Voice over IP : Systems and solutions  
/ edited by Richard Swale. 
 - London :  The institution of electrical engineers,  c2001 
 - xviii, 484 p. :  il. ;  25 cm 
 - ( BT exact communications technology series 3 ). .
<br/><br/><br/>Texto en inglés 
<br/><br/><label>ISBN: </label>0852960247   B/15.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CANALES DE COMUNICACION TELEFONICA.<br/>INTERNET.
<br/><br/><label>Dewey Class. No.: </label>004.6  / V87