SOLPAR PM who in-turn shall collect the TSSR report & Cell ref file from Samsung circle RF Lead

Check the alarm status from LSMR engineer and ensure not to have any service affected alarm on site

Check other tools readiness like magnetic compass, tilt meter and laser meter

Get Site Access Confirmation from SOLAPR PM

Important:

no Test can be carried out if the handset. Is less

than 10% charged


TSSR/Cellref Review

eNB Parameter Verification from LSM-R

Drive Route Checklist


Technical Site Survey Report (TSSR)/ Cell ref info

Ensure that the site is verified as per TSSR/Cell ref file, any deviation need to report Samsung immediately

Attached annexure-1 for the same to be filled up and handed over to SOLPAR PM, who later sends it over to Samsung RF manager.

In case of any deviation in the same it needs to be corrected in cell ref file/field before proceeding for the drive.

If its a RP1 site and On field data does not match with cell ref file then no need to rectify physical parameter at field but need to correct only cell ref file.


Site information

Site Name, and Site Address

Site location in terms of LAT/LON

PCI

Antenna parameters

Antenna Azimuth, Antenna Height, Antenna Tilt(electrical tilt)

Antenna physical blockage in main/side lobe (if any)

Tower type (RTT, Wall mount, Pole mount, GBT) in case of wall mount arrange extra wall mount rigger with rope

Simulation (Coverage Statistics

RSRP)

Outdoor Analysis of signal strength for outdoor coverage

Indoor Analysis of signal strength for indoor including penetration loss

Worst Area Analysis by Simulation Plot

Technical Site Survey Report (TSSR/Cell ref)

Important: Check alarms before moving to site for SCFT


Satellite & Vector maps

Satellite map: Pre analysis for service area. Google earth snapshots of actual locations and populated areas

Vector Map: Refer during drive test.

Site drawing map

eNB installation information such as Antenna Pole Location

Antenna direction in terms of Azimuth

Location of ODU (outdoor unit) or shelter room of eNB

Location of other operator Antenna Pole & Shelter room

Technical Site Survey Report (TSSR/Cellref)


TSSR /Cell refReview




SOLPAR Project Manger instructs solpar Field engineer to collect eNB parameters from LSM-R engineer(Samsung)

SOLPAR DT engineer will act accordingly and request status of eNB parameters from LSM-R engineer (for alarms and site readiness verification)

LSM-R engineer will instruct DT Engineer (SOLPAR) If site has service impacting alarm that need site visit by deployment team, then the DT Engineer shall move over to the next site as assigned by SOLPAR Project manager.

SOLPAR Project Manager has to keep Samsung circle RF lead in loop for all communication


SOLPAR PM

SOLPAR DT Engineer

OPT Engr


Line items to be checked by LSMR engineer before the SCFT are as follows:

Site operational status (Site should be ON)

Site should be free from service affecting alarms (like VSWR etc.)

Identify and inform the latest PCI for both the test site and the neighbor sites (if the cluster is already launched) with LSMR engineer before moving to the site. Neighbor site PCI can be taken from LSMR engineer.

SCFT site vital parameter needs to be checked like ANR enabled, Handover defined etc.

Configuration Parameters

PCI,Cell,TAC ID

TX power from LSMR

SON, ANR features

Access class barred for other UEs

MIMO Mode

(TM3/TM4) from LSM-R

MIMO Type (2x2, 4x2)

from LSM-R

Smart scheduler

OFF


Service Affecting Alarms

Site down

High drop Rate

Low Tx Power

GPS Alarm

VSWR values

VSWR should be


RF Parameters

Handoff Parameters, PCI Parameters, ANR List - Neighbor List.

eNB Installation Information

eNB installation ATP completed



TSSR Review eNB Parameter

Verification from LSM-R


Drive Route Basics

All sectors to be covered during the test

Carry a hardcopy of the drive route direction, while DT reaches the

Instruct the driver to follow the drive route

Drive Route Guidelines

Best server plot Drive route to be collected by SOLPAR DT engineer from Circle RF Lead before he reaches the site.

All motorable roads covering all three sectors of the site are to be driven. The motorable roads which are not accessible or cant be driven due to any blockage should be captured with a snapshot for proof.

If SCFT is performed on a standalone site then each sector to be driven up to serving cell RSRP as per morphology in the main lobe as defined in under mentioned table:

Morphology Type Coverage Threshold (RSRP dBm)

Dense Urban -107

Medium Urban -110

Suburban -113

Rural -116

Morphology RSRP levels

Drive Route Guidelines..

If SCFT is done on a site that is not a standalone site and the neighbor site is radiating then the drive route should be done until the handover happens with the neighbor site, but if the Neighbor site is not radiating then the drive should be done until neighbor site.

The stationary test should only be done in the main lobe of serving antenna DT Engineer will instruct the car driver for the direction to be followed based on pre-

defined drive route based on GPS location in drive test tool. Engineer will carry the drive route handmade copy, during the SCFT test.

Drive Test Route Sample

Drive Route Example

Major Road

More than one lane

Important road that leads from

one town or city to another

Minor Road

One lane

A side road may be a narrow street off a

major street


TSSR Review eNB Parameter

Verification from LSM-R


Check list for DT Engineer

Site access confirmation to be done in advance via Samsung area manager and DT should get in touch directly with the person having key to the site.

Confirmation from Samsung area manager for eNB Commissioning (ATP11B) to be passed without any punch points before going for SCFT.

