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Acquired by Cisco Systems. Headquarters. United States. Parent. Cisco Systems. Selsius Systems was a telecommunications company in Dallas, Texas that developed and marketed some of the first IP telephony gear. It was co-founded by Richard Platt and David Tucker. Selsius was incorporated in 1997 and acquired by Cisco Systems in November, 1998.
Voice over Internet Protocol ( VoIP ), [ a ] also called IP telephony, is a method and group of technologies for voice calls for the delivery of voice communication sessions over Internet Protocol (IP) networks, [ 2 ] such as the Internet. The broader terms Internet telephony, broadband telephony, and broadband phone service specifically refer ...
Ringdown. In telephony, ringdown is a method of signaling an operator in which telephone ringing current is sent over the line to operate a lamp or cause the operation of a self-locking relay known as a drop . Ringdown is used in manual operation, and is distinguished from automatic signaling by dialing a number.
A VoIP phone or IP phone uses voice over IP technologies for placing and transmitting telephone calls over an IP network, such as the Internet. [ 1] This is in contrast to a standard phone which uses the traditional public switched telephone network (PSTN). Digital IP-based telephone service uses control protocols such as the Session Initiation ...
Linksys iPhone. The Linksys iPhone was a line of internet appliances from Cisco Systems. The first iPhone model—released by Infogear in 1998 [ 2][ 3] —combined the features of a regular phone and a web terminal. The company was later purchased by Cisco and no new products were marketed under the name between 2001 and 2006.
Interactive voice response ( IVR) is a technology that allows telephone users to interact with a computer-operated telephone system through the use of voice and DTMF tones input with a keypad. In telephony, IVR allows customers to interact with a company's host system via a telephone keypad or by speech recognition, after which services can be ...
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IP cameras, data and network security etc. [ 8 ] Voice and conferencing. VOIP phones and gateway-systems, WebEx, video conferencing. Wireless. Indoor Wi-Fi Access points, Wireless Controller. Network storage systems. Persistent people storage on networks, either in the traditional sense or in a cloud-like manner.