The Grandstream Networks HT818 VoIP Telephone Adapter is a versatile router specifically designed for enterprise networking needs. This 8 phone line adapter features Power Over Ethernet (PoE) capabilities, making it convenient for businesses to power their IP PBX system through the Ethernet connection. With both DSL/Phone (RJ-11) and Ethernet (RJ-45) interfaces, this black model (GS-HT818) from Grandstream offers a reliable and efficient solution for integrating VoIP technology into a business's communication infrastructure.