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- SIP, acronym for Session Initiation Protocol, is a standard protocol that allows initiation of an interactive user session involving voice, video, chat, gaming, and other multimedia elements in an IP network. Browse this site http://www.tierzero.com/what-we-do/business-voice/ for more information on sip Trunking. Over the last few years, users of VoIP (Voice over IP) have updated their systems adopting SIP. Therefore learn about sip Trunking and avail the benefits.
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