00509nam a2200181Ia 4500 230718s9999 xx 000 0 und d 9788126564385 eng 004.62 HER Hersent O. 149630 IP Telephony Deploying VoIP Protocols And IMS Infrastructure 2nd ed. 2017 Wiley 439 Rs. 699.00 Hersent O. 149630 O:0374109-Feb-2017B:SE/SI/364609-Jan-2017 ETC 188.73 344321 344321 0 0 0 0 CCEP CCEP 2017-02-14 Suyog Enterprises ETC 510.27 SE/SI/3646 0 004.62 CCEP-BK-55528 2023-07-18 00:00:00 188.73 699.00 2017-01-09 BK 055528