The wireless technologies cannot be compared because the draw back of one technology is covered by the use of another technology. Hence we can say that each wireless technology like WiMax ,wifi and WiBro all have pros and cons depending on the need of the network. Comparison of the technologies enables us to choose the best option efficient enough to cater our needs.

WiFi products are now an essential part of all the digital devices. Nowadays all devices like laptops, palmtops, smart phones, play stations and other peripherals must contain 802.11 devices in it. From the early 2003 all digital devices come with the wireless network settings.

A successful replacement for wired DSL, this technology has provided the access to internet even in those areas where it was impossible to carry a network of cables and fiber optics. WiMax is a high speed wireless broadband connection which provides a way to connect WiFi hotspots in remote areas to major metropolitan networks in large cities. The widespread deployment of WiMax provides the consumers with a high speed economical connection.

The development in the communication technology has replaced the use of electrical conductors to carry signals. These electrical conductors such as wires are considered to be as an expensive and complicated way of establishing network. The frequent use of wireless technology has helped transform many networks from the wired mode to wireless setup such as wireless LAN. These wireless networks are established using much wireless technology, most commonly they emphasize on what we call as WiFi. WiFi refers to the wireless Fidelity.

VoIP helps to transfer the voice signals to pass through IP network easily. The basic working of the VoIP takes place in two steps. In the first half the analog signals are converted to digital signals. Then these signals are converted and compressed into IP protocols in order to provide access to the internet. The second step is the reverse of this process, when the signals reach at the receiver's end they are aging converted to analog signals. The voice signals are controlled by session control protocol, this protocol helps in the process of audio codec. Audio codec refers to the encoding of voice signals to travel over an IP arrangement. This process also monitors the tear down of calls. The process of audio codec is somewhat complex, because analog signals are converted to digital signals through either through audio streaming or using narrowband.