Two S4 mini mobile phones fully charged and mobile chargers should be ready.

DT and rigger ID proof and Reliance representative authorization letter (multiple photo copies) of the DT and rigger having permission from RJIL to conduct DT on behalf of RJIL (letter should not be site specific rather it should be in general so that the same can be used in all sites). This letter to taken from SOLPAR project manager who will get this letter from Samsung Area Manager.

Site TSSR/Cell ref to be checked in advance, orientation and lat/long of site and antenna location type (in case of wall mount antenna, extra riggers to be arranged one day in advance, prior to the test)

Check list for DT Engineer

Site access confirmation to be done in advance via Samsung area manager and DT engineer should get in touch directly with the site owner

Magnetic compass to measure azimuth

Laser meter or measuring tape to measure antenna height

Tilt meter to measure the antenna tilt.

S4 mini should have adequate space to store snaps taken by mobile in case of drive getting obstructed.

Car with Cigarette lighter Inverter, spike guard and mobile holder for the mobile to stick on dashboard over the holder

Hydraulic vehicle in case of highway/road/Flyover mounted sites, request should go over to SOLPAR PM and Samsung area manager a day in advance who will gets in touch with Reliance area manager for the same.

Fill up the attached Annexure (Total 3) as in check list and handed over to SOLPAR PM, who sends it over to Samsung RF manager.

Handset should be fully charged else no Test can be carried out by the handset

Check list for Rigger

Weather proofing kit.

Tool Kit (Spanners/Knife/Hammer/Cable Tie etc.)

Connector making tools for loose connectorization.

Safety belts

Safety shoes

Helmet

Rope with board and extra riggers (with full protective gear) in case of wall mount sites.

First aid box

Attached annexure 3 for the same to be filled up and handed over to SOLPAR PM, who sends it over to Samsung RF manager.

Check FTP Connectivity

FTP server Connectivity

Check FTP server connectivity before

leaving the site

OK

Proceed to the site

OK

Start testing

Resolved

Contact Circle Samsung RF lead team for the resolution

Check FTP server connectivity on site

Yes

Yes No

No

Yes

Yes

SOLPAR RF engineer to has confirm FTP server connectivity before leaving to the site

SOLPAR RF engineer to has confirm FTP server connectivity upon reaching to the site

Summary

Perform regular testing of drive-test UEs

Preparations for SCFT consist of TSSR review, eNB parameter verification from LSM-R, availability of drive route and checklists. Before proceeding to the site make sure you have these

TSSR gives details about eNB physical parameters such as antenna height, azimuth, tilt, pictures of obstruction, site drawings and map views

LSM-R parameters include details such as VSWR, Tx power and PCI

Ensure FTP connectivity before proceeding to site

Cover all sectors during the drive

Physical Checks at Site

Physical checks during site survey

Physical verification of site with respect to data given in TSSR/Cell ref. Need to check under mentioned points.

Once DT engineer reaches the site he should validate the PCI as seen on field with cell ref file and then perform a walk test around the site in clockwise and anticlockwise direction for checking the inter-sector handover and correct PCI as seen in cell ref: file.

Site location in terms of Lat/Long, Site name and address, Antenna azimuth, Antenna height, Antenna Tilt (Mechanical Tilt), Antenna physical blockage in main/side lobe (if any) & Tower type.

If there is any deviation in actual versus TSSR/Cell ref then SOLPAR engineer will try to rectify it on field with due permission from Samsung RF lead and if he is unable to do so then the same shall be informed to Samsung and the DT should move over to the next site.

If the deviation cannot be corrected as confirmed by Samsung RF lead, then the same has to be updated in site forge by the DT engineer.

Physical checks during site survey

Only after completing physical verification and passing the same SOLPAR engineer will start performing SCFT activity.

In case of tower/antenna access issue from bird nests, honeybees comb etc. the corresponding Samsung area manager should be informed and DT should move to the next site.

SCFT once started should be completed within the same day, until and unless there is some constraint that is making the process shift to other day.

Physical blockage in direction of serving antenna should be noted and snapshot should be taken. The same comment with snaps has to be updated in the SCFT report by SOLPAR project manager. The SCFT has to be carried on however.

Measuring Site Co-ordinates Check the battery of GPS (72 channel GPS)

Point GPS towards clear, open skies for accuracy

GPS Setting time >5 min & GPS number of satellites > 4

Low Battery voltages and rare Geomagnetic storms may result in erroneous GPS readings

GPS should not be used for Ground Elevation readings as the inaccuracy can be well over 30m

Stand in the center of the site location (GBM, RTT,RTP)

Once the satellites are acquired, note co-ordinates for N & W in degree - decimal format.

