00402nam a22001577a 4500 OSt 20240221113751.0 190515b xxu||||| |||| 00| 0 eng d 9788120350830 IIMT UNIVERSITY VISWANTHEM .T Telecommunication Switching Systems and Networks NEW DELHI PHI PUB 2005 583 ddc 02 2005 47739 47739 0 0 ddc 0 0 01 01 2019-05-15 UBS 250.00 36 0 01-B-42517 2019-05-15 2019-05-15 02