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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.
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. [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 ...
Vertical Communications, Inc. is a corporation that specialized in premises-based private branch exchanges, i.e., business telephone systems. Vertical Communications changed its name on January 1, 2005 from Artisoft, Inc. after acquiring Vertical Networks in September 2004. In September 2005, Vertical Communications acquired Comdial.
Zultys' primary product is its line of cloud and premises-based Zultys MX IP PBXs, which are based on SIP open standards.. Zultys IP phone systems offer features such as softphone, presence, secure chat, instant messaging, remote work, call centres, interactive voice response, automatic call distributor, automated and on-demand call-recording software, fax, integration of mobile devices into ...
3CX produces a telephone system under the same name. The system consists of a number of software-based [13] components. It can be accessed via a Web Client, PWA, Desktop App, Management & Admin consoles, softphone for Windows, and smartphone clients for iOS and Android. 3CX can be used with either SIP phones or the clients, or a combination of ...
There are still some older alarm systems that require a landline phone line.” Closeup of male hand holding telephone receiver while dialing a telephone number to make a call using a black ...
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.