With the way the VoIP is going, your secretary may in fact be out of a job within in the next 5 to 10 years. Recently, corporations have been replacing their outdated PBX analog systems with new VoIP ones and are saving thousands of dollars on their phone bills. Even though VoIP is a relatively new technology, it’s already signed up for a face lift. As it seems, the good people at IEEE stand down and thought, "Hey, VoIP runs on LANs, don't we have WLANS too?". And thus, wireless VoIP was born. The essence behind the technology in laments terms is that it piggy backs on a wireless network and connects through a broadband signal like any other VoIP system. The benefit to a wireless system however, is that your business office could be portable to wherever you could connect to the corporate network. That corporate cell phone that you don’t see the bill for would be replaced by a VoIP activated one. Many mobile companies such as hospitals and warehouses already have mobile systems emplaced inside of their building.
While this may seem too good to be true, there are several draw backs to this new system. For instance, as it is well known, the distance allowed through SpeedBoosted Wireless G routers are around 1/4 of a mile. In order to create an all encompassing infrastructure would be a huge undertaking for any company wishing to pus the limits of their own property. Additionally, if you were walking around outside on a VoIP phone, you would have to connect every time you passed from one nod to the other. Although the connection time would be around three seconds, the conversation would be lost due to the reconnection. The reason for this reconnection would be to authenticate the user, and insure that they belong on the network. Although current WEP standards would elevate this connection problem, any hacker with a brain and keyboard could hack the connection and wire into the conversation. Thus, a streaming encryption would be necessary; do I smell RFID? Maybe so.
Although the promise of Wireless VoIP is too much to overlook, the implication of it will be a true test of networking ingenuity and corporate might. Until the connectivity issues are taken care of, wireless VoIP is just going to be a good idea. My advice until then is to stay plugged in behind that 128-bit encryption, and keep that cell phone close at hand. According to the WirelessNewsNetwork:
Gartner analyst Keene doesn't expect voice over wireless to move into the mainstream for at least five years but recommends that businesses prepare for its arrival. They can do so by choosingnetwork infrastructure such as switches and routers that will support IP telephony in both wired and wireless environments, as well as provide the redundancy required for IP telephony (analog phone lines work when the power goes out or the network crashes, but IP telephony won't). "That's cheaper than ripping it all out later," Keene notes.
Read more at: VoIP Without Wires