this product was purchased some months ago from a dealer. unfortunately, the handset of this telephone was not this set. We come back to the dealer for change of handset. He told that other set was also sold out, if other persone (who purchased 2nd set) will come, inform you. After laps of few months, the other purchaser has not come nor he informed the dealer. Now we wants to change/match the freqency of this telephone and handset please. Ayub, Islamabad.