00409nam a2200133Ia 4500008004100000024004500041082001900086100004400105245001800149260002600167600003200193650003300225999001700258260210s9999    xx            000 0 und d  a02A-39-CE, 01A-38-CE & 02A-69-CE  a621.385072 AZE  aSara Azeem, Rahat Zehra & Talat Naz 0aIP Based PABX  aKarachi:bUITU,c2003  aComputer System Engineering  aBachelor of Engineering (BE)  c32708d32708