Baudcom’s Gigabit Ethernet to STM-4 converter comply with ITU-T related international communication standard. Baudcom’s GE/STM-4 EOS converter can work by pairs (two units are all from BAUDCOM) or work with other vender’s EoSDH device. For mostly application,Baudcom’s gigabit to STM4 converter can be compatible with other vender’s SDH device. Baudcom's Gigabit ethernet to STM1 EOS converter have successfully worked with many company's SDH device,for example,Alcatel-lucent,Huawei,ZTE (zhongxing),UT STARCOM，TATA etc.