What is PSTN?
The traditional switched telephone network.
The Public Switched Telephone Network is the legacy circuit-switched system that carried calls before IP. Most calls today traverse both: a mobile or landline caller reaches the PSTN, and a gateway hands the call to an IP network for the rest of the journey.
This is an industry glossary. A term defined here is not a statement that Drop AI provides it — see the pricing page for what is included.
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Terms that come up alongside it
Telephony
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