train telephone; railway radiotelephone
Refers to a telephone service available on trains, historically a radiotelephone system. Now largely obsolete with the spread of mobile phones.
In the past, train telephones were installed on the Shinkansen.
Train telephones were discontinued due to the spread of mobile phones.
A public payphone, not specifically on a train.
A mobile phone, which has largely replaced train telephones.
Compound of 列車 (train) and 電話 (telephone).