Black, Uyless.  <br/><br/>
Internet Telephony :   Call Processing Protocols /  
Black Uyless. 
 - Upper Saddle River, NJ :   Prentice Hall  PTR,   2001. 
 - XIX, 373 s.:   il.;   24 cm. 
<br/><br/><label>ISBN: </label>0130255653