Will your telephone work in Europe?
If YOUR provider support roaming in Europe AND your phone is capable of accessing a 900/1800MHZ network it should work!
Telephone Exchange - In the field of telecommunications, a telephone exchange or telephone switch is a system of electronic components that connects telephone calls. A central office is the physical building used to house inside plant equipment including telephone switches, which make telephone calls "work" in the sense of making connections and relaying the speech information.
A local telephone directory is an essential in any office, whether you work from home or in a professional setting. Fortunately, you can typically contact your local telephone company in order to acquire a free telephone directory that lists both residential and commercial telephone numbers in your local area.