Voice Over Internet Protocol (VoIP)

Glossary

ITSP - internet telephony service provider. A company that offers cheap phone calls that run over the internet.

PBX - Private Branch Exchange. A phone system that connects a company to the public telephone network.

SIP - Session Initiation Protocol. SIP is an emerging IP telephony standard that is being enthusiastically endorsed by the VoIP industry.

USB - Universal Serial Bus. An interface standard for connecting devices such as digital cameras to computers.

VoIP - Voice over Internet Protocol, enables businesses to make phone calls across computer networks. Also known as Internet Protocol telephony and IP telephony.