Bates, Regis <br/><br/>
Principles of voice & data communications / 
 Principles of voice and data communications 
Regis J. Bates, Marcus Bates 
 - Boston :  McGraw-Hill Irwin,  2007 
 - xxviii, 782 p. :  ill. ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0072257326 (pbk.) 9780072257328 (pbk.) 9780071257671 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication