TY  - BOOK
AU  - Bates,Regis J.
AU  - Gregory,Donald
TI  - Voice & data communications handbook 
SN  - 9780072263350 
AV  - TK5105 .B395 2007
U1  - 004.6 22
PY  - 2007///
CY  - Emeryville, Calif., London
PB  - McGraw-Hill/Osborne, McGraw-Hill [distributor]
KW  - Telecommunication systems
N1  - Previous ed.: 2001
ER  -