What is Voice over Internet Protocol (VoIP)? Is a family of transmission technologies for delivery of voice communications over IP networks such as the Internet or other packet-switched networks.

Cisco IP phone & IP door intercom live demonstration

Cisco technician Randy Benn performs a live demostration of compatibility between IP door intercom with integrated video camera (2N Helios IP) and Cisco IP phone (Cisco 9971). Calls placed from the 2N IP door intercom can stream live video from the c...

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