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WebRTC, SIP and network

Transport determines where media, jitter, codecs and telephony boundaries live.

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Video summary

The ideas to retain

01

Draw the path before choosing an acronym

Architecture discussions often collapse three different planes:

02

WebRTC: the route selected by ICE matters

WebRTC does not assume that two endpoints can send UDP directly to each other. ICE gathers candidates and tests connectivity pairs. RFC 8445 distinguishes host, server-reflexive, and…

03

Why TCP can sound worse even when bandwidth is sufficient

TCP delivers a reliable ordered byte stream. If a segment is lost, later data can wait for the missing segment to be retransmitted. That behavior is usually correct for a download. For…

Key moments

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  1. Topology
  2. Jitter
  3. Transcoding