00415    a2200109   4500082001000000100002300010245005100033260008200084300003200166500005000198856005700248  aBIT-2  aRehan Haider Zaidi  aComputer based pabx systemcRehan Haider Zaidi  a Isalamabad;bNUST School of Electrical Engineering & Computer Science,c2005  axi, 63 p. :bill. ;c27 cm.  aSupervisors : Mr. Tauqeer, Mr. Nasir Mahmood.  uhttp://10.250.8.41:8080/xmlui/handle/123456789/29269