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Founded in 2002, Grandstream Networks is a manufacturer of IP voice and video communications equipment, video surveillance, [1] gateways and analog telephone adapters (ATAs), and Asterisk-based IP-PBX appliances. Grandstream supplies small and medium businesses and consumers with open-standard SIP-based products.
Avaya provides business related equipment for its customers such as cameras, collaboration units, conference phones, headsets, IP phones, room systems, Vantage, and wireless handsets. These devices are compatible with various options for the three services provided to its customers as Avaya Cloud Office, Avaya Spaces, and Avaya UCaaS.
Mitel Networks Corporation is a Canadian telecommunications company. The company previously produced TDM PBX systems and applications, but after a change in ownership in 2001, now focuses almost entirely on Voice-over-IP (VoIP), unified communications, collaboration and contact center products. [2]
Asterisk is a software implementation of a private branch exchange (PBX). In conjunction with suitable telephony hardware interfaces and network applications, Asterisk is used to establish and control telephone calls between telecommunication endpoints such as customary telephone sets, destinations on the public switched telephone network (PSTN) and devices or services on voice over Internet ...
8x8, Inc. is an American provider of Voice over IP products. Its products include cloud-based voice, contact center , video, mobile and unified communications for businesses. Since 2018, 8x8 manages Jitsi .
3CX, Inc., is a software development company and developer of the 3CX Phone System. The 3CX Phone System is a software private branch exchange based on the SIP (Session Initiation Protocol) standard to allow calls via the public switched telephone network (PSTN) or via Voice over Internet Protocol (VoIP) services.
Ooma was founded by Andrew Frame, who previously worked for Cisco Systems, and Michael Cerda. [5] [6] Ooma's initial product was a "VoIP in a box" device that had the capability to use peer-to-peer VoIP technology to let users make phone calls over other Ooma users' landline services.
His motivation for starting the company was the high cost of existing business phone systems. [ 2 ] [ 3 ] Spencer named it Asterisk after the programming wildcard symbol and the ”star” phone key. It enabled phone calls over the Internet, providing an alternative to hardware-dependent PBX systems at a reduced cost.