Deploying Cisco voice over IP solutions  
edited by Jonathan Davidson and Tina Fox ; contributing authors, Phil Bailey ... [et al.]. 
 - Indianapolis, IN :  Cisco Press,  c2002. 
 - xxiii, 579 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>1587050307 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony.
<br/><br/><label>Dewey Class. No.: </label>004.6