Kaza, Ramesh.  <br/><br/>
Cisco IP Telephony :   Planning, Design, Implementation, Operation and Optimization /  
Kaza Ramesh, Asadullah Salman. 
 - Indianapolis, IN :   Cisco Press,   2005. 
 - XXIII, 648 s.:   il.;   24 cm. 
<br/><br/><label>ISBN: </label>1587051575