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4z.com — Migration to the New VoIP Platform


Progress on development and testing of new infrastructure

29.10.2026

Dear customers,

We are currently completing the development and testing of our new VoIP infrastructure. This migration involves replacing the existing billing and call management systems, integrating new telecommunications providers, strengthening security, and preparing the automatic transition of customer accounts.

Below is an update on our progress. We will do our best to keep this page regularly updated as the migration advances.

 

Completed

  • Deployment and initial configuration of the new VoIP platform
  • Installation and configuration of the new call processing infrastructure
  • Configuration and successful testing of SIP account registration
  • Integration and initial testing of outgoing call routing through multiple providers
  • Configuration and testing of incoming and outgoing call handling
  • Preparation, comparison, testing and setup of international call rates across multiple providers
  • Development of new routing and pricing rules
  • Initial configuration of server and SIP security protections
  • Development, setup, testing and debugging of the anti-fraud system
  • Server stress test with a large number of simultaneous calls passed
  • Products developed
  • Types of accounts simplified
  • Free destinations setup tested and correct billing confirmed
  • Test infrastructure reinstalled from scratch
  • Debugging done, redocumented
  • Additional GUI setup included
  • Test accounts automatic migration passed
  • Testing of the new infrastructure under simulated customer traffic.
  • Mailing customers done

 

In progress and planned

  • Finalization of customer account and balance migration
  • Final verification of call rates and billing accuracy
  • Testing of simultaneous registrations and incoming calls across multiple devices
  • Optimization of call routing and compatibility with providers
  • Preparation for the gradual migration of SIP accounts
  • Migration and testing of a small initial group of SIP accounts
  • If successful, gradual migration of all remaining SIP accounts
  • Monitoring, verification and debugging