Colman Carpenter-David Duffett-Ian Plain <br/><br/>
Asterisk 1.4: The Professionals Guide 

 -  Packt Publishing  2009 
 - From Technologies to Solutions .
<br/><br/><label>ISBN: </label>9781847194381 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Email Servers<br/> System Administration <br/>COMPUTERS <br/>Internet telephony--Handbooks, manuals, etc.