Dang, Luan. <br/><br/>
Practical voip usinf VOCAL / 
Luan Dang, Cullen Jennings and David Kelly. 
 - Mumbai :  SPD,  2002. 
 - xvii, 502 p. 
<br/><br/><label>ISBN: </label>8173664390 :  KES 3,200 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony.
<br/><br/><label>LC Class. No.: </label>TK5105.8865  / .D36