IP PBX: ARCHITECTURE AND PROTOCOLS

Abstract- Wireless communication plays a vital role in day to day life. Voice over IP (VoIP) is one of the most exciting new developments emerging within the telephony market. Wireless VoIP utilizes wireless LAN technology, the same wireless infrastructure used for the corporate network, in order to communicate. Traditional PBX systems can be replaced by IP PBX system in a cost effective way. Wireless IP phones can be used to access corporate telephony system as this technology combines the telephony function directly into an already existing data network infrastructure. This paper discusses the working and principle of wireless IP telephony.