IP-PBX - Definition
In the field of telecommunications, a telephone exchange or telephone switch is a system of electronic components that connects telephone calls.
A Private Branch eXchange (PBX) is a telephone exchange that serves a particular business or office, as opposed to one that a common carrier or telephone company operates for many businesses or for the general public.
An IP-PBX is a PBX that is based on the IP Protocol for the connection between the system components: The Call Server; The Media Gateways; The IP-Phones and the VoIP Applications. The IP-PBX usually controls the different components using a standard control protocol such as SIP, MGCP or MEGACO/H.248.
IP-PBX - Synonyms
IP-PBX; IP Telephony Call Server