Knowledge base VoIP: terminology and definitions
VoIP stands for Voice over Internet Protocol and is the term by which the transport of speech over the IP network is indicated. VoIP telephony is also called IP telephony or cloud telephony.
SIP stands for Session Initiation Protocol and is a protocol to set up, maintain and end VOIP conversations.
PSTN stands for Public Switched Telephone Network and is the concentration of public telephone networks all over the world. This network consists of POTS (analogue telephony) and ISDN (form of digital telephony).
ISDN stands for Integrated Services Digital Network and is the digital telephone connection with the end user. With ISDN connection, a single connection can have multiple channels.
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