Update this information into check list for pre-post comparison and for database tracking

Checking Antenna Azimuth

Stand in front of the Antenna

When taking compass readings, keep at least 8m distance from any magnetic, metal, or current carrying structures such as towers, vehicles, or cables for correct readings

Open compass and wait a moment till the compass needle is stationary

Check the antenna azimuth with reference to North & measure the value in degrees

Compare the observed value with the one in the TSSR

In case a mismatch is detected, make corrections on site

Mention the values in the check list for pre-post comparison and for database tracking

Check Azimuth marking on map

Check the service direction of the antenna

Mark the main serving direction of the antenna on the map

Tower Height Measurement Laser Meter

Stand on the edge of tower

Press start button and then press measure button

Wait for 2-3 minutes or check the ground or building from the built-in binoculars in the laser meter

Press the measure button again

Take pictures of the value in meters

Tower Height Measurement - Tape

Drop the measuring tape from the edge of the tower platform

Team member at the ground end will record the value

Antenna Height RTP / RTT

Antenna Height GBT / GBM

Compare the value on TSSR with actual result

Correct the Antenna Height if mismatch with TSSR Report

Antenna Mechanical Tilt Measurement

Bring tilt measure in contact with antenna on the back side & center()

Adjust the tilt measure () to level off ()

Check tilt of antenna (), as per the picture red line is on 3rd mark from zero, which means that the tilt is 6 degrees {one mark = 2 degree and consider the bottom scale}

Compare the value on TSSR with actual result

Correct the Mechanical Tilt in case of mismatch with the TSSR Report

Mention the values into check list for pre-post comparison and for database tracking

To change tilt, loosen all nuts, adjust tilt as desired and then tighten them

Drive Test

SCFT Drive Test

After completing physical verification, SOLPAR engineer will start performing drive test.

Drive test to be performed on all motorable roads.

The mobiles need to be attached on car dashboard while doing drive test.

Check FMS server connectivity to site by downloading test scenarios on XCAL Auto Mobile over mobile.

SCFT drive test activity has two type of tests.

1. Stationary Test

a. Attach

b. VOLTE Short call

2. Moving Test

a. FTP -DL

b. FTP -UL

Stationary Test ( Alpha Sector)

Drive test engineer will start the drive test activity with stationary test.

Move over to Alpha sector and perform following activities

Latch on alpha sector PCI and RSRP, it should have a stable dominant RSRP level from serving cell, and neighbor cells should not be dominant.

Check GPS status and select destination value of co-ordinates from map window.

Assign Stationary-1 call setting with Cycle information & site details, (CYCLE should remain the same until the complete SCFT test (STATIONARY & MOVING) ends), if you have to restart the test cause of any issue then issue new and different cycle number, but it should be same for stationary and moving test (ideally it should be incremented by 1, every time you repeat the test on same site), cycle is a reference for naming the log files.

Stationary Test Procedure:

Stationary Test( Alpha Sector)

Perform under mentioned test by pressing AUTO CALL over the s4 mini phone.

. Stationary Test

a. Attach

b. VOLTE Short call

At the end of Auto call press status as In Progress.

Press Auto DRM/DRX Upload button which is popped up & wait for upload to finish.

Stationary Test(Beta Sector)

Drive test engineer now moves over towards Beta sector and performs the following activities during stationary test: Check PCI

Assign Stationary-2 call setting with cycle information & site details

Perform under mentioned test by pressing AUTO CALL over s4 mini handset.

a. Attach

b. VOLTE Short call

At the end of Auto call press status as In Progress.

Press Auto DRM/DRX Upload button which is popped up & wait for upload to finish.

Stationary Test( Gamma Sector)

Drive test engineer shall move over towards Gamma sector and perform the following activities during the stationary test

Check PCI and latch to it.

Assign Stationary-3 call setting with cycle information & site details

Perform under mentioned test by pressing AUTO CALL over s4 mini handset.

a. Attach

b. VOLTE Short call

At the end of Auto call presses status as Completed.

Press Auto DRM/DRX Upload button which is popped up & wait for upload to finish

Moving Test

After completion of Stationary test now the DT has to go for the Moving test, drive test engineer will use two S4 mini handsets. There will be two different tests that shall be performed on these handsets. One handset for DTDL One handset for DTUL

Moving test call logging should start by performing a walk test around the site in clockwise and anticlockwise direction for checking the inter-sector handover within the SCFT site and checking the correct PCI as seen in cell reference file. Drive test engineer will carry out the remaining part of moving test while in car in a continuous log. Keep checking the PCI of serving cell so as to confirm handover between neighbors of same site. Move from Alpha sector to Beta sector to check handover between them. Move from Beta sector to Gamma sector to check handover between them. Move from Gamma sector to Alpha sector to check handover between them. Move from Alpha sector to Gamma sector to check handover between them. Move from Gamma sector to Beta sector to check handover between them. Move from Beta sector to Alpha sector to check handover between them. Make Coverage footprint of each sector in all possible drive routes based on Morphology based RSRP

Levels. After finishing the clockwise / anti-clockwise routes, You must run through DTR (Drive test route) provided

to you by Samsung RF lead

NOTE : Samsung RF lead has to provide DTR based on best server plot , as per example attached below. Or Alternately Samsung RF lead must follow procedures provided by National RF Optimization team to prepare DTR , This is Mandatory

Moving Test

Important: If handovers are not happening between neighbor cells then stop the drive and call up LSMR engineer for handover definition or any alarms related to the same, and resume the drive, post the resolution of the same.

Press Stop after completion of drive on both handset( based on steps as above) and press status as "Complete . Press Auto DRM/DRX Upload button which gets popped up in both handset & wait for upload to finish. Ask the LSMR engineer to lock the site. Inform the SOLPAR PM and Samsung area manager about the completion of the drive and move for the next drive if time permits for the day.

Checklist during drive

If any Attach fail, /Access fail, Handover fail, Sector swap are observed during drive test then call should be immediately stopped and LSMR engineer should be contacted for any running alarm. Later fresh drive for the same should be done post rectification.

During drive test and eNB physical verification if any physical obstruction due to which drive couldnt be done on that road then SOLPAR DT engineer needs to take the snapshot and pass it over to Solpar PM.

