Review paper on point to point communication with the use of power over Ethernet based on VOIP system on asterisk

Nowadays point to point communication have been drawing a lot of interest, because in this it communicate at specific place as per our choice at a time so that all signal will go in one direction which avoid wastage of signal which spread in all direction. ISM (Industrial, Scientific and Medical) band is a part of the radio spectrum that can be used for many purposes without a license. It is also called unlicensed band. Its range is 2.4-2.483Ghz. For good bandwidth and long transmission ranges the unused portion of ISM provides potential for wireless network. White space is a vacant frequency and its device operates only in unoccupied frequency. Indexing of antenna means to give a unique code or ID to each requirement. Conversion of antenna means to send a RF signal from Omni-directional pattern to directional way. VOIP is a voice over internet protocol useful for transmission of voice data over internet. Asterisk is a software package use to do calling, video conference and many features.