000			00535nam a2200193Ia 4500
005			20190915171557.0
008			170527s2016||||xx |||||||||||||| ||und||
020			_a9780070603233
041			_aeng
082			_a006.454 C692c2
100			_aCollins, Daniel
245		0	_aCarrier grade voice over IP _cDaniel Collins
250			_a2nd ed.
260			_aNew Delhi _bTata McGraw-Hill Publishing Company Limited _c2003
300			_axviii, 522p.
650			_aInternet telephony
650			_aDigital telephone systems
942			_cBK
999			_c3704 _d3704