C-Data
https://www.cdatatec.com/products/hybrid-fiber-coaxial/
DIFFERENCE BETWEEN THE UPSTREAM AND DOWNSTREAM IN HFC NETWORKS
Downstream refers to data and signals transmitted from the service provider's network to the end-user, while upstream refers to data and signals transmitted from the end-user back to the service provider's network. Downstream typically has higher bandwidth than upstream in HFC networks.
C-Data's product portfolio includes a wide range of offerings such as ONU OTT, OLT, HFC, Wireless Access, Switches, OTN, Cloud Platforms, and Smart Software Systems.