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Swisscom delivers exceptional HD voice quality with VoLTE


Swisscom, Switzerland’s leading operator, chose EXFO’s VoLTE service assurance solution—Nova Geo for geolocated RF optimization and Nova Explorer for end-to-end troubleshooting—to monitor its network through all phases of deployment. Swisscom continues to count on NOVA to ensure ongoing quality assurance now that its VoLTE service is fully up and running.

Nova helped Swisscom achieve outstanding network performance by:

  • Removing physical cell identity (PCI) clashes
  • Eliminating dropped VoLTE calls in mobility areas
  • Benchmarking VoLTE device performance



EXFO’s VoLTE service assurance solution, consisting of Nova Geo for geolocated RF optimization and Nova Explorer for end-to-end troubleshooting, has been deployed to monitor Swisscom’s network. The solution is being used by Swisscom’s radio and troubleshooting  engineers and an on-site EXFO expert.

EXFO accompanied Swisscom during the pre-VoLTE launch phase with their network preparation (RF optimization and troubleshooting). Now that the service is fully up and running, EXFO’s experts are performing on-going quality performance assessments and optimization tasks, including troubleshooting of VoLTE issues, SRVCC failures or intra-LTE handover errors. They also monitor closely VoLTE subscribers to detect areas with specific VoLTE issues or VoLTE compatible devices that do not perform well.


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