Γενικά για το VoIP

<p><strong>Voice over IP: &Mu;&epsilon;&tau;ά&delta;&omicron;&sigma;&eta; &phi;&omega;&nu;ή&sigmaf; &mu;έ&sigma;&omega; &tau;&omicron;&upsilon; Internet</strong><br /><br />&nbsp;&nbsp;&nbsp; * "&Omicron;&iota; &alpha;&upsilon;&xi;&eta;&mu;έ&nu;&epsilon;&sigmaf; &alpha;&nu;ά&gamma;&kappa;&epsilon;&sigmaf; &mu;&epsilon;&tau;ά&delta;&omicron;&sigma;&eta;&sigmaf; &phi;&omega;&nu;ή&sigmaf; &kappa;&alpha;&iota; &delta;&epsilon;&delta;&omicron;&mu;έ&nu;&omega;&nu; &pi;&omicron;&upsilon; &pi;&alpha;&rho;&omicron;&upsilon;&sigma;&iota;ά&zeta;&omicron;&nu;&tau;&alpha;&iota; &sigma;&epsilon; &mu;&iota;&kappa;&rho;&omicron;&mu;&epsilon;&sigma;&alpha;ί&epsilon;&sigmaf; &alpha;&lambda;&lambda;ά &kappa;&alpha;&iota; &mu;&epsilon;&gamma;&alpha;&lambda;ύ&tau;&epsilon;&rho;&epsilon;&sigmaf; &epsilon;&pi;&iota;&chi;&epsilon;&iota;&rho;ή&sigma;&epsilon;&iota;&sigmaf;, έ&chi;&omicron;&upsilon;&nu; &alpha;&pi;&omicron;&tau;έ&lambda;&epsilon;&sigma;&mu;&alpha; &tau;&eta;&nu; &alpha;&nu;&alpha;&zeta;ή&tau;&eta;&sigma;&eta; &nu;έ&omega;&nu; &mu;&epsilon;&theta;ό&delta;&omega;&nu; &tau;&alpha;&upsilon;&tau;ό&chi;&rho;&omicron;&nu;&eta;&sigmaf; &mu;&epsilon;&tau;ά&delta;&omicron;&sigma;&eta;&sigmaf;. &Eta; &mu;έ&theta;&omicron;&delta;&omicron;&sigmaf; &pi;&omicron;&upsilon; &epsilon;&pi;&iota;&kappa;&rho;&alpha;&tau;&epsilon;ί &gamma;&iota;&alpha; &tau;&eta;&nu; &kappa;ά&lambda;&upsilon;&psi;&eta; &tau;&omega;&nu; &alpha;&nu;&alpha;&gamma;&kappa;ώ&nu; &alpha;&upsilon;&tau;ώ&nu; &epsilon;ί&nu;&alpha;&iota; &eta; Voice over IP - &mu;&epsilon;&tau;ά&delta;&omicron;&sigma;&eta; &phi;&omega;&nu;ή&sigmaf; &mu;έ&sigma;&omega; &tau;&omicron;&upsilon; &pi;&rho;&omega;&tau;&omicron;&kappa;ό&lambda;&lambda;&omicron;&upsilon; TCP/IP"<br />&nbsp;&nbsp;&nbsp; * &Eta; &upsilon;&pi;&eta;&rho;&epsilon;&sigma;ί&alpha; Voice over IP (VoIP) &chi;&rho;&eta;&sigma;&iota;&mu;&omicron;&pi;&omicron;&iota;&epsilon;ί &tau;&omicron; &pi;&rho;&omega;&tau;ό&kappa;&omicron;&lambda;&lambda;&omicron; &tau;&omicron;&upsilon; &Delta;&iota;&alpha;&delta;&iota;&kappa;&tau;ύ&omicron;&upsilon; (Internet Protocol) &gamma;&iota;&alpha; &nu;&alpha; &mu;&epsilon;&tau;&alpha;&phi;έ&rho;&epsilon;&iota; &tau;&eta;&lambda;&epsilon;&phi;&omega;&nu;&iota;&kappa;έ&sigmaf; &sigma;&upsilon;&nu;&omicron;&mu;&iota;&lambda;ί&epsilon;&sigmaf;, &mu;&epsilon;&tau;&alpha;&tau;&rho;έ&pi;&omicron;&nu;&tau;&alpha;&sigmaf; &tau;&eta; &phi;&omega;&nu;ή &sigma;&epsilon; &pi;&alpha;&kappa;έ&tau;&alpha; &delta;&epsilon;&delta;&omicron;&mu;έ&nu;&omega;&nu;<br />&nbsp;&nbsp;&nbsp; * &Tau;&omicron; &upsilon;&pi;ά&rho;&chi;&omicron;&nu; &mu;&omicron;&nu;&tau;έ&lambda;&omicron; &tau;&eta;&lambda;&epsilon;&pi;&iota;&kappa;&omicron;&iota;&nu;&omega;&nu;&iota;ώ&nu; &epsilon;&pi;&iota;&kappa;&epsilon;&nu;&tau;&rho;ώ&nu;&epsilon;&tau;&alpha;&iota; &sigma;&tau;&eta; &phi;&omega;&nu;ή &kappa;&alpha;&iota; &tau;&eta;&nu; &pi;&alpha;&rho;&omicron;&chi;ή &sigma;&chi;&epsilon;&tau;&iota;&kappa;ώ&nu; &upsilon;&pi;&eta;&rho;&epsilon;&sigma;&iota;ώ&nu;, &sigma;&tau;&eta;&nu; &alpha;&sigma;ύ&rho;&mu;&alpha;&tau;&eta; &kappa;&alpha;&iota; &epsilon;&nu;&sigma;ύ&rho;&mu;&alpha;&tau;&eta; &tau;&eta;&lambda;&epsilon;&phi;&omega;&nu;ί&alpha;. &Eta; &upsilon;&pi;&eta;&rho;&epsilon;&sigma;ί&alpha; Voice over IP &alpha;&pi;&omicron;&tau;&epsilon;&lambda;&epsilon;ί &mu;έ&rho;&omicron;&sigmaf; &tau;&omega;&nu; &upsilon;&pi;&eta;&rho;&epsilon;&sigma;&iota;ώ&nu; &mu;&epsilon;&tau;ά&delta;&omicron;&sigma;&eta;&sigmaf; &sigma;&epsilon; &pi;&rho;&alpha;&gamma;&mu;&alpha;&tau;&iota;&kappa;ό &chi;&rho;ό&nu;&omicron;, &eta; &omicron;&pi;&omicron;ί&alpha; &tau;&epsilon;ί&nu;&epsilon;&iota; &nu;&alpha; &alpha;&nu;&tau;&iota;&kappa;&alpha;&tau;&alpha;&sigma;&tau;ή&sigma;&epsilon;&iota; &tau;&eta; &sigma;&upsilon;&mu;&beta;&alpha;&tau;&iota;&kappa;ή &tau;&epsilon;&chi;&nu;&omicron;&lambda;&omicron;&gamma;ί&alpha; &tau;&omicron;&upsilon; &tau;&eta;&lambda;&epsilon;&phi;ώ&nu;&omicron;&upsilon; &alpha;&nu;&alpha;&tau;&rho;έ&pi;&omicron;&nu;&tau;&alpha;&sigmaf; &tau;&alpha; &delta;&epsilon;&delta;&omicron;&mu;έ&nu;&alpha; &kappa;&alpha;&iota; &tau;&iota;&sigmaf; &tau;&iota;&mu;έ&sigmaf; &tau;&omega;&nu; &tau;&eta;&lambda;&epsilon;&phi;&omega;&nu;&iota;&kappa;ώ&nu; &upsilon;&pi;&eta;&rho;&epsilon;&sigma;&iota;ώ&nu; &pi;&alpha;&gamma;&kappa;&omicron;&sigma;&mu;ί&omega;&sigmaf;<br />&nbsp;&nbsp;&nbsp; * &Eta; &alpha;&rho;&chi;ή &pi;ά&nu;&omega; &sigma;&tau;&eta;&nu; &omicron;&pi;&omicron;ί&alpha; &sigma;&tau;&eta;&rho;ί&zeta;&epsilon;&tau;&alpha;&iota; &eta; &lambda;&epsilon;&iota;&tau;&omicron;&upsilon;&rho;&gamma;ί&alpha; &tau;&eta;&sigmaf; &mu;&epsilon;&tau;ά&delta;&omicron;&sigma;&eta;&sigmaf; &phi;&omega;&nu;ή&sigmaf; &mu;έ&sigma;&omega; IP &epsilon;ί&nu;&alpha;&iota; ό&tau;&iota; o &pi;&epsilon;&lambda;ά&tau;&eta;&sigmaf; &pi;&lambda;&eta;&rho;ώ&nu;&epsilon;&iota; έ&nu;&alpha; &omicron;&rho;&iota;&sigma;&mu;έ&nu;&omicron; &pi;&omicron;&sigma;ό &gamma;&iota;&alpha; &nu;&alpha; &sigma;&upsilon;&nu;&delta;&epsilon;&theta;&epsilon;ί &sigma;&tau;&omicron; &delta;ί&kappa;&tau;&upsilon;&omicron; &kappa;&alpha;&iota; &sigma;&tau;&eta; &sigma;&upsilon;&nu;έ&chi;&epsilon;&iota;&alpha; &pi;&lambda;&eta;&rho;ώ&nu;&epsilon;&iota; &alpha;&nu;ά&lambda;&omicron;&gamma;&alpha; &mu;&epsilon; &tau;&omicron; &chi;&rho;ό&nu;&omicron; &chi;&rho;ή&sigma;&eta;&sigmaf; &kappa;&alpha;&iota; &tau;&iota;&sigmaf; &chi;&rho;&eta;&sigma;&iota;&mu;&omicron;&pi;&omicron;&iota;&omicron;ύ&mu;&epsilon;&nu;&epsilon;&sigmaf; &epsilon;&gamma;&kappa;&alpha;&tau;&alpha;&sigma;&tau;ά&sigma;&epsilon;&iota;&sigmaf; (&beta;ά&sigma;&epsilon;&iota; &tau;&eta;&sigmaf; &alpha;&pi;ό&sigma;&tau;&alpha;&sigma;&eta;&sigmaf;)<br />&nbsp;&nbsp;&nbsp; * &Eta; &sigma;&upsilon;&chi;&nu;ό&tau;&eta;&tau;&alpha; &pi;&omicron;&upsilon; &alpha;&pi;&alpha;&iota;&tau;&epsilon;ί &eta; &tau;&epsilon;&chi;&nu;&omicron;&lambda;&omicron;&gamma;ί&alpha; &Iota;&Rho; &gamma;&iota;&alpha; &tau;&eta; &mu;&epsilon;&tau;ά&delta;&omicron;&sigma;&eta; &tau;&omega;&nu; &delta;&epsilon;&delta;&omicron;&mu;έ&nu;&omega;&nu; &epsilon;ί&nu;&alpha;&iota; &tau;&omicron;&upsilon;&lambda;ά&chi;&iota;&sigma;&tau;&omicron;&nu; έ&xi;&iota; &phi;&omicron;&rho;έ&sigmaf; &mu;&iota;&kappa;&rho;ό&tau;&epsilon;&rho;&eta; &alpha;&pi;ό &tau;&eta;&nu; &alpha;&nu;&tau;ί&sigma;&tau;&omicron;&iota;&chi;&eta; &tau;&omega;&nu; &pi;&alpha;&rho;&alpha;&delta;&omicron;&sigma;&iota;&alpha;&kappa;ώ&nu; &tau;&eta;&lambda;&epsilon;&pi;&iota;&kappa;&omicron;&iota;&nu;&omega;&nu;&iota;&alpha;&kappa;ώ&nu; &delta;&iota;&kappa;&tau;ύ&omega;&nu; &pi;&omicron;&upsilon; &chi;&rho;&eta;&sigma;&iota;&mu;&omicron;&pi;&omicron;&iota;&omicron;ύ&nu; &sigma;ή&mu;&epsilon;&rho;&alpha; &omicron;&iota; &pi;&epsilon;&rho;&iota;&sigma;&sigma;ό&tau;&epsilon;&rho;&omicron;&iota; &sigma;&upsilon;&nu;&delta;&rho;&omicron;&mu;&eta;&tau;έ&sigmaf; &sigma;&epsilon; ό&lambda;&omicron; &tau;&omicron;&nu; &kappa;ό&sigma;&mu;&omicron;. &Eta; &sigma;&eta;&mu;&alpha;&nu;&tau;&iota;&kappa;ή &alpha;&upsilon;&tau;ή &delta;&iota;&alpha;&phi;&omicron;&rho;ά &kappa;&alpha;&theta;&iota;&sigma;&tau;ά &tau;&iota;&sigmaf; &kappa;&lambda;ή&sigma;&epsilon;&iota;&sigmaf; &mu;έ&sigma;&omega; &tau;&omicron;&upsilon; VoIP &sigma;&alpha;&phi;έ&sigma;&tau;&alpha;&tau;&alpha; &pi;&iota;&omicron; &omicron;&iota;&kappa;&omicron;&nu;&omicron;&mu;&iota;&kappa;έ&sigmaf;, &kappa;&alpha;&iota; &sigma;&epsilon; &alpha;&rho;&kappa;&epsilon;&tau;έ&sigmaf; &pi;&epsilon;&rho;&iota;&pi;&tau;ώ&sigma;&epsilon;&iota;&sigmaf; &tau;&omicron; &tau;&eta;&lambda;&epsilon;&phi;ώ&nu;&eta;&mu;&alpha; &mu;έ&sigma;&omega; &Delta;&iota;&alpha;&delta;&iota;&kappa;&tau;ύ&omicron;&upsilon; &mu;&pi;&omicron;&rho;&epsilon;ί &nu;&alpha; &sigma;&tau;&omicron;&iota;&chi;ί&sigma;&epsilon;&iota; έ&omega;&sigmaf; &kappa;&alpha;&iota; 90% &phi;&theta;&eta;&nu;ό&tau;&epsilon;&rho;&alpha; &alpha;&pi;' ό,&tau;&iota; &mu;έ&sigma;&omega; &tau;&omicron;&upsilon; &pi;&alpha;&rho;&alpha;&delta;&omicron;&sigma;&iota;&alpha;&kappa;&omicron;ύ &tau;&eta;&lambda;&epsilon;&pi;&iota;&kappa;&omicron;&iota;&nu;&omega;&nu;&iota;&alpha;&kappa;&omicron;ύ &delta;&iota;&kappa;&tau;ύ&omicron;&upsilon;<br />&nbsp;&nbsp;&nbsp; * &Pi;&omicron;&lambda;&lambda;έ&sigmaf; &epsilon;&upsilon;&rho;&omega;&pi;&alpha;ϊ&kappa;έ&sigmaf; -&kappa;&alpha;&iota; &epsilon;&lambda;&lambda;&eta;&nu;&iota;&kappa;έ&sigmaf;- &epsilon;&tau;&alpha;&iota;&rho;ί&epsilon;&sigmaf; &tau;&eta;&lambda;&epsilon;&pi;&iota;&kappa;&omicron;&iota;&nu;&omega;&nu;&iota;ώ&nu; έ&chi;&omicron;&upsilon;&nu; &alpha;&rho;&chi;ί&sigma;&epsilon;&iota; &nu;&alpha; &epsilon;&pi;&epsilon;&nu;&delta;ύ&omicron;&upsilon;&nu; &delta;&upsilon;&nu;&alpha;&mu;&iota;&kappa;ά &sigma;&tau;&omicron; Voice over IP. &Mu;έ&chi;&rho;&iota; &tau;&omicron; 2009 ό&lambda;&epsilon;&sigmaf; &omicron;&iota; &upsilon;&pi;&eta;&rho;&epsilon;&sigma;ί&epsilon;&sigmaf; &tau;&omega;&nu; &epsilon;&tau;&alpha;&iota;&rho;&epsilon;&iota;ώ&nu; &alpha;&upsilon;&tau;ώ&nu; (&phi;&omega;&nu;ή, fax, &mu;&epsilon;&tau;&alpha;&phi;&omicron;&rho;ά &delta;&epsilon;&delta;&omicron;&mu;έ&nu;&omega;&nu;, video conferencing &kappa;.