If SOLPAR engineer cant drive around in the clockwise or anticlockwise direction then he has to mention the reason against the same along with a snapshot proof. Also if for the stationary test, SOLPAR engineer is unable to go into the main lobe while still in car, then he must try to walk and go into major lobe of the sector, if even that is not possible then he should take snaps to support the same.

The SOLPAR engineer should not wait more than 30 mins (post escalation to LSMR and self troubleshooting) for any issue resolution at the site. If issue resolution is taking time, then he should move to the next site.

Post SCFT Drive

All snapshots post SCFT (road and antenna obstructions) should be taken and sent to SOLPAR Project Manager/ Samsung Area Manager/Circle RF Lead.

Backup of log files in memory card to be taken by the DT (this will required if any file got corrupted during upload). Same to be handed over to Circle RF Lead.

Contact LSMR Engineer to lock the site (all three sectors).

Handover the keys back to from where they were taken.

Inform the Solpar PM and Samsung RF lead about completion of the drive test.

Move over to the next site.

SCFT Tool (XCAL mobile - software version v4.09.139 )

Operational Process

SCFT Tool(XCAL mobile) -Operational Process

Please follow below step by step process, in order to conduct SCFT automation process on XCAL Auto call

Only 1 mobile is used for Stationary test.

The screenshots are only applicable to handset software version v4.09.139

Start Samsung S-4 Mini testing handset.

Stationary Test:

SCFT Tool Operational Process Stationary Test

Start X-Cal Auto on handset and wait for IP framing Message.

Press GPS unlock message (If it appears)

SCFT Tool Operational Process Stationary Test(Alpha Sector)

Wait for GPS to latch with satellite

Latch on Alpha PCI and start from Alpha Sector.


Go to Report mode and select the same. As depicted in below screenshots.


GPS Selection: Give destination value of Co-ordinates from map window of handset (if location not automatically pointed, then do it manuallyby pressing GPS value and once map can be seen then locate your position on map, and pressing and holding the probable area where you might be based in. manual process shown below) ,green dot of GPS shall appear then press Back button( as shown in third screen shot) and check if GPS coordinates have appeared on screen. GPS is latched now.


Download name of the cluster by pressing Down on Handset.

After pressing Down, name of cluster (MUMB-0107 here) in which the Lat/long is lying shall pop up, select it.


By pressing Setting in main window assign under Select type, SCFT and then under Test type STATION 1 (refers to stationary 1 test) and then under Site select Site name and select Cycle number under Cycle and press Save. (CYCLE should remain the same until the complete SCFT test (STATIONARY & MOVING) ends), if you have to restart the test cause of any issue then issue new and different cycle number, but it should be same for stationary and moving test (ideally it should be incremented by 1, every time you repeat the test on same site), cycle is a reference for the log files.

By pressing Setting in main window assign under Select type, SCFT


Under Test type STATION 1 (refers to stationary 1 test) and then under Site select Site name


Select Cycle number under Cycle and press Save.


In same handset by pressing Scenario in main window select SCFT and then press OK over the prompt SCFT change scenario. Now press Start under Autocall.


You can see the following test happening one by one.

SCFT Tool Operational Process Stationary Test (Alpha Sector)

At the end of Autocall press status as In Progress (Msg which is popped up)

Press OK for Auto DRM/DRX upload prompt which is popped up & wait for upload to finish.

After the upload is done for Stationary 1 test, it will prompt for Do you want to perform Stationary 2. Now go for stationary 2(Beta sector) test.

SCFT Tool Operational Process Stationary Test (BETA Sector)

Now move to Beta Sector and latch to Beta sector PCI.

Press OK in handset for Do you want to perform stationary 2 prompt.

Next under Autocall press Start in main window (other setting remains same as in Stationary 1) & repeat the procedure as done in Stationary 1 test from Auto call Start up-till file upload, make sure the Cycle remains the same.

Press In Progress after end of auto call in beta sector and then press Ok for Do you want to upload right now prompt.

SCFT Tool Operational Process Stationary Test( Gamma Sector)

Now proceed for Gamma sector, latch to Gamma Sector PCI for Stationary-3 test and repeat the process as done in Beta sector.

The difference here being that when the test ends the file upload status should

be selected as Complete instead of In progress which was done while in alpha and beta sectors.

SCFT Tool Operational Process Moving Test

Under Moving test, follow the under mentioned steps in both handsets as

depicted.( this step is same as done in stationary test)


Select GPS in both handsets as was done in stationary mode. ( this step is same as done in stationary test)

After selecting GPS, download name of the Cluster by pressing Down on both handsets. After pressing Down, name of cluster (MUMB-0179 here) in which the Lat/long is lying shall pop up, select it. ( this step is same as done in

stationary test)


In both handsets Press Setting in main window and press Select type as SCFT and then Test type as Moving and then under Site select name of the site and Cycle number and press Save. (CYCLE should remain the same until the complete SCFT test (STATIONARY & MOVING) ends). if you have to restart the test cause of any issue then issue new and different cycle number, but it should be same for stationary and moving test (ideally it should be incremented by 1, every time you repeat the test on same site), cycle is a reference for the log files.

Press Setting in main window and press Select type as SCFT and then Test type as Moving


Under Site select name of the site

Press Cycle number and press Save


Press DTDL in one and DTUL in other handset respectively and then press OK for DTDL/DTUL change scenario on both handsets.

Press Start under Autocall in both handsets. Check the traffic should get started on both handset .


