Picher, Michael W. <br/><br/>
Building enterprise ready telephony systems with sipXecs 4.0  leveraging open source VoIP for a rock-solid communications system /  [electronic resource] : 
Michael W. Picher. 
 - Birmingham, U.K. :  Packt Publishing,  2009. 
 - vi, 298 p. :  ill. 
 - From technologies to solutions .
 - From technologies to solutions. .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9781847196811 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet telephony.<br/>Telephone systems.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Electronic books.
<br/><br/><label>LC Class. No.: </label>TK5105.8865  / .P53 2009