Network layers are analyzed for their design and issues of researches, while dense wavelength division multiplexing equipment has been deployed in networks of major telecommunications carriers for a long time, the efficiency of networking and relation with network control and management have not caught up to those of digital cross-connect systems and packet-switched counterparts in higher layer networks.
@article{arxiv.1404.1743,
title = {Analysis, Review and Optimization of SONET/SDH Technology for today and future aspects},
author = {Gourav Verma and Deepika Ramaiya},
journal= {arXiv preprint arXiv:1404.1743},
year = {2014}
}