TY  - BOOK
AU  - Naqvi, Syed Kashif Abbas
AU  - Dr. M. Tahir Zaidi
TI  - Performance Analysis of IP based PBX
U1  - 621.3 
PY  - 2017///
CY  - Islamabad
PB  - CEME - NUST
KW  - Electrical Engineering-MS-Thesis
ER  -