@incollection{Iseki11,
author = {Moo Wan Kim and Fumikazu Iseki},
title = {VoIP System for Enterprise Network},
booktitle = {VoIP Technologies},
publisher = {IntechOpen},
address = {Rijeka},
year = {2011},
editor = {Shigeru Kashihara},
chapter = {6},
doi = {10.5772/14405},
url = {https://doi.org/10.5772/14405}
}