Voice over IP :  systems and solutions / 
edited by Richard Swale. 
 - xiv, 484p. :  illustrations ;  24 cm. 
 - BT communications technology series ;  v.3 .
<br/><br/><label>ISBN: </label>0852960247 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony.
<br/><br/><label>LC Class. No.: </label>TK5105.8865   / .V65 2001