Now do walk test around the site from to confirm inter sector handover from Gama

to Alpha, Alpha to Beta, Beta to Gamma and then reverse from Gamma to Beta,

Beta to Alpha, and Alpha to Gamma & then continue the drive in CAR from Gama to

Alpha, Alpha to Beta, Beta to Gamma and then reverse from Gamma to Beta, Beta

to Alpha, and Alpha to Gamma, once inter sector handover are confirmed

then continue the drive for Coverage footprint of each sector by driving all roads

within the Best Server Plot of the site and additional only 1 road drive in each sector connecting SCFT and Neighbor site beyond Best server plot is to be done

until a handover happens.

Press Auto call Stop after completion of device on both handset and Press "Complete under select.

Press Auto DRM/DRX Upload button which is popped up in both handset & wait for respective uploads to finish only then move from the site.

New features added..logging file size

Logging file size can be configured....

NOTE : The size must be set to

50MB (Mandatory), Latest XCAL

ver. will automatically start new

files after 50MB.

If you dont set it right, there will be re-test request as logs of

improper size will cause pre-

processing issues

New features added..log Upload - Manual

After every test scenario whenever this is prompt to upload Logs upload it

Press OK for Auto DRM/DRX upload prompt which is popped up & wait for upload to finish.

This will automatically upload the logs after every test scenario.

Instead of pressing Ok if you choose to cancel or mistakenly press cancel then you need to upload logs manually as explain next slide

New features added..log Upload - Manual

Uploading of logs can be two ways : Manual

If you missed or choose to not to upload logs auto when

there was a prompt every time then upload manually

Press Log Upload button and it will show list of logs

pending to be uploaded

Select the logs to be uploaded based on date &timestamp

Upon uploading the logs the file names will disappear

from pending list

NOTE : Cycle is very important in order to distinguish logs

Unless mentioned by RF Optimizer or RF lead never change

cycle number. It should be always 1 for all the log files /

test scenarios for one round on any given day. Only when

you are requested to do second round another or other day

you will be asked to change cycle number to 2 by your

RF optimizer otherwise dont change

New features added..log Upload - Automatic

Uploading of logs can be two ways : Manual or Automatic.

NOTE : The size must be set to

50MB (Mandatory), Latest XCAL

ver. will automatically start new

files after 50MB.

If you dont set it right, there will be re-test request as logs of

improper size will cause pre-

processing issues

New features added..FTP server selection

Manual selection of FTP server possible..

New features added..VOLTE dialed call

Manual selection of dialed number possible..

SCFT -S4 Mini - troubleshooting Guide

No Network service on Handset

1) No network service on S4-Mini handset

Observed Issue:

As shown in picture below though we are able to see our network parameters

being received by the S4-Mini handset, the handset is not registering to the LTE

network.

No Network service on Handset

1) No network service on S4-Mini handset

Root Cause:

As shown in picture below the Mobile data or Data roaming settings was unchecked under Mobile networks settings.

No VoLTE service status on S4-Mini handset

2) No VoLTE service status on S4-Mini handset

Observed Issue:

As shown in picture below, though we are able to see data services are active, no

VoLTE service is being observed. The internet & FTP session are running fine as

shown. When VoLTE call is made it shows mobile network not available.

No VoLTE service status on S4-Mini handset

2) No VoLTE service status on S4-Mini handset

Root Cause:

As shown in picture below, problem was caused due to change in PDN preference settings. Here Enable Internet PDN was unchecked. Please restart the phone after checking the Enable Internet PDN.

Any change to the VoLTE configuration apart from above element, can cause

this type of problem.

XCAL-Mobile Software (Not XCAL-Auto Call) doesnt start

3) XCAL-Mobile Software (Not XCAL-Auto Call) doesnt start

Observed Issue:

XCAL-Mobile (Not XCAL-Auto Call) stops after showing message as License Error (UE time setting must be automatic)

XCAL-Mobile Software (Not XCAL-Auto Call) doesnt start

3) XCAL-Mobile Software (Not XCAL-Auto Call) doesnt start

Root Cause:

This was caused since the Automatic date & time was unchecked in date & time settings.

FTP DTUL failed on Handset

4) FTP DTUL failed on Handset

Observed Issue:

FTP DTUL call failed on a particular handset.

FTP DTUL failed on Handset

4) FTP DTUL failed on Handset

Root Cause:

As shown below, the FTP URL in which file is going to be uploaded, does not

change as per FMS server settings. This caused FTP traffic failure on the slave

handset.

This issue could be due to XCAL-Auto Mobile Version mismatch or old version

being used on slave handset as shown, since after upgrading the XCAL

version, the issue got resolved.

Not able to download scenario

Unable to download Stationary or Moving scenario

check the FTP server connectivity in your phones, check the IP address, user id and password and server path as shown below.

5) Not able to download Stationary or Moving scenario.

Observed Issue:

Root Cause:

Important Notes

Sector Swap Verification

After Physical site parameter verification, conduct drive test in clock wise and anti-clock wise direction to identify any sector swap

If found, take corrective action before going for coverage drive test

If service-direction of PCID has changed, Data Throughput degradation and Handover Fail can be observed

Sector Swap / Call drop: During Stationary test , Engineer must verify correct PCI for every sector, This can be done by checking the Changed PCI per sector and matching it will DTR or Cell Ref file provided to him by RF Lead.

During clockwise and anticlockwise moving test if there is call drop &PCI is changed after call drop then redo the clockwise/anticlockwise loop if call drop occurs again. Dont proceed with SCFT & report to RF Lead

SCFT Parameter Requirements

Min Average Max

DL Throughput 2 Mbps 20 Mbps 40 Mbps

UL Throughput 256 Kbps 1Mbps 4 Mbps

RSRP -108 dBm -- --

SINR 20 dB -- --

Legend

Throughputs for Moving in Worst condition shouldnt go below min. as per following table when RSRP = -108dbm and SINR = 20db Please note Throughput should be better when RSRP and SINR is better * Above table is just for reference for worst condition only

Summary

eNB physical check involves checking azimuth (note free range), tilt, antenna height, tower height

SCFT consists of stationary and moving tests

Stationary tests include ping, UL & DL throughput and VoLTE connectivity check

Drive around the site clockwise & anti-clockwise for moving tests

Especially check for sector swap using PCI

Ensure RSRP, throughput and SINR ranges are met

Quiz

Average DL throughput should be at least ____

4 Mbps

20 Mbps

40 Mbps

Sector swap can be identified based on

PCI

RSRP

VSWR

Moving test in SCFT does not include

FTP

VoLTE

Either

Work Flow Management for SCFT

Introduction to Work Order Assignment Management

Work Order Assignment Management is also known as WAS.

WAS is going to help users in automating the Work Order(WO) flow in a systematic manner using a portal called SITEFORGE.

Using this portal each level of Management employees will receive and execute their WO or Task assigned to them.

Helps to trace the network status through online mode.

Provides Visual steps to guide users on progress and upcoming steps.

Improves productivity & complete visibility.

Helps users to monitor Parameter Compliance Index(Planned Vs. Actual).

Helps users to Search/Filter Sites & WO based on various parameters.

Network Lifecycle Management Flow for SCFT

(Work Allocation System)

Work Flow Management for SCFT

Samsung CH assigns the WO to respective Samsung Area Manager (AM)

AM Splits WO into tasks & assigns SCFT task to

respective Solpar PM as per the area.

SOLPAR PM Assigns of SCFT Task to SOLPAR field eng

Responsibility: GIS/SIITE FORGE; Notification: Samsung CH

Notification:Samsung AM, RJIL CTO

Notification: Samsung CH, SOLPAR PM

Notification : Samsung Area Manager, Sasmsung RF lead, RJIL RF lead, SOLPAR FE

Notification: Samsung -CH

Notification: Samsung AM, Samsung RF Lead, Samsung CH, RJIO CTO.

RFI report submit Trigger from GIS & WO Issued to Samsung Circle Head (CH)

Samsung Optimization

engineer.

Notification:Samsung AM, Samsung RF Lead, Samsung CH, RJIO CTO, RJIL RF lead

SOLPAR FE Does the SCFT test in accordance with SCFT Test Procedure and update the

siteforge server if any parameter updates are done for the site.

Notification: Solpar PM, Samsung RF Lead

Samsung Optimization

team Validates the SCFT

report(Accept/Reject)

RJIL CTO Validates

SCFT report

Task closure in SITEFORGE

All tasks (ATP11A, ATP11B, SCFT & EMF) completed, WO closure Responsibility: RJIL

Circle CTO / GIS / System Notification RJIL Circle CTO, GIS

Start

End

Accept/Reject(if SOLFE is needed to be involved Accept

Rej

ect

Accept R

ejec

t

SCFT procedure on Site Forge (WAS)

CH - Login

Circle Head can login by entering his user name & password here

CH Dashboard, Sites

CH has logged in & he is able to view dashboard which overview of Site details

Site details are available here

Filters are available here to extract data

CH Sites

Click here to know details of that particular site

Siite summary,RAN,Inventory,Trasnport,Phtos,Regulatory & Documents can be viewed here

CH Work Orders , Sign out

CH has to click here to Assign or Re-assign WO to AM

CH has to click here to Assign or Re-assign WO to AM

Select AM from drop down

Option to Sign Out

AM Login, Dashboard

AM can login by entering username & Password here

AM can view dashboard here

AM has logged in here

AM Sites

List of sites are displayed here

Filters can be accessed here

Reports can be downloaded here by AM

AM Work Orders

List of Work Orders are displayed here

Filters can be accessed here

Click here to assign or re-assign Samsung engineer

After assigning engineers from drop down Click here

AM Work Orders. Click here to see the list of tasks available

Click here to assign the task to SOLPAR PM

Assign task start/Finish dates and select SOLPAR PM from drop down

SOLPAR PM- Sign In, Sites

SOLPAR PM logs in by entering User name & Password

SOLPAR PM has logged in

Filters for accessing data

Sites information can be accessed here

SOLPAR PM- Sites

By clicking on particular site SOLPM will be able to see details of that site

SOLPAR PM- Tasks

List of tasks are displayed here

Click here to assign the task to SOLPAR FE(DT Engineer)

select responsible SOLPAR FE(DT engineer)from dropdown

SOLPAR FE(DT Engineer) Sign In , Sites

SOLPAR FE(DT Engineer)logs in with his user name & Password

SOLPAR FE (DT engineer)has logged in here List of sites to be

handled can be viewed here

Filters are available Here

SOLPAR FE(DT Engineer) Tasks

FE has to click here to complete task Perform SCFT

Click here to edit any parameters value if DT has changed during SCFT


After Editing the parameter FE has to save here


Parameter Changes can be viewed by clicking here

SOLPAR FE(DT Engineer) Tasks , Sign out

By clicking here FE will be able to see Reject reason of SCFT report

Option to sign out

Samsung Optimizer Sign In , Sites

Samsung Optimizer logs in here

Samsung Optimizer views list of sites

Samsung Optimizer Sites

When he clicks on particular site he will be able to see Site summary & Etc.


