Camarillo, Gonzalo. , <br/><br/>
SIP demystified / 
Gonzalo Camarillo. 
<br/><br/><label>ISBN: </label>0071373403 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer network protocols.
<br/><br/><label>LC Class. No.: </label>TK5105.55   / .C35 2002