Voice over Internet Protocol

From LinuxReviews
Jump to navigationJump to search

Voice over Internet Protocol (VoIP) is a very wide term for a range of transmission technologies for delivery of voice communications over IP networks.

Other terms frequently encountered and synonymous with VoIP are IP telephony, Internet telephony, voice over broadband (VoBB), broadband telephony, and broadband phone.

The plain old telephone network

VoIP systems usually interface with the traditional public switched telephone network (PSTN) to allow for transparent phone communications worldwide.

The standards

SIP and IAX2 are the most commonly used standards.

Community standards

The SipBroker VOIP catalog has become somewhat of a standard for VOIP-provider to VOIP-provider calls.


Asterisk is the most popular PBX software for GNU systems.