I sent this to the Amazon who returned without discussing: no connection between the base and the Komen: - Must re-entering directory numbers -it is necessary to erase the information on each handset new posts -5 Ringtones poor, little sound and especially those of the base are different handsets we get a terrible cacophony -Notice Unclear -service after paying sales and unresponsive. I chose the Gigaset A420A certainly a little more expensive but incomparably