Kaza, Ramesh  <br/><br/>
Cisco IP Telephony: Planning, Design, Implementation, Operation, and Optimization 

 - FIRST 
 - USA  Cisco Press  
 - 648P 
<br/><br/><label>ISBN: </label>9781587051579 
<br/><br/><label>Dewey Class. No.: </label>621.38501.KAZ