TY  - BOOK
AU  - Bates,Regis J.
AU  - Bates,Marcus
TI  - Principles of voice and data communications / 
SN  - 0072257326
U1  - 621.382 
PY  - 2007///
CY  - Boston
PB  - McGraw-Hill, 
KW  - Engineering
KW  - Communications engineering
KW  - Communication equipment
KW  - Internet
N1  - Includes index
ER  -