
1.		Satellite communications systems / G. Maral, M. Bousquet Autor: Maral, G. Data Publicação: 1986
2.		Voice/data telecommunications systems : An Introduction to technology / Michael L. Gurrie, Patrick J. O'Connor Autor: Gurrie, Michael L.; O'Connor, Patrick J. Data Publicação: 1986
3.		Telecommunication transmission handbook / Roger L. Freeman Autor: Freeman, Roger L. Data Publicação: 1975
4.		Telephony : a detailed exposition of the telephone exchange systems of the British Post Office / J. Atkinson Autor: Atkinson, J. Data Publicação: 1948
5.		Telephony : a detailed exposition of the telephone system of the British Post Office / T. E. Herbert; W. S. Procter Autor: Herbert, T. E. Data Publicação: 1934-1941
6.		Telephony : a detailed exposition of the telephone system of the British Post Office / T. E. Herbert; W. S. Procter Autor: Herbert, T. E. Data Publicação: 1934-1941
7.		Telephony : a detailed exposition of the telephone system of the British Post Office / T. E. Herbert; W. S. Procter Autor: Herbert, T. E. Data Publicação: 1946
8.		Telephony : a detailed exposition of the telephone system of the British Post Office / T. E. Herbert; W. S. Procter Autor: Herbert, T. E. Data Publicação: 1946
9.		Telephones and telephony Autor: Gust, Fr. W. Data Publicação: 1935
10.		Telephony : a detailed exposition of the telephone exchange systems of the British Post Office / J. Atkinson Autor: Atkinson, J. Data Publicação: 1948
11.		Telephony : a detailed exposition of the telephone exchange systems of the British Post Office / J. Atkinson Autor: Atkinson, J. Data Publicação: 1950
12.		Telecommunications act 1984 : Chapter 12 / Her Majesty's Stationery Office