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.
IP Phone Yealink SIP-T28P has all the advantages of other devices from Yealinkâs product range: convenient handset, the optimal angle of the screen, high-definition audio that meets IEEE1329 standards, ten additional programmable keys to automate most common actions and LED status indication of contacts whose numbers are set to speed dial.