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With the traditional VoIP stacks, yes. There are two components to making phone calls: messaging and media. The messaging part sets up and tears down calls. The

With the traditional VoIP stacks, yes. There are two components to making phone calls: messaging and media. The messaging part sets up and tears down calls. The media part passes the audio. I'd imagine they're doing the same.

dkhenry 14y ago
but typically you use something that can have at least some intelegent behaviour like RTP not UDP. Why did they choose that when literally every other pure VoIP service uses RTP ?
- moxie 14y ago
  We use RTP (actually SRTP and ZRTP), but the transport is still UDP.