- 2074 Magh · 2+2 marks
VoIP and IP interconnection definitions
Short answer
VoIP carries voice as digital IP packets instead of circuit-switched PSTN. IP interconnection links different operators' IP networks through peering or transit at IXPs under technical, commercial and legal terms. Examples include Skype and SIP phones.
What are VoIP and IP interconnection?
VoIP (Voice over Internet Protocol) is the technology that carries voice calls as digital packets over an IP network (internet or private IP network) instead of the circuit-switched telephone network (PSTN). Voice is digitised, compressed, put into IP packets and sent, and rebuilt at the receiver. Examples: Skype, WhatsApp calls, SIP phones.
IP Interconnection (IPI) is the physical and logical connection of IP networks of different operators (ISPs, telecom operators, content providers) so that their users can exchange traffic. It takes place at an Internet Exchange Point (IXP) or by direct peering/transit agreements, and covers the technical, commercial (settlement) and legal terms for exchanging packets and voice (including VoIP traffic to and from PSTN).
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