1. http://www.zisacom.com.cn/en/index.asp
http://www.bridgecommunication.co.kr/
http://www.fibridge.com/eng/index.htm
http://www.occamnetworks.com/
http://www.iptran.com.tw/
http://www.opnet.com.tw/eng/application02.html
http://www.iskratel.com/
http://www.valiantcom.com/
http://www.versatek.com/about/aboutus.htm
http://www.zhone.com/products/dslam/

2. http://www.teledata-networks.com/site/en/teledata.asp?pi=24
http://www.sipura.com/ for ATAs
http://www.raisecom-international.com/
http://www.utstar.com/Solutions/Broadband/Hardened_DSLAM/