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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.
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 .
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 ...
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]
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Level 3 Communications, Inc. was an American multinational telecommunications and Internet service provider company headquartered in Broomfield, Colorado. [4] It ultimately became a part of CenturyLink (now Lumen Technologies), where Level 3 President and CEO Jeff Storey was installed as Chief Operating Officer, becoming CEO of CenturyLink one year later in a prearranged succession plan.
PAETEC Holding Corporation was a Fortune 1000 telecommunications company headquartered in Perinton, New York, United States. [3] It was founded as the private company PaeTec Communications, Inc. in 1998 by Arunas A. Chesonis.
Asterisk-based business phone systems were the first of a new generation of VoIP-based communications products to compete with companies such as Cisco and Avaya. Reflecting the company's shift away from Linux support to developing Asterisk and new communications solutions, Linux Support Services was renamed Digium in 2001.