<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"> <div id="yui_3_16_0_ym19_1_1485466034272_6043" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"> can you tap in 3rd party SIP phones? I need to add a site to a current system and would like to use their phones before we can order more 7841s</div><div id="yui_3_16_0_ym19_1_1485466034272_6044" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><br id="yui_3_16_0_ym19_1_1485466034272_6045"></div><div id="yui_3_16_0_ym19_1_1485466034272_6046" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><br id="yui_3_16_0_ym19_1_1485466034272_6047"></div><div id="yui_3_16_0_ym19_1_1485467060649_2761" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);" dir="ltr">Thanks</div></div></body></html>