TY  - BOOK
AU  - Qasim M. Khalil & Junaid Saleem
TI  - Implementing Open Source PBX Using Asterisk
U1  - 004.67072 QAS 
PY  - 2003///
CY  - Karachi
PB  - UIT
KW  - Computer Science
KW  - Bachelor of Computer Science (BS)
ER  -