Voice Over IP Fundamentals / 

 - 2nd ed. 
 - 1 volume (XXIV-394 pages) :  illustrations ;  24 cm 
 - Cisco Press fundamentals series .
 - Cisco Press fundamentals series. .
<br/><br/><label>ISBN: </label>9781587052576 1587052571 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony.<br/>Computer network protocols.
<br/><br/><label>Dewey Class. No.: </label>004.695