VoIP Bandwidth Calculator

Calculate the network bandwidth needed for VoIP calls based on codec selection, protocol headers, and number of concurrent calls.

Total Bandwidth Required
--
Mbps
Per Call Bandwidth
--
kbps
Codec Bitrate
--
kbps
Overhead per Packet
--
bytes
Packets per Second
--
per call

VoIP Bandwidth Calculation

VoIP bandwidth includes the codec payload plus protocol headers (IP, UDP, RTP, and Layer 2). The actual bandwidth is significantly higher than the codec bitrate due to header overhead.

Total per packet = L2 header + IP(20) + UDP(8) + RTP(12) + Payload
BW per call = Total_bytes * 8 * packets_per_second

Shorter packetization intervals improve voice quality and reduce latency but increase bandwidth usage due to more frequent headers.

Verwandte Rechner

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