Estimate the data volume generated by VoIP media over a selected period using call count, average call duration, and per-call network bitrate. The calculation counts both directions of a full-duplex call, making it useful for traffic-volume planning where total transferred bytes matter rather than just instantaneous link capacity.
Use the result to approximate WAN transfer totals, VPN traffic, cloud voice network usage, or monitoring volumes. The per-call bitrate should represent on-wire traffic for one direction, including relevant protocol overhead. Signaling, retransmissions outside the media stream, recordings, and application traffic are not included unless you account for them separately.
1. Enter daily call volume
Use completed or expected calls per day.
2. Set average duration
Enter the average connected media time in minutes.
3. Enter per-direction bitrate
Use the on-wire kbps for one direction of an active call.
4. Choose the period
Set the number of days to include.
5. Review data usage
The total counts two media directions for each full-duplex call.
The factor of 2 represents two simultaneous media directions. Dividing by 8 converts bits to bytes, and 1,000,000 converts kilobytes to decimal gigabytes.
The result estimates total transferred voice-media data for the entered call workload.
Recordings and call-center application data are separate storage or network workloads and are not included here.
Given: 1,200 calls/day, 4.5 minutes per call, 100 kbps per direction, over 30 days.
Calculation: Total call minutes = 1,200 × 4.5 × 30 = 162,000 minutes. Data = 162,000 × 60 × 100 × 2 ÷ 8 ÷ 1,000,000 = 243 GB.
Result: About 243 GB of bidirectional VoIP media traffic.
A normal VoIP conversation carries media in both directions at the same time. Total transferred data therefore includes both streams.
Only include media time actually established if you are estimating RTP media usage. Signaling-only attempts are not modeled.
No. Recording storage depends on the recording codec, channels, format, retention, and whether calls are recorded at all.
Yes, if it reflects connected talk/media time and the same population represented by the calls-per-day figure.
Bandwidth requirements describe the peak simultaneous transfer rate. Data usage accumulates the transferred volume across all calls and time.