000			00358nam a2200157Ia 4500
008			230913s9999 xx 000 0 und d
082			_a621.385 BEL
100			_aBellamy, John C.
245		0	_aDigital Telephony
250			_aIII
260			_aNEW DELHI
260			_bWILEY
260			_c2011
300			_axxv,643
650			_aElectronics Engineering
999			_c135025 _d135025