What Causes Missing or Duplicate CDRs in VoIP Networks?

Missing or duplicate CDRs are common issues in VoIP environments. Even when calls are completed successfully, inaccurate records can affect billing, reporting, and troubleshooting.

Common Causes

Network interruptions during record transfer, retry mechanisms after temporary failures, synchronization issues between systems, mediation errors, and inconsistent vendor formats can all lead to missing or duplicate CDRs.

Why It Matters

Incomplete records may result in lost revenue, while duplicate CDRs can lead to overbilling and unnecessary disputes. Detecting these issues early helps maintain accurate billing and reliable reporting.

Best Practices

Regularly validate CDRs, monitor file transfers, check mediation logs, and perform routine audits to identify anomalies before they impact downstream systems.

Discussion

What has been the most common reason for missing or duplicate CDRs in your VoIP environment, and how do you detect them?