HPR4441: Voice Over IP

Voice over Internet Protocol (VoIP), also known as IP telephony,
is a set of technologies used primarily for voice communication
sessions over Internet Protocol (IP) networks, such as the
Internet. VoIP enables voice calls to be transmitted as data
packets, facilitating various methods of voice communication.



Voice over IP -
https://en.wikipedia.org/wiki/Voice_over_IP


Plain Old Telephone System (POTS) -
https://en.wikipedia.org/wiki/Plain_old_telephone_service


Retirement of circuit-switched public switched telephone network
(in the UK) -
https://en.wikipedia.org/wiki/Telephony_copper_plant_retirement_in_the_United_Kingdom


Session Initiation Protocol (SIP) -
https://www.ietf.org/rfc/rfc3261.txt


Network Address Translator (NAT) -
https://datatracker.ietf.org/doc/html/rfc2663


Session Traversal Utilities for NAT (STUN) -
https://datatracker.ietf.org/doc/html/rfc5389


Voice over IP Companies -
https://en.wikipedia.org/wiki/List_of_VoIP_companies


Voice over IP Hacking -
https://en.wikipedia.org/wiki/VoIP_vulnerabilities