000			00427nam a2200145Ia 4500
008			241226s9999 xx 000 0 und d
020			_a81-7808-285-3
082			_a006.7 _bDOU
100			_aDouskalis, B
245		0	_aIp telephony the integration of robust voip services
260			_aNew Delhi : _bPearson Publication , _c2001.
300			_axxi,331
365			_a250
650			_aComputer EngineeringInformation Technology
999			_c134147 _d134147