The sound is so bad we dont use the phone , we have dsl (new wireless modem told old one was the issue) no better ...all new filters and one new cheap wire phone. other phones are panasonic dect 6.0. all our utilities are underground and the phone jack in my garage must be from the 60's . its a 2 post unit with plastic type base and a ground wire to it and the wire coming thru the wall, there must be 20 to 25 different colors to it . We did a have a problem with no dial tone if kitchen phone was plugged in so we dont use it . I also think my dsl could be faster if connection was better . all the forums talk about goto box outside and try that jack I DONT EVEN HAVE ONE OF THOSE BOXES!!!!