using the latest code on pbxnsip and snom300 phones when a call is placed on hold by pressing the line key the call is held and the outside party hears music but the phone starts to generate a secondary tone and does not go away until the call is taken off hold. so essentially when you place a call onhold you have to listen to a fairly loud dial tone while you go about what ever you need to do. does anyone know of a fix for this ?