Lovell, David. , <br/><br/>
Cisco IP telephony / 
David Lovell. 
 - xxv, 600 pages :  illustrations ;  24 cm. 
<br/><br/><label>ISBN: </label>1587050501 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony.
<br/><br/><label>LC Class. No.: </label>TK5105.8865   / .L68 2002