RAN details are displayed here Inventory

details are displayed here

Transport details are displayed here

Site photos are displayed here


Regulatory details are displayed here

Site documents are displayed here

Site documents can be uploaded here(if any)

Samsung Optimizer Tasks

List of tasks to be handled are displayed here Task status

is displayed here

Click here to know the reason for rejection

Parameter changes info can be seen here

Samsung Optimizer Sign Out

Samsung Optimizer can sign out here

Accelerating the SCFT

Process change recommendation

KPI Failure rate during SCFT

SCFT KPI Fail Reason KPI Fail %

VoLTE/Attach Success (6) Stationary Test Fail 20.9%

Handover (6) Handover Fail (No Attempt, HO Fail)

19.0%

Coverage Object Met (3)

Azimuth Mismatching 13.5%

BSP Mismatching 6.6%

Coverage Objective Fail. 16.7%

Missing Route 20.4%

Sector Swap (3) Crossed Feeder or CPRI cable 2.9%

Total 100%

20.9%

19.0%

13.5%

6.6%

16.7%

20.4%

2.9%

VoLTE/Attach Success Stationary Test Fail

Handover Handover Fail (No Attempt)

Coverage Object Met Azimuth Mismatching

Coverage Object Met BSP Mismatching

Coverage Object Met Coverage Objective Fail.

Coverage Object Met Missing Route

Sector Swap Crossed Feeder or CPRI cable

SCFT Process

SCFT Site Survey

[ SOLPAR ] [ SAMSUNG ]

Ant.Para Mismatch

Stationary Test

No

Yes

Report Verify

Make SCFT DTR

[ Circle RF Lead]

SCFT Drive Test

Make Cellref File & BSP

Change Ant. Para

Handover Test

Log file Upload

ActixOne

SiteForge

Report Submit

FMS

[ Automation System ]

Yes

No

Provide updated Cellref file & BSP to RF lead every week

Provide SCFT DTR (Map & Ant. Info) to SOLPAR team

Order Rework (Physical para., Station, Handover, Drive Test)

Provide Fail Reason

PA2

PA3

PA4,7

PA6,8

PA2 Azimuth Correction at Site

Samsung (Circle RF Team) NOPT Cellref Eng.

SOLPAR Rigger RF Lead

Submit SCFT Site Survey Check List to Samsung RF lead


Make DTR with Cellref file & BSP


Check Ant. Para with DTR on site

If mismatch, Change Ant. Para according to value

of Cellref

Submit SCFT Site Survey Check List to NOPT engineer

Make Cellref file & BSP (Ant. Para matching with

ATP11A

PA2 Azimuth Correction at Site

How to make SCFT DTR. 1. Circle RF Lead needs BSP(Best Server Plot) and Cellref . - Cellref file is provided by National Optimization team. - BSP(Best Server Plot) is provided by National RF Validation team. 2. Circle RF Lead can prepare SCFT DTR by using Google Earth, MapInfo or Manually (refer figure-5). 3. Provide the SCFT DTR to Solpar Field Engineer, to start the SCFT test. SCFT DTR do not need to upload to FMS.

[Figure-1. Sample SCFT DTR using Google Earth program]

Samsung (Circle RF Team) SOLPAR Field Eng. RF Lead

Check Inter Sector

Neighbor List

Confirm Neighbor List

Handover Test

PA3 Handover Testing Process

LSMR

If missing neighbor, Add neighbor in each sector

Confirm Neighbor List

Check Neighbor List

- Do Handover test before SCFT Drive test. - First take a clockwise drive. Start from Alpha to Beta, Beta to Gamma, Gamma back to Alpha. - Then take a anticlockwise drive. Start from Alpha to

Gamma, Gamma to Beta, Beta back to Alpha. Clockwise : Alpha -> Beta -> Gamma-> Alpha Anti-Clockwise : Alpha -> Gamma -> Beta -> Alpha

- Observe the target PCI change without Call Drop. If the PCI is changed after call drop, then try to HO again. - If call drop happened again and again, then DO NOT EXECUTE SCFT and feedback to Samsung RF Lead immediately.

NOPT Cellref Eng.

PA3 Handover Testing Process

How to do HO Test : 1. Refer to figure-3, Do Handover test as shown. Start from Alpha sector. Blue route: Clockwise test route. Red route: Anticlockwise test route. Clockwise : Alpha -> Beta -> Gamma-> Alpha Anti-Clockwise : Alpha -> Gamma -> Beta -> Alpha

2. If HO not happened during test then try it again.

Map with the first tier neighbor

Alpha

Beta

Gamma

[Figure-2. Clockwise / Anti-clockwise Handover Route ]

Clockwise

Anti-Clockwise

PA4 Drive Route Process

Samsung (Circle RF Team) RF Lead

Submit missing road with photo or comment to RF lead



ATP11A



Drive Test according to DTR

- Tracking and compare the Driven Route with provided SCFT DTR during SCFT Drive Test. If any DT Route is non motorable, then take photo and provide it to Samsung RF Lead with comment. - Drive all the roads as per SCFT DTR provided. - Drive all the roads in main lobe of serving sector.

