SigmaVoIP, a leading VoIP installer in the United States, replaced Cisco's UC300 Series with Grandstream’s UCM series of IP PBX Appliances for all customers. Download the case study to learn why.
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Grandstream Networks, Inc. has been connecting the world since 2002 with SIP Unified Communications solutions, making businesses more productive than ever before. Our award-winning solutions serve SMBs and enterprises markets and we’ve been recognized throughout the world for our quality, reliability and innovation.