Topic

Voice

VoIP, codecs and trunk sizing.

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VoIP That Sounds Right How much bandwidth a call really uses, which codec to pick, how many trunks you need (Erlang), and what ruins quality. ≈ 11 min read →

3 tools

VoIP Bandwidth

Calculate per-call and total bandwidth by codec, packetization and layer-2 overhead.

Erlang Calculator

Estimate trunks (Erlang B, blocking) or call-center agents (Erlang C, service level) from traffic in Erlangs.

Voice Codecs

Compare voice codecs (G.711, G.729, Opus, AMR-WB…) by bitrate, MOS quality, sampling and delay, and compute IP bandwidth per call from codec and packetization.