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The PSTN is frozen-in-time: despite SIP and fancy intra-3G/4G/5G tech everything else is built around Signalling System 7 from 1975: https://en.wikipedia.org/wi
by DaiPlusPlus 5y ago
The PSTN is frozen-in-time: despite SIP and fancy intra-3G/4G/5G tech everything else is built around Signalling System 7 from 1975: https://en.wikipedia.org/wiki/Signalling_System_No._7 https://en.wikipedia.org/wiki/Signalling_System_No._7