Together at the Top

Customer Success Stories

Use Cases

Mobile Network Operators

Featured Success Stories

Colorful Phone Cases

Device Validation

EUROPEAN MOBILE OPERATOR - DEVICE ACCEPTANCE TEAM

CHALLENGES:

  • Company restructuring resulting in reduced manpower

  • Increased workload with introduction of new technology like VoLTE

  • Ensuring repeatability and consistency of the testing

SOLUTION:

  • Set up viSer full test automation to test all key use cases like Call performance, voice quality, Data performance, Battery life measurement, VoLTE, VoWiFi 

  • Viser audio MOS add on option

RESULTS:

  • Increased Test Efficiency

  • Achieved reduction of time 75%

  • Achived ROI 40%

 

Field Testing

EUROPEAN MOBILE OPERATOR - DEVICE ACCEPTANCE TEAM

CHALLENGES:

  • Covid-19 social distancing restrictions meaning no more than one person in a car while testing

  • General Safety when one person had to carry out field testing while driving

SOLUTION:

  • ViSer full test automation to test all key use cases like Call Performance, Voice Quality, Data performance, handovers
    Test Scripts creation with required conditions to ensure testing starts is specific Cell ID, RAT, IMS Reg Status etc

RESULTS:

  • Increased employee safety 

  • Reduced Test times 

  • Adhered to guidelines regarding social distancing.

  • Part of business continuity and process improvement

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Network Monitoring

EUROPEAN MOBILE OPERATOR - DEVICE ACCEPTANCE TEAM

CHALLENGES:

  • Complex set up of Network Monitoring in place that does not allow update of test cases

  • Looking to test with most popular devices in the market/ What their end users are using

SOLUTION:

  • ViSer full test automation to test  Call, Messages, Data transfer, browsing fluidity,.
    Alerts generated by viser to an email address when a test case failed twice.

  • Commercial end user devices used

RESULTS:

  • Easy to update test scenarios 

  • Already using viSer so the cost of the set up was 1/10 of the existing system upgrade

  • Portable to use in any location needed to monitor performance 
     

 

SIM Testing

EUROPEAN MOBILE OPERATOR - DEVICE ACCEPTANCE TEAM

CHALLENGES:

  • Complex set up testing manually 40 different SIM cards with 40 devices to check all provisions works correctly

  • Frequent mistakes managing all devices 
     

SOLUTION:

  • Smartboard hardware device that can support 10 different SIM cards connected to one device with a flex cable
    Python controlled

  • viSer set up to automate testing on each individual SIM card

RESULTS:

  • Fully automated reducing the need for technical staff to monitor and test

  • Only 4 devices are required reducing cost and risk of devices failure

  • Time savings of 90%

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Troubleshooting

EUROPEAN MOBILE OPERATOR - DEVICE ACCEPTANCE TEAM

CHALLENGES:

  • Issues with certain devices having a large number of call drops

  • Communication difficulties with OEMs 

  • Time consuming investigations for device acceptance teams and Core Network Teams
     

SOLUTION:

  • viSer Test Automation with embedded scenario creation so tester can easily create test scripts
    Replay function to trigger OEMs logging prior to testing and save log afterwards

  • VWS access and option to share results with OEMS

  • VWS comparison reports
     

RESULTS:

  • Time saving of around 60%

  • Report sharing with OEMs who can easily see benchmark results against other networks

  • Technical teams can focus on other tasks

 

Enterprise

EUROPEAN MOBILE OPERATOR - DEVICE ACCEPTANCE TEAM

CHALLENGES:

  • Enterprise teams needing some benchmark data when they recommend devices to enterprise customers based on their needs

  • Information collection difficult as Device Acceptance teams don’t collect this information

SOLUTION:

  •  viSer Test Automation with Test Plans that measure Performance, Battery Current Consumption, Fluidity/Reliability

  • Reports in excel format were the results are plotted automatically once they are pulled from the device

RESULTS:

  • Bespoke database with all devices in one documents

  • Easy comparisons on weakness and strengths on each device.

  • Enterprise recommendations based on needs, speed, battery performance etc

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Audio MOS

EUROPEAN MOBILE OPERATOR - DEVICE ACCEPTANCE TEAM

CHALLENGES:

  • Audio MOS to be tested in any device

  • Option for Android & iOS

  • End to end option

SOLUTION:

  • viSer Test Automation with Audio MOS add on option.

  • UL/DL/End to End

  • POLQA algorithm MOS score

  • MOS score average per call and intermediate every 8sec

  • Recorded sample and reference sample available to replay at VWS

RESULTS:

  • Part of Device Acceptance team testing

  • Failing manufacturers have been improving their devices which means enhanced QoE for their end users.

  • Due to the success of trial phase roll out compulsory Audio MOS test for all OEMS (01/10/2020)

 

Lab Set Up

EUROPEAN MOBILE OPERATOR - DEVICE ACCEPTANCE TEAM

CHALLENGES:

  • Ability to add automation to control emulators and network simulators (Reverb chamber set ups)

  • Increase test efficiency

  • 5G Introduction adding more workload

SOLUTION:

  • viSer Test Automation to perform a number of user actions Calls, Messages, Streaming, FTP UL/DL

  • Synchroviser/ PC orchestrator tool to acts as a scheduler to drive the DUT and external parts

RESULTS:

  • Achieved coverage of 90% of test cases now automated

  • Continued testing 24/7

  • Allowed staff to focus on release of new technology

Image by National Cancer Institute
 
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Roaming Testing

EUROPEAN MOBILE OPERATOR - DEVICE ACCEPTANCE TEAM

CHALLENGES:

  • Ability to perform roaming testing in key markets

  • Pricey to employ or send technical engineers to perform periodical testing

SOLUTION:

  • viSer Test Automation to perform a number of user actions Calls, Messages, Streaming, FTP UL/DL

  • Remote Control

  • Devices located in customers offices overseas

RESULTS:

  • Ability to perform testing at any time in any geographical location without the need of local staff support

  • Helped test new billing systems while roaming before being rolled out.

  • Cost effective

 

Private Networks

EUROPEAN MOBILE OPERATOR - DEVICE ACCEPTANCE TEAM

CHALLENGES:

  • Ability to test enterprise Private Networks before deployment

  • Network Monitoring

SOLUTION:

  • viSer Test Automation to perform several user actions Calls, Messages, Streaming, FTP UL/DL

  • Remote Control

  • Devices located in customers offices for continuous network monitoring

RESULTS:

  • Easy usage generation to effectively test before launch.

  • Issues identified early ensuring reducing customer complaints

  • Evidence on record performance in case of complaints from customers

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