It is a device capturing and controling all the signals, which are being created by the whole system, especially the made and received phone call signals. The device is mostly used for connecting regular phone system with the Internet and backwards.
Cisco 6911 is inexpensive model of the IP phone to be placed in the libraries, lecture classes and remote workers (Cisco UC Phone 6911, Standard handset). The specialty of this model is programmable functional key ensuring quick access to modern day communication services. Three-color line LED provides visual monitoring.