[–] payne92 10y ago ↗ There's a fair amount of work on voice over IP and packet switched networks that predates (by a wide margin) 1994, including connections to the PSTN.For example, see: https://www.ll.mit.edu/news/ieee-milestone-packetspeech.htmlAnd: https://www.researchgate.net/profile/Stephen_Casner/publicat...And: https://qos.ittc.ku.edu/research/thesis/documents/michael_to...etc.
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[ 3.6 ms ] story [ 16.5 ms ] threadFor example, see: https://www.ll.mit.edu/news/ieee-milestone-packetspeech.html
And: https://www.researchgate.net/profile/Stephen_Casner/publicat...
And: https://qos.ittc.ku.edu/research/thesis/documents/michael_to...
etc.