Wireless
Overview
VoIP or Voice over IP technology is a combination of hardware and software, which allows users to make telephone calls using the Internet as a transmission medium. Wireless technology allows the users to transfer information without the use of wires. Wireless VoIP (Voice over Wireless fidelity or VoWiFi) is a wireless based IP system that is designed to work on wireless devices like laptops or Personal Digital Assistants (PDA).
Overview
4G is the fourth generation of wireless technologies for the mobile telecommunications and mobile phone services. It is a successor of previous wireless technologies 2.5G and 3G. A 4G network can cover a whole city or country. A 4G system is expected to provide secure and complete IP-based solutions where services like ultra-broadband Internet access, Voice over IP telephony, streamed multimedia and online gaming may be provided to the users.
Overview
3.5G technology or HSPA technology is a collection of HSUPA (High-Speed Uplink Packet Access) and HSDPA (High-Speed Downlink Packet Access) mobile telephony protocols that improves and extends the current UMTS (Universal Mobile Telecommunications System) and WCDMA (Wideband Code Multiple Division Access) protocols performance. It promises the streaming of live television and music videos, plus fast wireless access to the Internet through mobile handsets.
Overview
Cell phones offer a wide range of opportunities like sending text messages and media files, transmitting voice, access to the Internet, integration with other devices etc. but video conferencing and video calls became the third generation of mobile technology. 3G is the third generation of wireless technologies for the mobile telecommunications and mobile phone services. It is also known as International Mobile Telecommunications -2000 (ITU-2000).