TY  - BOOK
AU  - Shepard, Steven
TI  - Sonet/Sdh Demystified 
SN  - 0071376186
U1  - 621.38275 
PY  - 2001///
CY  - New York : 
PB  - McGraw-Hill, 
KW  - Optical Communications
KW  - Sonet Data Transmission
KW  - Synchronous Digital Hierarchy Data Transmission
N1  - NY
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/0-07-137618-6.pdf
ER  -