o Cell Phones—Data overtakes voice when it comes to cell phones but can use both. People see voice as intrusive and as a waste of time, saving it for a last resort. According to the CTIA, the number text message sent last year was up 50% on the year before. Add to that email, the multitasking nature of SMS and instant-messaging, and the other non-voice-based communications available on our phones today. o Landline phones—Landline phones use both according to a few articles. Not much information given. o SMS / Text Messaging—Also goes with data usage with cell phones. Since SMS used signaling channel as opposed to dedicated channels, these messages can be sent/received simultaneously with the voice/data/fax network over a GSM network. SMS supports national and international roaming. This means that you can send short messages to any other GSM mobile user around the world. With the PCS networks based on all the three technologies, GSM, CDMA and TDMA supporting SMS, SMS is more or less a universal mobile data service. o Fax Machines—Voice they quite often share a phone extension and have fax switch. Although the two are becoming one and the same thing to a certain extent now. Internally all the large telephone companies are switching to unified data networks to carry all of their traffic, and tweaking the parameters for best results with each distinct type of traffic going onto the network. o Pagers—Typically familiar with a cell phone in different ways also using both voice and data. A pager, also known as a beeper is a simple personal telecommunications device for sending and receiving short messages. o VOIP (Voice over IP) phones— (Both) With VoIP, analog voice calls are converted into packets of data. The packets travel like any other type of data, such as e-mail, over the public Internet and/or any private Internet Protocol (IP) network. Using a VoIP