Ciena B-720-0020-031 is a four-channel DWDM module assembly (CN-100-A4H) designed for the CN-4200 family of optical transport equipment. It provides four DWDM channels with 100 GHz spacing and uses OM65XX Photonics components. The CN-4200 catalog lists this item as a CN-100-A4H 4-CH 100 GHz DWDM module assembly (B-720-0020-031).
