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</html><description>WHAT ARE VOIP PHONES? SIP stands for Session Initiation Protocol. It is a communications protocol for integrating multimedia communication sessions. VoIP (Voice over Internet Protocol) phones, also known as SIP phones, are IP (Internet Protocol) telephones that enable your internet service provider to integrate basic phone capabilities with web, email, online chat and more through [&hellip;]</description><thumbnail_url>https://www.voipsupply.com/blog/voip-insider/files/2014/12/yealink_sip-t23g_voip_supply_front-150x119.jpg</thumbnail_url></oembed>
