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Open Standards Software IP PBX - 3CX
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eflo - Asterisk VOIP Phone Systems * Call Center Systems
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Bicom Systems - VoIP Phone Systems, IP PBX Cloud Services, Softphone, Unified Communications for VoIP Providers, Call Centers, CLEC, ITSP, and Multi-Tenant
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Yealink | UC&C terminal, video collaboration, conference phone, IP phone
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Cloud-Based Business Phone Systems, Voice & Video Communications
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SIPNET - IP-telephony, digital, voip, internet-telephony for mobile phone
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CyraCom | Phone & Video Interpretation | Translation