telephone是可数名词。
telephone:n.电话;电话机;(电话机的)话筒,受话器
Telephone calls came flooding in from all over the country.
全国各地的电话像潮水般打来。
He would spend hours on the telephone.
他一打电话往往就是几个小时。
This model combines a telephone and fax machine.
这种型号同时具备电话机和传真机的功能。