Submit missing road with photo or comment to NOPT engineer

NOPT Cellref Eng.

SOLPAR Field Eng.

PA4 Drive Route Process

How to make SCFT DTR. 1. Circle RF Lead needs BSP(Best Server Plot) and Cellref . - Cellref file is provided by National Optimization team. - BSP(Best Server Plot) is provided by National RF Validation team. 2. Circle RF Lead can prepare SCFT DTR by using Google Earth, MapInfo or Manually (refer figure-5). 3. Provide the SCFT DTR to Solpar Field Engineer, to start the SCFT test. SCFT DTR do not need to upload to FMS.

[Figure-3. Sample SCFT DTR using Google Earth program]

PA6 Sector Swap Confirmation Process


Report CPRI cable changing status on Site Survey Check List



ATP11A



Stationary Test If sector swapped,

Change CPRI cable of swapped secoters

NOPT Cellref Eng.

- Go to stationary point in main lobe of antenna and check PCI. - Compare the detected PCI with provided PCI (SCFT DTR) - For swap between sectors, change the CPRI cable of swapped sectors. - Check PCIs before start the SCFT for all three sectors again and if OK then proceed for SCFT Drive Test.

Submit SCFT Site Survey Check List to NOPT engineer

SOLPAR Field Eng.



Alpha

Beta Gamma

[Figure-4. Stationary Test Point]

How can check Sector Swap

1. Choose Stationary Point in the main lobe of antenna.

2. Check that you get only one PCI assigned to test sector.

- eg. For figure shown, you must get PCI 9 for alpha sector.

If you get 10 PCI then that is sector swap.

- In this case you have to change CPRI cable to correct

the swap. (Alpha PCI 9 CPRI Beta PCI 10 CPRI).

3. Repeat the above procedure for remaining sectors as well.


Alpha

How to change CPRI Cable 1. The Engineer must carry with him site keys for easy access. 2. Change the CPRI cables at DU to correct the swap. 3. Correct the labeling of CPRI cable after the change. 4. The color code is as shown in picture.

Alpha-Blue. Beta - Red. Gamma-Green.

Beta

Gamma

[Figure-5. DU CPRI Cable Position]

PA7 Throughput Confirmation


Check Backhaul & Alarm Status

Provide eNB Health Status

Drive Test

LSMR

Check Backhaul & Alarm Status. If any issue, Report

related team

Confirm eNB Health Status

Check eNB Health Status

NOPT Cellref Eng.

- DL/UL Throughput by Speedtest.net (App.) before test - During drive test if low throughput value is observed, then stop DT and restart the test. - During DT observe the DL/UL throughput changes all the time. - If the low DL or UL T-put is observed during SCFT even though signal condition is good and PCI value is correct then stop the SCFT and make the call again. If issue still persist, contact LMSR engineer.

DL THR : Min. 20 Mbps / UL THR Mim 1 Mbps

Check eNB Health Status

Confirm eNB Health Status

SOLPAR Field Eng.

PA8 Stationary Test


If VoLTE call fail, report to RF Lead with symptom



ATP11A

Make DTR with Cellref file & BSP Every morning, before field team start test, get confirmation from RJIL circle

team that VoLTE is working or not.

Provide SCFT DTR (Map & Ant. Info) to SOLPAR team & VoLTE Call Health Stauts

Stationary Test (UE Attach/VoLTE call

setup)

NOPT Cellref Eng.

- Go to stationary point in main lobe of antenna and check PCI. (Have to check only one PCI assigned to test sector.) Many field team move from sector to sector for stationary test, but the PCI change dont happen and they do not notice it. - Compare the detected PCI with provided PCI (SCFT DTR). - Perform the VoLTE call test. - If VoLTE call fail, report to Samsung RF lead with symptom

Raise the issue to Samsung EPC team(DP) in that circle --> RJIL

manager in that circle --> IMS team

SOLPAR Field Eng.

PA8 Stationary Test

Stationary Test 1. Choose Stationary Point in the main lobe of antenna. 2. Check that you get only one PCI assigned to test sector. - Many field team move from sector to sector for stationary test, but the PCI change dont happen and they do not notice it. 3. Repeat the above procedure for remaining sectors as well


Alpha

Beta

Gamma

[Figure-5. Stationary Test Point]

Summary

Work Order Assignment Management is also called as WAS.

AM receives SCFT trigger once ATP11B process is completed.

AM assigns SCFT Task to Samsung Optimizer & Samsung RF Head.

AM distributes(assigns) Perform SCFT Task to SOLPAR PM.

SOLPAR PM will further assign Perform SCFT task to SOLPAR FE(DT Engineer).

SOLPAR FE has to accept this task from SOLPAR PM and follow below steps.

a)SOLPAR FE will conduct SCFT task using Mobile device(eg:S4 Mini) to complete and upload test data to FMS server(separate process)

b)SOLPAR FE will input parameter changes(if any) to siteforge server and submits it for Samsung Optimizer approval.

Samsung Optimizer will accept or reject according SCFT test data available in FMS server and flow continues.

Overall WAS Improves productivity & complete visibility.

QUIZ

Question 1:

Who will assign SCFT Task to Samsung RF head ?

Ans:

Samsung Area Manager

Question 2:

Who will assign perform SCFT task to DT Engineer?

Answer:

PM(SOLPAR)

Question 3:

Whether Samsung RF head can reject approved SCFT data by Samsung Optimizer?

Answer:

A) Yes

B) No

Thank You