Qasim m. Khalil & Junaid Saleem <br/><br/>
Implementing Open source PBX Using Asterisk 

 - Karachi:  UIT,  2003 
<br/><br/><label>Standard No.: </label>03A-BS-20 & 03A-BS-06 
<br/><br/><label>Subjects--Personal Names: </label><br/>Computer Science
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bachelor of Computer Science (BS)