&lambda;&pi;.) &theta;&alpha; &pi;&alpha;&rho;έ&chi;&omicron;&nu;&tau;&alpha;&iota; &mu;ό&nu;&omicron; &mu;έ&sigma;&omega; IP<br />&nbsp;&nbsp;&nbsp; * &Eta; &nu;έ&alpha; &upsilon;&pi;&eta;&rho;&epsilon;&sigma;ί&alpha; &chi;&rho;&eta;&sigma;&iota;&mu;&omicron;&pi;&omicron;&iota;&epsilon;ί&tau;&alpha;&iota; &epsilon;&upsilon;&rho;έ&omega;&sigmaf; &sigma;&epsilon; &epsilon;&pi;&iota;&chi;&epsilon;&iota;&rho;ή&sigma;&epsilon;&iota;&sigmaf; &tau;&omicron;&upsilon; &epsilon;&xi;&omega;&tau;&epsilon;&rho;&iota;&kappa;&omicron;ύ. &Sigma;ύ&mu;&phi;&omega;&nu;&alpha; &mu;&epsilon; &mu;&epsilon;&lambda;έ&tau;&epsilon;&sigmaf;, &upsilon;&pi;&omicron;&lambda;&omicron;&gamma;ί&zeta;&epsilon;&tau;&alpha;&iota; ό&tau;&iota; &mu;έ&sigma;&alpha; &sigma;&tau;&alpha; &epsilon;&pi;ό&mu;&epsilon;&nu;&alpha; &chi;&rho;ό&nu;&iota;&alpha; &eta; &alpha;&nu;ά&pi;&tau;&upsilon;&xi;&eta; &tau;&eta;&sigmaf; &phi;&omega;&nu;ή&sigmaf; &mu;έ&sigma;&omega; Internet &theta;&alpha; &epsilon;ί&nu;&alpha;&iota; &rho;&alpha;&gamma;&delta;&alpha;ί&alpha; &kappa;&alpha;&iota; &omicron; ό&gamma;&kappa;&omicron;&sigmaf; &kappa;ί&nu;&eta;&sigma;&eta;&sigmaf; &theta;&alpha; &epsilon;ί&nu;&alpha;&iota; &mu;&epsilon;&gamma;&alpha;&lambda;ύ&tau;&epsilon;&rho;&omicron;&sigmaf; &alpha;&pi;' ό,&tau;&iota; &sigma;&tau;&eta;&nu; &pi;&alpha;&rho;&alpha;&delta;&omicron;&sigma;&iota;&alpha;&kappa;ή &tau;&eta;&lambda;&epsilon;&phi;&omega;&nu;ί&alpha;. &Omicron;&iota; &pi;&rho;&omicron;&mu;&eta;&theta;&epsilon;&upsilon;&tau;έ&sigmaf; &tau;&eta;&lambda;&epsilon;&pi;&iota;&kappa;&omicron;&iota;&nu;&omega;&nu;&iota;&alpha;&kappa;&omicron;ύ &epsilon;&xi;&omicron;&pi;&lambda;&iota;&sigma;&mu;&omicron;ύ έ&chi;&omicron;&upsilon;&nu; &xi;&epsilon;&kappa;&iota;&nu;ή&sigma;&epsilon;&iota; &nu;&alpha; &sigma;&upsilon;&mu;&pi;&epsilon;&rho;&iota;&lambda;&alpha;&mu;&beta;ά&nu;&omicron;&upsilon;&nu; &sigma;&tau;&alpha; &pi;&rho;&omicron;ϊό&nu;&tau;&alpha; &tau;&omicron;&upsilon;&sigmaf; &kappa;&alpha;&iota; &tau;&omicron; &pi;&rho;&omega;&tau;ό&kappa;&omicron;&lambda;&lambda;&omicron; &Iota;&Rho;, &epsilon;&nu;ώ ό&lambda;&omicron;&iota; &omicron;&iota; &pi;&rho;&omicron;&mu;&eta;&theta;&epsilon;&upsilon;&tau;έ&sigmaf; &epsilon;&xi;&omicron;&pi;&lambda;&iota;&sigma;&mu;&omicron;ύ &Iota;&Rho; &sigma;&upsilon;&mu;&pi;&epsilon;&rho;&iota;&lambda;&alpha;&mu;&beta;ά&nu;&omicron;&upsilon;&nu; &tau;&eta; &phi;&omega;&nu;ή &omega;&sigmaf; έ&nu;&alpha; &alpha;&pi;ό &tau;&alpha; &beta;&alpha;&sigma;&iota;&kappa;ά &chi;&alpha;&rho;&alpha;&kappa;&tau;&eta;&rho;&iota;&sigma;&tau;&iota;&kappa;ά &tau;&omega;&nu; &pi;&rho;&omicron;ϊό&nu;&tau;&omega;&nu; &tau;&omicron;&upsilon;&sigmaf;</p>