my synergy 2150 had no dial tone or ring tone i reset it by turning off at the mains then pressed down the page button as i re plugged it in then after teh 4 bleeps there was a continious bleep,when that ended i then pressed the page button 5 times,apparantly this is how you reset it the hand set is now showing NOT SUB can anyone help,i also have just put new batteries in and fully chargd it

ALLY, November 2010