SIP

Article Details
URL: https://support.freespeech.co.uk/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=47
Article ID: 47
Created On: 02 Mar 2006 09:24 AM

Answer

SIP (Session Initiated Protocol) is the protocol we use for delivering our broadband phone service. It is the leading VOIP (Voice Over IP) protocol.

read more at wikipedia -> SIP (Session Initiated Protocol)