Wittenberg, Nicholas <br/><br/>
Understanding Voice Over IP Technology 

 - 1st 
 - New York  Cengage  2009 
 - vii,387p. 
<br/><br/><label>ISBN: </label> RS 2608.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer Science
<br/><br/><label>Dewey Class. No.: </label>004 WHI