Sara Azeem, Rahat Zehra & Talat Naz <br/><br/>
IP Based PABX 

 - Karachi:  UIT,  2002 
<br/><br/><label>Subjects--Personal Names: </label><br/>Computer System Engineering
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bachelor of Engineering (BE)
<br/><br/><label>Dewey Class. No.: </label>621.385072 AZE