TY  - BOOK
AU  - Valdar,A.R.
TI  - Understanding telecommunications networks
T2  - IET telecommunications series
SN  - 178561164X
U1  - 621.382 
KW  - Telecommunication systems
KW  - Telecommunication
N1  - Includes bibliographical references and index; An introduction to telephony -- The many networks and how they link -- Network components -- Transmission systems --  Transmission networks -- Circuit-switching systems and networks -- Signalling and control -- Data (packet) switching and routeing -- Mobile systems and networks -- Numbering and addressing -- Putting it all together
ER  -