Power Over Ethernet is a technology that enables electrical current to be transmitted over standard Ethernet network cables rather than traditional power cords. POE is a convenient way to supply power to devices like VoIP phones, security cameras and RFID readers, without having to install dedicated electrical wiring.
QoS (Quality of Service) describes a concept whereby data bandwidth and error rates can be measured, improved and guaranteed. QoS is especially important to real-time traffic like voice and streaming multimedia, where any data loss or delay would result in unacceptable audio or image quality. Delivering sufficient QoS is an essential aspect of modern IP networks.
Voice over IP can deliver impressive savings on your phone service by enabling you to place calls over an IP network instead of using the traditional PSTN. It's also possible to run VoIP over wireless and cellular technology, with many cellular carriers offering hybrid handsets that can seamlessly switch to VoIP over Wi-Fi when a wireless network is in range - even while a call is active. By installing applications like Skype for Mobile, these devices can bypass the cellular network to make low-cost calls over the Internet from your home, office, or free public Wi-Fi hotspots
Traffic shaping (also known as bandwidth shaping or packet shaping) is a method of regulating network data flows to ensure a consistent throughput or quality of service (QoS) for specific applications. It involves delaying the transfer of low-priority packets while expediting the transfer of high-priority packets to achieve a desired traffic profile. Restricting the flow of incoming packets is called bandwidth throttling or bandwidth policing, and restricting the flow of outbound packets is called rate limiting.